The numbers in which is "the sum of three numbers is 16 are 4.6875, 1.21875 and 10.09375 respectively.
How to find unknown number using algebra?Let
The first number = aThe second number = bThe third number = cTotal sum = 16c = 5b + 4
4a = 8b + 9
From the second equation
a = (8b + 9) / 4
16 = a + b + c
16 = (8b + 9) / 4 + b + (5b + 4)
16 = (8b + 9) / 4 + b + 5b + 4
16 = (8b + 9)/4 + 6b + 4
16 - 4 = (8b + 9)/4 + 6b
12 = (8b + 9 + 24b) / 4
cross product12 × 4 = 8b + 9 + 24b
48 = 32b + 9
48 - 9 = 32b
39 = 32b
b = 39/32
b = 1.21875
Recall,
c = 5b + 4
c = 5(1.21875) + 4
c = 6.09375 + 4
c = 10.09375
Also,
16 = a + b + c
16 = a + 1.21875+ 10.09375
16 = a + 11.3125
16 - 11.3125 = a
a = 4.6875
So therefore, the three numbers represented by the expression are 4.6875, 1.21875 and 10.09375 respectively.
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A $240 suit is marked down by 20%. Find the sale price.
First we have to calculate 20% of 240
Let's multiply 240 by 20/100, therefore the result is 48
Then we subtract 48 from 240, the result is 192
The answer is $192.
8. A gem expert has three gemstones.
Their masses in grams are 0.809,
0.098, and 0.890. Which mass is
the greatest?
Answer:
the last one so it would be
0.890
Step-by-step explanation:
A herd of buffalo began with a population of 125,000. The average birth rate is 31% per year, but the death rate is 37% per year.
What is the difference between the birth rate and death rate?
Is this population in a state of growth or decay?
Write an exponential equation modeling the population's change over time.
According to your model, what will the population of buffalo in this heard be in 10 years?
The difference in the birth rate and death rate of the herd of buffalo as indicated in the task content is; 6% net death rate.
The population is in a state of decay.
The exponential equation which models the population is; P = 125,000 (0.94)^n.
The population of the herd after 10 years would be; P = 67,327.
What state is the population in; Growth or decay?It follows from the task content that the average birth rate is 31% per year, but the death rate is 37% per year.
Hence, the difference between the birth rate and death rate is; 6% net death rate per year.
It therefore follows from the statement above that the population is in a state of decay as it reduces after each successive year due to.higher death rate than birth rate.
Also, since the difference between death and birth rate is a 6% net death rate.
It follows that the model is such that we have;
P = 125,000 (100% - 6%)^n
P = 125,000 (0.94)^n
where, P = current population and n = number of years after.
Finally, the population of the herd after 10 years would be;
P = 125,000 (0.94)¹⁰
P = 67,327.
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6. What value is needed to complete the square?
x² - 6x +
The most appropriate choice for expansion will be given by -
9 is needed to complete the square.
What is expansion?
Expansion is used when there is a product of factors in an algebraic expression and multiplication of algebraic expansion is needed by removing the brackets. Two most important formulas in expansion are
[tex](a+b)^2 = a^2+2ab+b^2\\(a-b)^2 = a^2-2ab + b^2[/tex]
Here,
[tex]x^2 - 6x +\\x^2 - 2\times x \times 3+[/tex]
To complete the square, [tex]3^2 = 9[/tex] is needed
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The nth term of a sequence is given by
5n - 4
What is the 8th term of this sequence?
Answer is 36
The 8th term of this sequence is 36.
solution:
A series of numbers known as a arithmetic sequence has a constant difference numbers such that the difference between the consecutive terms is constant.
The formula for nth term of an arithmetic sequence is = a + (n – 1)d
Pattern : 5nnth Term : 5n-4ie an= 5n-4
common difference : 5n= number of terms
To find 8th term : 5(n)-4
: 5(8)-4 = 36
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Write the sentence as an inequality.
1. A number n plus 7 is less than or equal to 9
2. Three times a number w is less than 18.
3. Three is less than the sum of a number s and 4
4. Four is no less than quotient of a number x and 2.1
Answer:
1. n + 7 ≤ 9
2. 3w < 18
3. 3 < s + 4
4. 4 ≥ x/2.1
What is the equation of the line that passes through the point (-7,-8) and has a slope of 0
Answer: The correct answer is y= -8
Step-by-step explanation: A line with a slope of zero is a horizontal line. In this case, the horizontal line intersects the y-axis at -8 and includes all values of x.
(-2.655)times(18.44)
-48.95820 is the result of the products of the decimal numbers (-2.655) and (18.44).
How to multiply decimal numbers?Given the data in the question;
(-2.655) multiply by (18.44)
First, we determine the total decimal places in the numbers.
We have 5.
Next, we ignore the decimal places and carry out the multiplication operation as if operating on two integers.
- 2 6 5 5
× 1 8 4 4
⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻
+ 1 0 6 2 0
+ 1 0 6 2 0
+ 2 1 2 4 0
+ 2 6 5 5
⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻
= - 4 8 9 5 8 2 0
Now, rewrite the result of the product with the 5 total decimal places.
= -48.95820
Therefore, the result of the multiplication operation is -48.95820.
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Does the ordered pair (0,3) satisfy the following system of equations?-4x+4y=20-3x+4y=15
We are given the following system of equations:
[tex]\begin{gathered} -4x+4y=20,(1) \\ -3x+4y=15,(2) \end{gathered}[/tex]we are asked to determine if the point (0, 3) is a solution of the equation. To do that, we will replace the points x = 0 and y = 3 in each of the equations to see if they are both satisfied:
Replacing in equation (1):
[tex]\begin{gathered} -4(0)+4(3)=20 \\ 0+12=20 \\ 12\ne20 \end{gathered}[/tex]Since equation (1) is not satisfied by the point this means that this is not a solution.
I AM GROUNDED FOR MY GRADE IN GEOMETRY PLEASE HELP
Answer: a = 35
Step-by-step explanation: The answer would be 35 because we already know one of the angles is 55 degrees and the other would be 90 degrees because the little square gives it away. Now, all you need to do is add 55 and 90 which would give you 145. Since the line is 180 degrees you would have to subtract 145 from 180 which would give you 35.
someone pls pls PLS help
Write the equation in both slope-intercept and standard form for each of the
scenarios below.
Check the picture below.
standard form for a linear equation means
• all coefficients must be integers, no fractions
• only the constant on the right-hand-side
• all variables on the left-hand-side, sorted
• "x" must not have a negative coefficient
well, keeping all that in mind, the equation is already in standard form.
A family eats at a restaurant. The bill is $42. The family leaves a tip and spends $49.77. How much was the tip in dollars? Round your answer to the nearest hundredth (second) decimal place. Do not include units ($) in your answer.
A family eats at a restaurant. The bill is $42. The family leaves a tip and spends $49.77. How much was the tip in dollars? Round your answer to the nearest hundredth (second) decimal place. Do not include units ($) in your answer
Subtract the bill from the total
so
49.77-42=$7.77
therefore
the answer is 7.77use the conversion 8 km/h = 5mph to convert 24m/s into mph
In the standard conversion unit, 24 m/s equals 54 mph in mph
How to convert the unit?The conversion equation is given as
8 km/h = 5 mph
Convert 8 km to meters
So, we have the following equation
8 x 1000 m/h = 5 mph
Evaluate the products
So, we have the following equation
8000 m/h = 5 mph
Convert 1 hour to seconds
So, we have the following equation
8000 m/3600 s = 5 mph
Evaluate the quotient
So, we have the following equation
20/9 m/s = 5 mph
Multiply both sides by 9/20
1 m/s = 9/20 * 5 mph
Multiply both sides by 24
24 * 1 m/s = 24 * 9/20 * 5 mph
Evaluate the products
24 m/s = 54 mph
Hence, the equivalent of 24 m/s in mph is 54 mph
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Write an inequality for the graph shown below.
Use x for your variable.
Answer:
X > -5
if the bubble were shaded in, it would be >
What are the equations for these graphs?
The absolute value functions graphed are given as follows:
1. y = |x + 1|.
3. y = |x + 1| - 4.
4. y = 0.5(|x - 1| + 1)
How to define an absolute value function?An absolute value function of vertex (h,k) is defined by the following rule:
y = |x - h| + k.
For item 1, the vertex of the function is at point (-1,0), hence h = -1 and k = 0, and the rule is:
y = |x + 1|.
For item 3, the vertex of the function is at point (-1, -4), hence the coefficients are h = -1 and k = -4, and the rule is:
y = |x + 1| - 4.
For item 4, the vertex of the function is at point (1,1), and the function is also vertically compressed by a factor of 0.5, as when x changes by 2, y changes by 1, hence the rule is:
y = 0.5(|x - 1| + 1)
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6) A package of pencils costs $1.29. How much would 13 packages
cost?
10 points
After conducting some mathematical operations, we know that the cost of 13 packages of pencils of $16.77.
What are mathematical operations?An operation is a function in mathematics that transforms zero or more input values into a clearly defined output value. The operation's arity is determined by the number of operands. A mathematical action is called an operation. Mathematical operations include addition, subtraction, multiplication, division, and finding the root.So, the cost of 13 packages of pencils:
The cost of 1 package of pencils is $1.29.Then, obtain the cost of 13 packages of pencils as follows:
13 × 1.29$16.77Therefore, after conducting some mathematical operations, we know that the cost of 13 packages of pencils of $16.77.
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Each 1/4 cup of milk has 2 grams of protein. Exactly how many grams of protein are in 3 1/2 cups of milk?
Answer:
28
Step-by-step explanation:
1 0/4 = 8
2 0/4 = 16, so 3 0/4 = 24.
2/4 = 1/2, and 2/4 has 4 grams.
24 + 4 = 28.
1) Suppose that x and y vary inversely and that x=48 when y=3.
a) Write a function that models the inverse variation.
b) Find x when y=36.
A. The function that models the inverse variation is y = 144/x
b. The value of x when y = 36 is 4
What is an inverse variation?An inverse variation simply shows the relationship between two variables whereby when one value increases, the other value will decrease
1. In this case, x and y vary inversely and that x=48 when y=3. The inverse relationship will be:
y = k/x
3 = k/48
Cross multiply
k = 48 × 3
k = 144
Therefore, y = 144/x
2. When y is 36, x will be:.
y = 144/x
36 = 144/x
Cross multiply
36x = 144
Divide
x = 144 / 36
x = 4
The value of x is 4.
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The side length, s, of a cube is 4x2 + 3. If V = s3, what is the volume of the cube?
Answer:
The side length, s, of a cube is 4x^2 + 3. If V = s^3, what is the volume of the cube? The volume of the cube is 64 x^6 + 144x^4 + 108x^2 + 27.
Step-by-step explanation:
Hope this helps you
Please help!!!
And please be accurate!!
Answer: ..
Step-by-step explanation:
Wed: 0%
Thu: 30%
Fri: 50%
Sat: 80%
Sun: 100%
I got these answers by taking 100, and subtracting the rain percentage from it. For instance, if it was a 45% to rain, and a unknown amount for it to not rain, I would take 100 and subtract 45 from it, resulting in a 55% chance of it not raining.
What’s the algebraic representation
The algebraic representation of the given figure is y = y₁ + 14, for B (x, y) and C (x ,y₁)
What is algebraic representation?A module for an associative algebra is that algebraic representation in abstract algebra. In this case, an associative algebra is a ring, which need not be unitary.
If the algebra is not unitary, it can be made to be so using a standard method (see the adjoint functors page); there is no fundamental difference between the algebraic representations and the modules for the resulting unitary ring, in which the identity acts through the identity mapping.
Point A in both triangles are same
For Point B(-2,8) and Point C(-2, -6)
we can see Point B y = Point C y+14
So the algebraic representation is Point B(x, y) = Point C (x ,y+14)
As x is same we get
y = y₁ + 14
Where y is point B y and y₁ is point C y,
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I need answer not the steps ok the question is -35x = -105 is -3
ok the answer is 3
as both are negative so they will get cancel out
[tex]\begin{gathered} x=\frac{-105}{-35}=3 \\ x=3 \end{gathered}[/tex]so the answer is 3 only.
Please help me with these.
PAGE 1
1.) 5 x 7 + 5 x 3 = 50
2.) 3 x 3 + 3 x 4 = 21
3.) 2 x 8 + 2 x 8 = 32
4.) 6 x 8 - 6 x 5 = 18
5.) -3 x 9 - (-3) x 2 = (-21)
6.) -2 x 8 - (-2) x 4 = (-8)
PAGE 2
1.) 2 x 3 + X
2.) 5 x 6 + Y
3.) 7 x 8 + Y
4.) 9 x 2 - M
5.) 15 x 3 - S
6.) -15 x 6 - A
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which is a true statement about the slopes of MO and OQ?
Answer: b
Step-by-step explanation: because if u see the numbers and they match
A store sells pounds of almonds for $2.50. You need to buy 2 pounds. How much will you pay?
Answer: It would be $5.00
I hope you have a nice day!
25. (a) During an outing, of the students carried juice, of the remainder used water and the rest soft drink. What fraction of the students used soft drink? Answer... ...(2) (b) If 8 students drank water, how many students drank soft drink?
Answer:Eureka Math Grade 6 Module 2 Lesson 1 Answer Key
March 31, 2021 / By Prasanna
Engage NY Eureka Math 6th Grade Module 2 Lesson 1 Answer Key
Eureka Math Grade 6 Module 2 Lesson 1 Example Answer Key
Example 1.
34 gallon of batter is poured equally into 2 bowls. How many gallons of batter are in each bowl?
Answer:
→ Since the whole is being put into 2 equal parts or bowls, this is the partitive model of division. What division expression can we write to match this story?
→ 34 ÷ 2
→ We can also think of this problem as asking, “3 fourths is 2 groups of what?” Let’s take a look at how to solve this using an area model. What is the whole? How much batter is being shared?
→ Three-fourths gallon
→ The story tells us that the batter is poured equally into 2 bowls. How can we show this in the model?
→ We can draw another line, horizontally, to partition the model into 2 equal units.
→ Now our model shows 3 fourths being partitioned into 2 equal parts. Could we also say that our model shows 12 of 3 fourths?
→ Yes, it’s just like in the Opening Exercise where dividing by 2 and multiplying by are the same.
→ Let’s label our model to show that. What is half of 3 fourths?
Half of 3 fourths is 3 eighths.
→ Yes, and what is 3 fourths divided by 2?
→ It’s also 3 eighths!
→ We said that we could also think of this problem as, “3 fourths is 2 groups of what?” Is it true that 3 fourths is 2 groups of 3 eighths? Use a repeated addition or multiplication sentence to support your response.
→ Yes, it’s true. 3 eighths plus 3 eighths is 6 eighths, which is equal to 3 fourths. →. It’s true.
2 × 38=68=34.
Eureka Math Grade 6 Module 2 Lesson 1 Example Answer Key 2
34 ÷ 2 = 12 of 34 = 38
38 gallon of batter in each bowl.
Step-by-step explanation:
what is the slope of the line that passes through the points (0,4) and (30,-9) in simplest form
[tex]m = \frac{y2 - y1}{x2 - x1} \\ m = \frac{ - 9 - 4}{30 - 0} \\ m= \frac{ - 13}{30} \\ m = - \frac{13}{30} [/tex]
I ALSO PROVIDED YOU THE FORMULA TO USE WHEN FINDING THE GRADIENT/SLOPE FOR FUTURE USE.
GOODLUCK.
Passes through the point of intersection of x-y=0 and x + y = 0 and (2, 2) find the equation of a straight line
The equation of the line is x-y=0
What is point of intersection?
A point of intersection is a point where two lines intersect.
We are given the two equations as x-y=0 and x+y=0
The point of intersection can be given by finding the coordinates of which will satisfy both the equation
Now the equation can be solved by
The point of intersection is (0,0)
We have to find the equation of the line passing through the point (0,0),(2,2)
This can be done by
[tex]\frac{y-0}{0-2}=\frac{x-0}{0-2}[/tex]
[tex]\frac{-y}{2}=\frac{-x}{2}[/tex]
[tex]x-y=0[/tex]
Hence the equation of the line passing through the point of intersection of x-y=0 and x+ y=0 and (2,2) The equation of the line is x-y=0
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A triangle has a 45° angle and two sides 8 centimeters in length.Select True or False for each statement about this type of triangle.True FalseThe triangle might be an equilateral triangle.The triangle must be a right triangle.The triangle might be an acute triangle.
Answer
The triangle might be an equilateral triangle.
False
The triangle must be a right triangle.
False
The triangle might be an acute triangle.
True
Explanation
First of, we will explain the different types of triangles that exist based on side lengths and angle measures respectively,
Based on side lengths,
- Scalene triangle has none of its three sides having the same length as another. All the three sides have different lengths. To use angle to know this, all the three angles of a Scalene triangle have different values.
- Isoscelles triangle has two of its sides with the same lengths. In terms of angles, an Isoscelles triangle has two of its angles equal to each other.
- Equilateral triangle has all of its sides equal to one another. In terms of angles, all of the angles of an Equilateral triangle are equal to one another. Each of the angle is equal to 60°.
Based on angle measures,
- Acute triangle has all of the angles in the triangle being less than 90 degrees.
- Right angle triangle has one of the angles in the triangles being equal to 90 degrees.
- Obtuse triangle has one of the angles in the triangle being greater than 90 degrees but obviously less than 180 degrees.
So, a sketch of the triangle described would look like
So, we can see that the triangle has two sides equal, hence, the two base angles will be equal to.
If we call those base angles, x,
x + x + 45° = 180°
2x = 180° - 45°
2x = 135°
Divide both sides by 2
(2x/2) = (135°/2)
x = 67.5°
Three angles of the triangle are 45°, 67.5° and 67.5°
So, taking the statements one at a time now
The triangle might be an equilateral triangle.
This statement is False since it is evident that all the angles of this triangle are not equal to one another, hence, the sides cannot all be equal too.
The triangle must be a right triangle.
This statement too, is False. None of the angles of the triangle is equal to 90°.
The triangle might be an acute triangle.
This statement is True. All of the angles of the triangle are less than 90°.
Hope this Helps!!!
Give an example of a scatter plot with 6 points that has a correlation of r= -1 on the axesbelow. How do you know the correlation value is -1 without using a calculator
The Solution:
Required:
To give example of a scatter plot with 6 points and has a correlation of r = -1.
Below is the scatter plot: