Answer: 9/4
Step-by-step explanation:
Reciprocal means flip the fraction
The reciprocal of 4/9 is 9/4
Answer: the rciprocal is 9/4
Step-by-step explanation:
A colony of Escherichia coli is inoculated from a Petri dish into a test tube containing 50 of nutrient broth. The test tube is placed in a 37 deg * C incubator and agitator. After one hour, the number of bacteria in the test tube is determined to be 8 * 10 ^ 6 Given that the doubling time of Escherichia coli is 20 minutes with agitation at 37 deg * C approximately how many bacteria should the test tube contain after eight hours of growth?
Using exponential growth formula, the number of bacteria in test tube after 8 hours is 167,772,160
How many bacteria should the test tube contain after eight hours of growth?To calculate the approximate number of bacteria after eight hours of growth, we need to determine the number of doubling cycles that occur during that time and apply the exponential growth formula.
Given:
Initial number of bacteria (N₀) = 50 (given as the inoculum)
Doubling time (t) = 20 minutes
Let's first calculate the number of doubling cycles that occur in eight hours (480 minutes):
Number of doubling cycles = (8 hours * 60 minutes per hour) / 20 minutes
Number of doubling cycles = 24 cycles
Now, we can apply the exponential growth formula to calculate the final number of bacteria (N) after eight hours:
N = N₀ * (2 exp (number of doubling cycles))
N = 50 * 2²⁴
Using a calculator or computational tool, we can evaluate this expression:
N ≈ 1.6777216 * 10^8
Therefore, after eight hours of growth, the test tube should contain approximately 167,772,160 bacteria.
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Suppose there is a simple index of two stocks, stock A and stock B. Stock A opens on Monday with 5000 shares at $2.75 per share. Stock B opens on Monday with 3000 shares at $4.30 per share. Stock A opens on Tuesday at $3.10 per share, and stock B opens on Tuesday at $4.85 per share. Both stocks have the same number of shares that they opened with on Monday. What is the rate of change of this simple index over 1 day?
The rate of change of the simple index over one day is approximately 12.78%.
To calculate the rate of change of the simple index over one day, we need to determine the percent change in the total value of the index between Monday's opening and Tuesday's opening.
On Monday, Stock A has 5000 shares at $2.75 per share, so its total value is:
Total value of Stock A on Monday = 5000 * $2.75 = $13,750
Similarly, on Monday, Stock B has 3000 shares at $4.30 per share, so its total value is:
Total value of Stock B on Monday = 3000 * $4.30 = $12,900
The total value of the index on Monday is the sum of the values of Stock A and Stock B:
Total value of the index on Monday = $13,750 + $12,900 = $26,650
On Tuesday, Stock A opens at $3.10 per share, and Stock B opens at $4.85 per share. Both stocks still have the same number of shares as on Monday.
The total value of Stock A on Tuesday is:
Total value of Stock A on Tuesday = 5000 * $3.10 = $15,500
The total value of Stock B on Tuesday is:
Total value of Stock B on Tuesday = 3000 * $4.85 = $14,550
The total value of the index on Tuesday is the sum of the values of Stock A and Stock B:
Total value of the index on Tuesday = $15,500 + $14,550 = $30,050
To calculate the percent change in the index, we use the formula:
Percent Change = ((New Value - Old Value) / Old Value) * 100
Percent Change = (($30,050 - $26,650) / $26,650) * 100 ≈ 12.78%
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In the figure shown, 1 and 2 are _____.
vertical angles
complementary angles
supplementary angles
right angles
In the figure shown, 1 and 2 are; supplementary angles.
How to identify supplementary angles?According to geometry in mathematics, we know very well that the sum of angles on a straight line is 180 degrees. We also know that two angle s are said to be supplementary angles when they sum up to 180 degrees.
Now, from the given image, we know that angle 1 and angle 2 form a straight line and as such they sum up to 180 degrees
This then tells us that they are both supplementary angles.
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y=4x+8
x=2y+19
Using the systems of equations above, what is the value of xy?
A)60
B)39
C)-39
D)No solution
The given system of equations does not have a specific value for xy. Therefore, the answer is D) No solution.
To find the value of xy using the given system of equations, we can substitute the value of x from the second equation into the first equation. Let's solve the system step by step:
Given equations:
Y = 4x + 8
x = 2y + 19
First, we substitute the value of x from equation 2) into equation 1):
Y = 4(2y + 19) + 8
Simplifying the expression:
Y = 8y + 76 + 8
Y = 8y + 84
Now, we have a single equation in terms of Y. To solve for Y, we need to eliminate the variable y. Since we know x = 2y + 19, we can substitute this value into the equation above:
Y = 8(2y + 19) + 84
Y = 16y + 152 + 84
Y = 16y + 236
Now, we have an equation in terms of Y only. Since we are asked to find the value of xy, we substitute Y back into equation 2) to solve for x:
x = 2(16y + 236) + 19
x = 32y + 472 + 19
x = 32y + 491
Now, we have equations for x and Y in terms of y. To find the value of xy, we substitute these expressions back into the equation xy:
xy = (32y + 491) * (8y + 84)
xy = 256y^2 + 3664y + 41144
As you can see, the expression for xy is a quadratic equation in terms of y. It does not simplify to a constant value. Therefore, the answer is D) No solution.
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cómo representar el 2010 en número maya
According to the information we can infer that in the Mayan numeral system, the year 2010 is represented as follows: snail, point, snail, point, point, point, point, point
How to represent 2010 in Mayan numbers?The number 2010 is broken down into Mayan units, using the symbols corresponding to the different positional values. In the Maya system, three main symbols are used:
The point The bar The snail (or shell)To represent the number 2010 in Maya, the combination of these symbols is used as follows:
Two shells represent the value of 2000. One point represents the value of 10. So, the representation of the year 2010 in Mayan numbers would be:
snail, point
Remember that the Mayan number system is positional, similar to the decimal system, so the value and position of each symbol are important to determine the complete number.
Note: The question in English is: How to represent 2010 in Mayan numbers?
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NO LINKS!! URGENT HELP PLEASE!!
(the 4th shape is another rectangle without any design)
Answer:
a. A polygon with 4 equal sides is called a rhombus.
b. A polygon with 4 right angles is called a rectangle.
c. A polygon with opposite sides parallel is called a parallelogram.
d. A rectangle without any design is called a quadrilateral.
A rhombus is a quadrilateral with four congruent sides. The opposite angles of a rhombus are congruent, and the opposite sides are parallel. A rhombus is a special type of parallelogram.A rectangle is a quadrilateral with four right angles. The opposite sides of a rectangle are parallel, and the opposite angles are congruent. A rectangle is a special type of parallelogram.A parallelogram is a quadrilateral with two pairs of parallel sides. The opposite angles of a parallelogram are congruent.A quadrilateral is a polygon with four sides and four angles. It can be any shape, as long as it has four sides and four angles.Note: It may be different in these cases.
Answer:
Rhombus
Rectangle
Parallelogram
Quadrilateral
Step-by-step explanation:
A quadrilateral is a polygon with four sides and four vertices. It is a closed two-dimensional figure formed by connecting four line segments. The interior angles of a quadrilateral add up to 360 degrees. Quadrilaterals can have various shapes and properties depending on the lengths of their sides and the angles between them. Examples of quadrilaterals include squares, rectangles, parallelograms, trapezoids, rhombuses, and kites.
The first shape has identical tick marks on each side, meaning that each side is equal in length. It does not have any interior angles marked, or any indication if any sides are parallel. Therefore, it is a rhombus.
All interior angles of the second shape are right angles. This means that adjacent sides are perpendicular, and therefore opposite sides are parallel. It does not have any indication of the lengths of the sides. Therefore, it is a rectangle.
The third shape has two sets of arrows on opposite sides, meaning that each pair of opposite sides is parallel. It does not have any interior angles marked. It does not have indication of the lengths of the sides, however, as the opposite sides are parallel, this means that the opposite sides will be equal in length. Therefore, it is a parallelogram.
The fourth shape does not have any markings to indicate the length of its sides, the measure of its interior angles, or if any sides are parallel. Therefore, it is a quadrilateral.
NO LINKS!! URGENT HELP PLEASE!!
Answer:
Step-by-step explanation:
1)
Congruency shortcuts:
HL, SSS, SAS, ASA, and AAS
where S=side
A=angle
H=hypotenule
L=leg
HL is only for a right triangle
If you can prove sides and angles are congruent according to those 5 rules, you have proven the triangles are congruent
Similarity shortcuts:
AA, SAS, SSS
We have triangle similarity if (1) two pairs of angles are congruent (AA) (2) two pairs of sides are proportional and the included angles are congruent (SAS), or (3) if three pairs of sides are proportional (SSS)
2)
BG ≅ GD >Given from image
IG ≅ GO >Given from image
<BGI ≅ <DGO >Vertical Angles
ΔBGI ≅ ΔDGO >SAS
You have proven that the triangles are congruent because you used the shortcut by proving a side and angle and a side are congruent so SAS makes them congruent
Which shows one way to determine the factors of x3 - 12x7 - 2x + 24 by grouping?
The factored form of the polynomial x^3 - 12x^2 - 2x + 24 by grouping is (x - 12)(x^2 - 2).
To determine the factors of the polynomial x^3 - 12x^2 - 2x + 24 by grouping, we can follow these steps:
Step 1: Group the terms in pairs. In this case, we can pair the first two terms and the last two terms:
(x^3 - 12x^2) + (-2x + 24)
Step 2: Factor out the greatest common factor from each pair. From the first pair, we can factor out x^2, and from the second pair, we can factor out -2:
x^2(x - 12) - 2(x - 12)
Step 3: Notice that we now have a common binomial factor of (x - 12) in both terms. Factor out this common binomial factor:
(x - 12)(x^2 - 2)
Therefore, the factored form of the polynomial x^3 - 12x^2 - 2x + 24 by grouping is (x - 12)(x^2 - 2).
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Look for Relationships Does increasing the
3 to 6 change the mode? If so, how?
Increasing the value from 3 to 6 can potentially change the mode of a dataset. The mode represents the most frequently occurring value(s) in a dataset. If there are no repeated values or if the repeated values remain the same, then increasing the value from 3 to 6 will not change the mode. If there are new values introduced or if the frequency of certain values changes as a result of increasing the value, then the mode may indeed change.
1. Identify the initial dataset: Take note of the dataset where the mode is currently determined based on a value of 3.
2. Determine the mode: Calculate the mode of the dataset when the value is 3. The mode represents the most frequently occurring value(s) in the dataset.
3. Increase the value to 6: Modify the dataset by increasing the value from 3 to 6.
4. Analyze the dataset: Examine the modified dataset to observe any changes in the frequency distribution of values.
5. Compare the modes: Calculate the mode of the modified dataset with the value of 6 and compare it to the initial mode.
6. Assess changes: If the mode remains the same, it implies that the most frequently occurring value(s) in the dataset did not change. However, if the mode differs from the initial mode, it indicates that the increase from 3 to 6 has affected the frequency distribution and altered the most frequently occurring value(s).
7. Determine the impact: Analyze the specific changes in the dataset that led to the mode alteration. Identify any newly introduced values or shifts in the frequency of existing values.
8. Conclude: Based on the comparison of the initial mode and the mode with the increased value, determine whether increasing from 3 to 6 has changed the mode and describe the nature of the change.
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Enter the number that belongs in the green box 7 4 8
Answer:
61.03°
Step-by-step explanation:
You want the angle opposite the side of length 7 in the triangle with other sides of lengths 4 and 8.
Law of CosinesThe law of cosines relates the angles of a triangle to the side lengths. For triangle ABC with opposite sides a, b, c, the relation is ...
c² = a² +b² -2ab·cos(C)
ApplicationSolving for angle C, we have ...
cos(C) = (a² +b² -c²)/(2ab)
C = arccos((a² +b² -c²)/(2ab))
In this triangle, that means ...
C = arccos((4² +8² -7²)/(2·4·8)) = arccos(31/64)
C ≈ 61.03°
The angle of interest is about 61.03°.
__
Additional comment
We get the same result from a triangle solver. See the second attachment. (The angle we want is angle B in that attachment.)
<95141404393>
Suppose d ( b ) is 2 times as large as n ( b ) , where b is some fixed number. What is the value of f ( b ) ?
The answer is that the value of f(b) is 4 Times as large as n(b).
Given that d(b) is 2 times as large as n(b) where b is some fixed number, we can express it as:d(b) = 2n(b)Now we are required to find the value of f(b). As f(b) is defined as f(b) = d(b) + 2n(b),
we can substitute the value of d(b) in the expression to obtain:
f(b) = 2n(b) + 2n(b) = 4n(b)
Therefore, the value of f(b) is 4 times as large as n(b).
We can also obtain this result by substituting the value of d(b) = 2n(b) in the expression f(b) = d(b) + 2n(b) to get:f(b) = 2n(b) + 2n(b) = 4n(b)
Therefore, the value of f(b) is 4 times as large as n(b).
Hence, the answer is that the value of f(b) is 4 times as large as n(b).
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NO LINKS!! URGENT HELP PLEASE!!
Answer:
a. My quadrilateral has four equal sides.
Must be: Rhombus.
Could be: Square.
b. My quadrilateral has two sets of parallel sides.
Must be: Parallelogram.
Could be: Rectangle, Rhombus, Square
c. My quadrilateral has four right angles.
Must be: Rectangle.
Could be: Square.
Explanation:
a. A quadrilateral with four equal sides must be a rhombus. It could also be a square, but a square is a special type of rhombus, so a rhombus is the "must be" shape.b. A quadrilateral with two sets of parallel sides must be a parallelogram. It could also be a rectangle, a rhombus, or a square. However, a rectangle, rhombus, or square is also a parallelogram, so a parallelogram is the "must be" shape.
c. A quadrilateral with four right angles must be a rectangle. It could also be a square, but a square is a special type of rectangle, so a rectangle is the "must be" shape.
Answer:
a) Must be a rhombus.
Could be a square, a rectangle, a parallelogram, a trapezoid, or a kite.
b) Must be a parallelogram.
Could be a square, a rectangle, a kite, or a rhombus.
c) Must be a rectangle.
Could be a square, a kite, a rhombus or a parallelogram.
Step-by-step explanation:
The six basic types of quadrilaterals are:
Square: All interior angles are 90°. Side lengths are equal.Rectangle: All interior angles are 90°. Opposite sides lengths are equal.Rhombus: Side lengths are equal.Trapezoid: One pair of parallel sides.Parallelogram: Opposite sides are parallel.Kite: Two pairs of equal length sides (these sides are adjacent to each other).a) "My quadrilateral has four equal sides"A quadrilateral by definition is a four-sided shape. Therefore, it is possible for all types of quadrilateral to have four equal sides. However, for it to be a square and a rhombus, it must have four equal sides.
The interior angles of a square are all right angles, and its opposite sides are parallel. So as we haven't been told anything about the interior angles of the quadrilateral, or if any of its sides are parallel, we can conclude that:
The quadrilateral must be a rhombus.The quadrilateral could be a square, a rectangle, a parallelogram, a trapezoid, or a kite.b) "My quadrilateral has two sets of parallel sides"The types of quadrilateral that can have two sets of parallel sides are square, rectangle, rhombus, parallelogram and kite (all squares are kites).
The interior angles of a square and a rectangle are 90°.
The side lengths of a rhombus are congruent.
As we haven't been told anything about the interior angles or the side lengths of the quadrilateral, we can conclude that:
The quadrilateral must be a parallelogram.The quadrilateral could be a square, a rectangle, a kite, or a rhombus.c) "My quadrilateral has four right angles"All quadrilaterals, apart from a trapezium, can have interior angles that are all right angles. However, for a quadrilateral to be a square or a rectangle, it must have interior angles that are right angles.
As we don't know if the side lengths of the quadrilateral are equal, we cannot know if it's a square. Therefore, we can conclude that:
The quadrilateral must be a rectangle.The quadrilateral could be a square, a kite, a rhombus or a parallelogram.NO LINKS! URGENT HELP PLEASE!
Solve for the missing variables
Answer:
x ≈ 21.8
Step-by-step explanation:
You want the side length opposite the 98° angle in a triangle with side length 10 between that angle and one marked 55°.
Law of SinesThe law of sines can be used when angles are known and at least one side is known. The unknown angle is found by using the fact that the sum of angles is 180°.
angle opposite 10 = 180° -98° -55° = 27°
The law of sines tells you ...
a/sin(A) = b/sin(B)
x/sin(98°) = 10/sin(27°)
x = 10(sin(98°)/sin(27°)) ≈ 21.8
The value of x is about 21.8 units.
<95141404393>
find m angle B round to mearest degree
The measure of angle B is 64. 2 degrees
How to determine the angleTo determine the measure of the angle, we have the different trigonometric identities.
We have that;
sinecosinetangentcotangentsecantcosecantFrom the information given, we have that;
Using the sine identity, we have;
sin θ = opposite/hypotenuse
Substitute the values, we have;
sin B = 18/20
Divide the values, we have;
sin B = 0.900
Find the inverse value of sine, we have;
B = 64. 2 degrees
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write an inverse variation equation that relates x and y if y= 6 when x= -3 then find y when x= -9
Answer: 2
Step-by-step explanation:
Function inversely proportional:
y = k/x
Solve for k from the point they gave you on the line y=6 and x=-3
6 = k/(-3) >multiply -3 to both sides
-18 = k >This is your k value
y = -18/x >This is your generic equation of the line
Now they want to know what is y when x= -9
y= -18 / -9
y = 2
Solve the system of linear equations.
-7x – 2y = -13
x – 2y = 11
Question 18 options:
(-2, -1)
(3, -4)
(-9, 6)
(5, 12)
Answer:
+9xy =-13
no
so the answer is c
bro what is the answer is also can say they c optio thanks for point
solve for x and y in the equation shown
Answer:
x = 13 and y = (7 - 3x) / (-2)
Step-by-step explanation:
Solving for X
The given equation is:
3x - 7 = 2x + 6
To solve for x, we can simplify and rearrange the equation as follows:
3x - 2x = 6 + 7 (subtracting 2x and adding 7 to both sides)
x = 13 (combining like terms)
Therefore, the solution to the given equation is x = 13.
Thus, the correct answer is 13.
The given equation is:
3x - 2y = 7
solving for y
To solve for y, we need to isolate y on one side of the equation.
First, we can subtract 3x from both sides of the equation:
3x - 3x - 2y = 7 - 3x
Simplifying, we get:
-2y = 7 - 3x
Next, we can divide both sides by -2 to get y by itself:
y = (7 - 3x) / (-2)
Therefore, the solution for y is y = (7 - 3x) / (-2).
Thus, the above is the solution for y.
1. Identify two like terms and say how they are related.
(1) 6x + 4y = -258 (2) -3x + 5y = 45
2. Use the substitution method to solve this linear system:
(1) 8x + y = -458 (2) -5x + 3y = 221
(4x + 2y = -6)/(-3x -2y = 7)
What is the y-intercept of f(x) = (1/2)^x?
The y-intercept of [tex]f(x) = (1/2)^x[/tex] is option d D. (0, 1)
To find the y-intercept of a function, we need to evaluate the function when x = 0. In the given function f(x) = (1/2)^x, we substitute x = 0 and calculate the corresponding y-value.
f(0) = [tex](1/2)^0[/tex] = 1
Therefore, the y-intercept of the function is the point (0, 1). This means that when x is 0, the function has a y-value of 1.
The y-intercept represents the point where the function intersects the y-axis, which corresponds to the value of the function when x is 0. In this case, as x approaches 0, the value of [tex](1/2)^x[/tex] approaches 1. This is because any number raised to the power of 0 is equal to 1.
Option D. (0, 1) correctly represents the y-intercept of the function f(x) = [tex](1/2)^x[/tex]. The point (0, 1) indicates that when no units of the base (1/2) are multiplied together, the result is 1.
The other options (A. (0, 0), B. (1, 1/2), and C. (1, 0)) do not correctly represent the y-intercept because they either have incorrect y-values or are not on the y-axis (x ≠ 0). The y-intercept specifically refers to the point where the function crosses the y-axis, which occurs when x = 0.
The complete question is:
What is the y-intercept of[tex]f(x) = (1/2)^x[/tex]?
A. (0, 0)
B. (1, 1/2)
C. (1, 0)
D. (0, 1)
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lan pays a semiannual of $400 for automobile insurance a monthly premium of $170 for health insurance and an annual premnium of $500 for life insurance
The corresponding monthly expense for the given expenses is approximately $278.34.
What is monthly insurance?We have from the question that;
Monthly automobile insurance expense = $400 / 6 = $66.67
Monthly health insurance expense = $170
Monthly life insurance expense = $500 / 12 = $41.67
Total monthly expense = Monthly automobile insurance expense + Monthly health insurance expense + Monthly life insurance expense
Total monthly expense = $66.67 + $170 + $41.67
Total monthly expense = $278.34
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Question 1 1. Weight Loss X runs a number of weight reduction centers within a large city. From the historical data it was found that the weight of the participants is normally distributed with a mean of 175 lbs and a standard deviation of 35 lbs. Calculate the standard error of the average sample weight when 15 participants are randomly selected for the sample? Enter your answer rounded to two decimal places. For example, if your answer is 12.345 then enter as 12.35 in the answer box. 9.05 Question 2 5 pts Question 3 5 pts 2. Continuing with problem 1. calculate the probability that the average sample weight is greater than 185 lbs when 15 participants are randomly selected for the sample? Enter your answer rounded to two decimal places. Do not enter % in the answer box. For example, if your answer is 0.12345 or 12.345% then enter as 12.35 in the answer box. 5 pts
Q1. The standard error of the average sample weight when 15 participants are randomly selected for the sample is approximately 9.05 lbs.
Q2. the probability that the average sample weight is greater than 185 lbs when 15 participants are randomly selected for the sample is approximately 0.8643, or 86.43%
Question 1:
To calculate the standard error of the average sample weight, we can use the formula:
Standard Error = Standard Deviation / √(Sample Size)
In this case, the standard deviation is given as 35 lbs and the sample size is 15 participants. Plugging in these values into the formula, we get:
Standard Error = 35 / √(15) ≈ 9.05 (rounded to two decimal places)
Therefore, the standard error of the average sample weight when 15 participants are randomly selected for the sample is approximately 9.05 lbs.
Question 2:
To calculate the probability that the average sample weight is greater than 185 lbs, we need to standardize the average sample weight using the standard error.
First, we calculate the z-score using the formula:
z = (Sample Mean - Population Mean) / Standard Error
The population mean is given as 175 lbs, the sample mean is 185 lbs, and the standard error is 9.05 lbs. Plugging in these values, we get:
z = (185 - 175) / 9.05 ≈ 1.10 (rounded to two decimal places)
Next, we use a standard normal distribution table or a calculator to find the probability corresponding to a z-score of 1.10. From the table, we find that the probability is approximately 0.8643.
Therefore, the probability that the average sample weight is greater than 185 lbs when 15 participants are randomly selected for the sample is approximately 0.8643, or 86.43% (rounded to two decimal places).
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The equation Y= X^2/2 - 8 and Y= 2X -2 are graphed below what are the solutions to the equation X^2/2 - 8 = 2X -2 
The equation X^2/2 - 8 = 2X - 2 has two solutions, X = 6 and X = -2. These are the values of X that satisfy the equation and make both equations Y = X^2/2 - 8 and Y = 2X - 2 intersect on the graph.
To find the solutions to the equation X^2/2 - 8 = 2X - 2, we need to set the two equations equal to each other and solve for X.
The equation is:
X^2/2 - 8 = 2X - 2
To simplify the equation, let's multiply both sides by 2 to eliminate the fraction:
X^2 - 16 = 4X - 4
Next, we rearrange the equation to have all terms on one side:
X^2 - 4X - 12 = 0
Now, we can solve this quadratic equation by factoring, completing the square, or using the quadratic formula. Let's use factoring in this case:
(X - 6)(X + 2) = 0
Setting each factor equal to zero gives us two possible solutions:
X - 6 = 0 --> X = 6
X + 2 = 0 --> X = -2
So the solutions to the equation X^2/2 - 8 = 2X - 2 are X = 6 and X = -2.
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33. Which expression below has been simplified using
the correct procedure?
A. 2 + 4(x + 2)
2 + 4x+8
4x + 10
C.
4-7(x+5)
4-7x+5
-7x+9
B. 2+5(x-7)
7(x-7)
7x-49
D. 7-3(x - 5)
7-3x-15
-3x-8
Answer:
Step-by-step explanation:
4x + 10
C.
4-7(x+5)
4-7x+5
-7x+9
B. 2+5(x-7)
7(x-7)
7x-49
D. 7-3(x - 5)
7-3x-15
-3x-8
its 1,002
What was your BAC or state if your DUI was drug related or a refusal?
If you are ever charged with a DUI, it is important to seek legal counsel and understand your rights and options for Defense.
Blood Alcohol Concentration (BAC) is a measure of the amount of alcohol present in a person's bloodstream. In most states, it is illegal to operate a motor vehicle with a BAC of 0.08% or higher. For drivers under the age of 21, the legal BAC limit is often lower, usually 0.02% or 0.01%.A DUI (driving under the influence) charge can result from operating a motor vehicle while under the influence of drugs or alcohol, with a BAC above the legal limit, or with impairing substances in the bloodstream. If a person refuses to take a chemical test (such as a breathalyzer or blood test) to determine their BAC, they may still be charged with DUI based on other evidence of impairment such as the officer's observations, field sobriety tests, or witness statements.DUI charges can have serious consequences, including fines, license suspension, and possible imprisonment. The severity of the charges and penalties may vary depending on the individual's BAC, the presence of drugs in their system, and other factors such as prior DUI convictions or injuries caused by the impaired driving.
In conclusion, it is always important to make responsible decisions when it comes to operating a motor vehicle and to avoid consuming drugs or alcohol before getting behind the wheel. If you are ever charged with a DUI, it is important to seek legal counsel and understand your rights and options for defense.
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8th graders are asked to take a survey.
73 said yes and 5 said no which in total are 78 students that answer the question.
How can you write the percentages for 73 and 5 out of 100%
73 students represent approximately 93.59% and 5 students represent approximately 6.41% out of the total of 78 students.
How to write the percentagesTo calculate the percentages for 73 and 5 out of 100%, you can use the following formulas:
Percentage = (Number of students / Total number of students) * 100%
For 73 students:
Percentage = (73 / 78) * 100% = 93.59%
For 5 students:
Percentage = (5 / 78) * 100% = 6.41%
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Looking at the table above ,
A. What would you consider as the independent variable in this situation ? Introduce the symbol/ name (x,t,...) you will use to represent this variable . Remember to include the units.
B. What is the dependent variable ? Introduce the symbol /name for this variable . Remember the units .
The independent Variable in the situation presented in the table is the temperature (T), which is measured in degrees Celsius (°C), and the dependent variable is the volume (V), which is measured in milliliters (mL).
The table above illustrates the relationship between the temperature of a substance and its volume. The independent variable is the temperature of the substance and the dependent variable is the volume of the substance.
The symbol or name used to represent the independent variable is "T" for temperature and its units are given as degrees Celsius or °C.The symbol or name used to represent the dependent variable is "V" for volume, and its units are given as milliliters or mL.
The temperature is the independent variable as it is being manipulated in the experiment while the volume is dependent on the temperature as it is changing based on the temperature.
An independent variable is a variable in an experiment that is being manipulated by the experimenter, while the dependent variable is the variable that is being measured in response to changes in the independent variable.
In summary, the independent variable in the situation presented in the table is the temperature (T), which is measured in degrees Celsius (°C), and the dependent variable is the volume (V), which is measured in milliliters (mL).
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Juana pilots a motorboat 30 miles upstream. The trip takes 5 hours. The next day it takes 3 hours to make the return trip downstream. Find the rate of the motorboat in still water and the rate of the current.
The Rate of the motorboat in still water is 8 miles per hour, and the rate of the current is 2 miles per hour.
To solve this problem, let's denote the rate of the motorboat in still water as "b" and the rate of the current as "c".
When Juana is going upstream, she is going against the current, so her effective speed is reduced. The formula for the time it takes to travel a certain distance is distance divided by speed. Therefore, for the upstream trip:
Time = Distance / (Boat's speed - Current's speed)
5 = 30 / (b - c) -- (1)
On the return trip downstream, Juana is going with the current, so her effective speed is increased. Therefore, for the downstream trip:
Time = Distance / (Boat's speed + Current's speed)
3 = 30 / (b + c) -- (2)
We now have a system of two equations with two variables. We can solve this system to find the values of "b" and "c".
First, let's solve equation (1) for (b - c):
5 = 30 / (b - c)
(b - c) = 30 / 5
(b - c) = 6 -- (3)
Next, let's solve equation (2) for (b + c):
3 = 30 / (b + c)
(b + c) = 30 / 3
(b + c) = 10 -- (4)
Now, we have two equations (3) and (4) that represent the sum and difference of (b + c) and (b - c) respectively. We can solve this system of equations to find the values of "b" and "c".
Adding equations (3) and (4), we get:
2b = 6 + 10
2b = 16
b = 8
Substituting the value of "b" back into equation (3), we get:
(8 - c) = 6
c = 8 - 6
c = 2
Therefore, the rate of the motorboat in still water is 8 miles per hour, and the rate of the current is 2 miles per hour.
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Thomas is on a road trip to San Francisco. At this point, he is already 140 miles away from his house. He continues driving at a rate of 65 miles every hour. Which equation represents the number of hours, h, it takes Thomas to be 500 miles away from his house. Based on the given information, how many hours will it take Thomas to be exactly 335 miles away from his house?
A. 1 hour
B. 2 hours
C. 3 hours
D. 4 hours
Solve by factoring 12=-7x-x^2
Answer:
C
Step-by-step explanation:
12 = - 7x - x² ( add x² to both sides )
x² + 12 = - 7x ( add 7x to both sides )
x² + 7x + 12 = 0 ← in standard form
consider the factors of the constant term (+ 12) which sum to give the coefficient of the x- term (+ 7)
the factors are + 4 and + 3 , then
(x + 4)(x + 3) = 0 ← in factored form
equate each factor to zero and solve for x
x + 4 = 0 ⇒ x = - 4
x + 3 = 0 ⇒ x = - 3
solutions are x = - 4 and x = - 3
with a = - 4 and b = - 3
then
a² + b² + a + b
= (- 4)² + (- 3)² + (- 4) + (- 3)
= 16 + 9 - 4 - 3
= 25 - 7
= 18