Answer:
-3x and y are terms that cannot be combined, so their sum is -3x+y.
Step-by-step explanation:
You want an explanation of how y = 3x +4 becomes -3x +y = 4.
BalanceA balance is a mechanical contraption with two pans joined by a "beam" that rests on a pivot point between them. When the weights in the two pans are the same, the contraption is "balanced" and the pans sit level.
When the contraption is unbalanced, the heavier pan sits lower than the lighter one and the beam is not level.
The feature of the balance that is of interest here is that we can add or subtract weight from either pan. As long as we do the same thing to the other pan, it will remain balanced (the beam will be level).
ExampleConsider a balance with yellow marbles and green marbles on both sides. Let the number of green marbles be 4, and the number of yellow marbles be 3.
If I remove 3 yellow marbles from the right side of the balance, so only the 4 green ones remain, I must also remove 3 yellow marbles from the left side to maintain the balance.
EquationAn equation is similar to a balance in that the parts on the left side and the parts on the right side of the equal sign have the same value when it is "true" or "balanced".
We can keep the statement of equality true as long as we perform the same operation on both sides of the equal sign.
The equation ...
y = 3x +4
says the value of y is the same as the value of the sum of 3x and 4. When I subtract (remove) 3x from the right side of this equation, it will only remain true (balanced) if I also remove 3x from the left side. Written on one line, this operation looks like ...
(-3x) +y = (-3x) +3x +4 . . . . . . -3x added to both sides
On the left side, the terms -3x and y have different variables. They are "unlike" terms, so cannot be combined. Their sum is "indicated" as ...
-3x +y
On the right side of the equal sign, the terms -3x and 3x have the same variable. They are "like" terms, so can be combined. The total number of instances of x in this sum is 0:
-3x + 3x = (-3 +3)x = 0x = 0
After the addition of -3x to both sides of the equation, the resulting equation is ...
-3x +y = 0 +4
We know that 0 is the additive identity element, so this can be further simplified to ...
-3x +y = 4
Bringing downIf we had the addition equation ...
70 + y = 30 +4
and we wanted to add -30 (same as subtract 30) to both sides, we could write this sum in a vertical format as ...
[tex]\begin{array}{rrcrr}70&+y&=&30&+4\\-30&&=&-30&\\\cline{1-5}40&+y&=&&+4\end{array}[/tex]
The sum in the left column is the sum of the like terms there. Since we started with something we could subtract 30 from, the resulting sum is a numerical value (40).
Your example seeks to show the same sort of operation, except that there are no like terms to add -3x to. The resulting sum of nothing (0) and -3x is -3x.
In the above example, if 70 were 0, the value on the bottom line in the first column would be -30. That is, the -30 would be "brought down", since it remains unchanged by addition to 0.
[tex]\begin{array}{rrcrr}0&+y&=&30&+4\\-30&&=&-30&\\\cline{1-5}-30&+y&=&&+4\end{array}[/tex]
Your example has -3x instead of -30. The ideas remain the same. Yes, the "-30" or "-3x" is "brought down", because there is nothing to add it to.
This vertical format for adding equations is often seen in a teaching setting. It is intended to show the equality of the stuff being added, and how it lines up with terms already there. When the vertical alignment is not preserved (as in your example), the comparison to the vertical alignment of columns in addition of multidigit numbers is lost. This tends to obscure the conceptual similarity.
Some may prefer the horizontal expression:
(-3x) +y = (-3x) +3x +4 . . . -3x added to both sides
-3x +y = 4 . . . . . . . . . . . . simplified
Standard formAs your example attempts to show, the standard form of the equation for a line is ...
Ax +By = C
The conditions on this form are generally ...
the leading coefficient is positivethe coefficients are mutually prime integersPlease note that the example you are presented shows addition of -3x to both sides of the equation. The property of equality also applies to multiplication: equality is preserved if both sides of the equation are multiplied by the same number.
In order to make the leading coefficient (the coefficient of x) be positive, we can multiply both sides of the equation by -1:
-1·(-3x +y) = -1·(4)
Parentheses are eliminated using the distributive property.
3x -y = -4 . . . . . . . . . the standard form of the equation for your line
__
Additional comment
The standard form can be used for horizontal and vertical lines. In these cases, one of the coefficients is zero:
Ax = C . . . . . a vertical line at x = C/A
By = C . . . . . a horizontal line at y = C/B
The equation of a vertical line in slope-intercept form is impossible, because its slope is "undefined."
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8=4 When one end of a class is not specified, the
class is called
(a) closed- end class
(b) open- end class
(c) both
(d) none
jasmine is building a flower garden.
The larger rectangle represents the entire garden. The smaller rectangle represents the roses in her garden. The shaded area represents the 3-foot tulip border around her roses.
What is the area of the tulip border, or the shaded region, of this figure in square feet?
Enter your answer in the box.
ft²
The area of the tulip border, or the shaded region, of this figure in square feet is 32
How to determine the valueThe formula that is used for calculating the area of a rectangle is expressed as;
A = lw
Such that the parameters are;
A is the area of the rectanglel is the length of the rectanglew is the width of the rectangleFrom the information given, we have that the tulip is in a 3 -foot border from the larger rectangle
Then, we have that;
Length = 10 - 6 = 4
Width = 14 - 6 = 8
Substitute the values
Area = 4(8) = 32 ft²
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The eyes of a student standing at the edge of a platform are 8 ft above the ground. She sees a wallet on the ground at an angle of depression of 32°. About how far away from the base of the platform is the wallet?
A.4.2 ft
B.12.8 ft
C.5.0 ft
D.15.1 ft
The wallet is about 12.8 feets away from the base of the platform.
Angle of depressionusing trigonometric function , the angle of depression can be obtained using the tangent relationship.
The tangent can be mathematically related using the ratio of the opposite and adjacent side.
Tan(A) = opposite/Adjacent
tan(32°) = 8/x
Solving for x, we get:
x = 8/tan(32°)
x = 12.8 feet
Hence , the wallet is about 12.8 feet away from the base of the platform.
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Emily has $100 extra to spend on supplies for her T-shirt-making business. She wants to buy ink, /, which costs $8 a bottle, and new brushes, b, which are $18 each. Which inequality below represents this scenario?
A. 8i+1 8b ≥ 100
B. 18i+100 ≤ 8b
C. 8i+18b ≤ 100
D. 18i+8b ≤ 100
Answer:
D: 18i + 8b ≤ 100
Step-by-step explanation:
The correct inequality that represents the scenario is option D: 18i + 8b ≤ 100.
Explanation:
Let's break down the components of the inequality based on the given information:
8i represents the cost of ink bottles (i) at $8 each.
8b represents the cost of brushes (b) at $18 each.
18i + 8b represents the total cost of ink bottles and brushes combined.
The scenario states that Emily has $100 extra to spend, which means the total cost of ink bottles and brushes should be less than or equal to $100. Therefore, the correct inequality is 18i + 8b ≤ 100.
20% of 60 is equal to_____% of 100
Answer:
12
Step-by-step explanation:
20% of 60 is equal to_____% of 100
we find 20% of 60 and we have the answer20% of 60 =
60 : 100 × 20 =
0.6 × 20 =
12
pls help me for brainleist
Answer: x=72
Step-by-step explanation:
All of the angles of a triangle add up to 180
32+x+x=180 >combine x's
32+2x=180 >subtract 32 from both sides
2x=148 >Divide both sides by 2
x=74
Answer:
x = 74Step-by-step explanation:
We know that,
sum of 3 side of triangle is 180°
So,
→ 32° + x + x = 180°
→ 32° + 2x = 180°
→ 2x = 180° -32°
→2x = 148
→ x = 148/2
→ x = 74
Thus, x = 74°
the number of items sold at store 1 can be represented by y=200x+300 where x represents the number of days and y represents the number of items sold the number of items sold at store 2 can be represented by y=200x+100
There is no day when the Number of cupcakes sold at Location 1 is equal to the number of cupcakes sold at Location 2. on Day 5, Location 2 sold 850 cupcakes.
(a) To determine the number of cupcakes sold at each location on Day 5, we substitute x = 5 into the equations:
For Location 1:
y = 150x + 200
y = 150(5) + 200
y = 750 + 200
y = 950
Therefore, on Day 5, Location 1 sold 950 cupcakes.
For Location 2:
y = 150x + 100
y = 150(5) + 100
y = 750 + 100
y = 850
Therefore, on Day 5, Location 2 sold 850 cupcakes.
(b) To find the day when the number of cupcakes sold at Location 1 is equal to the number of cupcakes sold at Location 2, we set the two equations equal to each other:
150x + 200 = 150x + 100
We can see that the variable x cancels out, which means the value of x doesn't matter in this case. The equation simplifies to:
200 = 100
However, this equation is not true. It implies that the number of cupcakes sold at Location 1 can never be equal to the number of cupcakes sold at Location 2.
Therefore, there is no day when the number of cupcakes sold at Location 1 is equal to the number of cupcakes sold at Location 2.
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Note the full question may be :
A local bakery keeps track of the number of cupcakes sold each day at two different locations. At Location 1, the number of cupcakes sold is represented by the equation y = 150x + 200, where x represents the number of days and y represents the number of cupcakes sold. At Location 2, the number of cupcakes sold is represented by the equation y = 150x + 100.
(a) Determine the number of cupcakes sold at each location on Day 5.
(b) On which day will the number of cupcakes sold at Location 1 be equal to the number of cupcakes sold at Location 2?
In a certain lottery, four different numbers between 1 and 25 inclusive are drawn.
These are the winning numbers. To win the lottery, a person must select the correct 5 numbers in the same order in which they were drawn. What is the probability of winning?
The probability of winning the lottery in this case is 1 in 3,645,280.
This is because there are 25 possible numbers that can be drawn for each of the four positions, meaning there are 25×25×25×25 (or 25⁴) possible combinations of the four winning numbers.
We know that, probability of an event = Number of favourable outcomes/Total number of outcomes.
To win, you must select the correct combination of the four winning numbers in the same order in which they were drawn. If you select any other combination, you will not win.
Therefore, the probability of winning the lottery is 1 in 25⁴, which is 1 in 3,645,280.
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1. Find the area of the composite figure below. Make sure you show your work neatly for full
credit.
(3.5)
18 in.
18 in.
9 in.
36 in.
18 in.
The calculated area of the composite figure is 85 cm².
How to calculate the the area of the composite figureFrom the question, we have the following parameters that can be used in our computation:
The composite figure (see attachment)
Where, we have
Rectangle:
Area = length × width.
Therefore, the area of the rectangle is 10 cm × 6 cm = 60 cm².
Triangle:
Area = (1/2) × base × height.
Therefore, the area of the triangle is (1/2) × 5 cm × 10 cm = 25 cm².
To find the total area of the composite figure, we add the areas of the rectangle and the triangle:
Total Area = Area of Rectangle + Area of Triangle
= 60 cm² + 25 cm²
= 85 cm².
Therefore, the area of the composite figure is 85 cm².
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◄* What value is equivalent to (8 + 2)² + (6 − 4) × 3?
X
A 6
X
B 106
1x C
110
D 18
E
94
Answer:Your answer is 106
Step-by-step explanation:
cos69 rounded to the nearest hundredth
Cos69 rounded to the nearest hundredth is approximately 0.39.
90×4/9=40 is this equation true
The equation is correct, and the value on both sides of the equation is 40.
To verify if the equation 90 × 4/9 = 40 is true, we can perform the calculation on both sides and compare the results.
On the left side of the equation:
90 × 4/9 = (90 × 4) / 9 = 360 / 9 = 40
On the right side of the equation:
40
Both sides of the equation evaluate to 40, which means they are equal. Therefore, the equation 90 × 4/9 = 40 is indeed true.
In summary, the equation is correct, and the value on both sides of the equation is 40.
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Use the vertex (h, k) and a point on the graph (x, y) to find the general form of the equation of the quadratic function. Vertex = (-7,6) Point = (-10,5)
The general form of the equation of the Quadratic function is y = (-1/9) x2-(14/9) x-43/9.
The general form of the equation of the Quadratic function is y = (-1/9) x2-(14/9) x-43/9.
The general form of the equation of a quadratic function given the vertex and a point on the graph, we can use the vertex form of the quadratic equation y = a( x- h) 2 k where( h, k) represents the vertex of the parabola. In this case, the vertex is(- 7, 6) and the point is(- 10, 5). We can substitute these values into the equation to get 5 = a(- 10-(- 7)) 2 6 Simplifying farther 5 = a(- 10 7) 2 6 5 = a(- 3) 2 6 5 = 9a 6 Now, we can break for' a' a = 5- 6 9a = -1 a = -1/ 9 Substituting this value back into the equation, we get y = (-1/9)( x-(- 7)) 2 6
Simplifying farther y = (-1/9)( x 7) 2 6 Expanding and rearranging, we can write the equation in general form y = (-1/9)( x2 14x 49) 6 y = (-1/9) x2-(14/9) x-49/9 6 y = (-1/9) x2-(14/9) x-43/9 So, the general form of the equation of the quadratic function is y = (-1/9) x2-(14/9) x-43/9.
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A farmer has his good tethered to a 6 m long chain what is the goats area
The goat has 113.097 square meters of area to roam within the tethered radius.
The area available to the goat can be calculated using the formula for the area of a circle.
The goat is tethered to a 6 m long chain, which means it can move in a circular area with a radius of 6 meters.
The formula for the area of a circle is given by:
Area = π × r²
The radius of the circular area is 6 meters.
Therefore, the area available to the goat is:
Area = π × 6²
= π ×36
= 113.097 square meters
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33. Consider the figure.
The figure shown
is a (n)
converse
inverse
contrapositive
counterexample
of the statement, "The diagonals
of a parallelogram bisect opposite
angles."
The figure shown is a counterexample of the statement, "The diagonals
of a parallelogram bisect opposite angles."
The figure shown is a counterexample of the statement,
"The diagonals of a parallelogram bisect opposite angles."
A counterexample is a specific example that disproves a statement by showing that it doesn't hold in all cases.
In this case, the figure demonstrates a parallelogram where the diagonals bisect opposite angles, thus contradicting the statement.
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A television transmission tower casts a shadow 1130 feet long. The angle formed by the ground and a line from the top of the tower to the tip of the shadow is 48.3 degrees. How tall is the tower? Round your answer to the nearest foot.
The height of the television transmission tower is approximately 1298 feet.
The height of the television transmission tower, we can use trigonometry and the concept of tangent.
Let's denote the height of the tower as h.
We know the length of the shadow is 1130 feet and the angle formed by the ground and the line from the top of the tower to the tip of the shadow is 48.3 degrees.
The tangent of an angle is defined as the ratio of the opposite side to the adjacent side.
The height of the tower is the opposite side and the length of the shadow is the adjacent side.
Using the tangent function, we can set up the following equation:
tan(48.3°) = h / 1130
To solve for h, we can multiply both sides of the equation by 1130:
1130 × tan(48.3°) = h
Using a calculator, we find:
h ≈ 1130 × 1.1477
≈ 1297.601 feet
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This graph represents the height a baseball travels in t seconds. How long is the height of the ball increasing?
• 0.5 Seconds
• 1 Second
• 2.4 Seconds
• 30 Seconds
The duration during which the height of the ball is increasing is from 1 second to 2.4 seconds.
To determine the duration during which the height of the ball is increasing, we need to analyze the given data points.
At 0.5 seconds, the height is 27 units.
At 1 second, the height is 31 units.
At 2.4 seconds, the height is 2 units.
We can observe that the height is decreasing between 0.5 seconds and 1 second because the height decreases from 27 to 31. This indicates that the ball is descending during that time interval.
However, between 1 second and 2.4 seconds, the height is increasing because the height goes from 31 to 2 units. This implies that the ball is ascending during that time interval.
Therefore, the duration during which the height of the ball is increasing is from 1 second to 2.4 seconds.
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Help Quickly! Look at the tree diagram for tossing a coin three times. Find the probability of getting exactly two tails.
A. 3/4
B. 1/3
C. 3/8
Answer:
3/8
Step-by-step explanation:
There are 8 outcomes. Three have exactly two tails.
You are choosing between two health clubs. Club A offers a membership for a fee of $17 plus a monthly fee of $29. Club B offers membership for a fee of $11 plus a monthly fee of $30. After how many months will the total of each health club be the same?
The total cost of each health club will be the same after the 6 months.
What is an equation?An equation is a statement that the values of two mathematical expressions are equal (indicated by the sign "=".)
There are two health clubs A and B.
To find the total fee of club A:
Total fee of club A = membership fee of A + monthly fee of A[tex]\rightarrow\$17+\$29[/tex]To find the total fee of club B:
Total fee of club B = membership fee of B + monthly fee of B[tex]\rightarrow\$11+\$30[/tex]Let us assume that the number of months at which the cost of both clubs A and B is same is 'x'.
Total cost of club A for x months = Total cost of club B for x months
[tex]\rightarrow \sf 17 + 29x = 11 + 30x[/tex]
[tex]\rightarrow \sf 30x - 29x = 17-11[/tex]
[tex]\rightarrow \sf 1x = 6[/tex]
[tex]\rightarrow \sf x=\dfrac{6}{1}[/tex]
[tex]\rightarrow \bold{x = \underline{6 \ months}}[/tex]
Hence, after 6 months, the total cost of each health club will be the same.
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Answer:
6
Step-by-step explanation:
Let's assume that the total cost of membership after "m" months for club A is "T(A)" and the total cost of membership after "m" months for club B is "T(B)".
For club A, the total cost of membership after "m" months is given by:
T(A) = 17 + 29m
For club B, the total cost of membership after "m" months is given by:
T(B) = 11 + 30m
To find the number of months when the total cost is the same for both clubs, we need to solve for "m" in the equation:
T(A) = T(B)
Substituting the expressions for T(A) and T(B), we get:
17 + 29m = 11 + 30m
Simplifying and solving for "m", we get:
m = 6
Therefore, the total cost of membership will be the same for both clubs after 6 months. After that point, Club A will be more expensive due to its higher monthly fee.
can you answer this question on GRAPHS and find what D is with working out
Answer:
[tex](18,14)[/tex]
Step-by-step explanation:
[tex]\mathrm{Since\ AB=BC=CD,\ we\ may\ say\ that\ B\ is\ midpoint\ of\ AC\ and\ C\ is\ midpoint}\\\mathrm{of\ BD.}\\\mathrm{Let\ the\ coordinates\ of\ C\ be\ (x,y)\ and\ D\ be\ (a,b).}\\\mathrm{Using\ midpoint\ formula,}\\\\\mathrm{(6,6)=(\frac{0+x}{2},\frac{2+y}{2})}\\\\\mathrm{or,\ 6=\frac{x}{2}\ and\ y+2=12}\\\\\mathrm{or,\ x=12\ and\ y=10}\\\mathrm{So,\ coordinates\ of\ C\ is\ (12,10).}[/tex]
[tex]\mathrm{As\ C\ is\ midpoint\ of\ BD,}\\\\\mathrm{(x,y)=(\frac{6+a}{2},\frac{6+b}{2})}\\\\\mathrm{or,\ (12,10)=(\frac{6+a}{2},\frac{6+b}{2})}\\\\\mathrm{or,\ 12=\frac{6+a}{2}\ and\ 10=\frac{6+b}{2}}\\\mathrm{or,\ a=18\ and\ b=14}\\\mathrm{So,\ the\ coordinates\ of\ D\ is\ (18,14).}[/tex]
You have recently been hired to create a blueprint for a water park! Your
boss, Gelatinous Harrington, is a very skeptical person. She wants you to
include specific attractions and necessities in your design. You will need to
plan an accurate and logical layout of each park attraction to use for your
ordered pairs.
Location:
Help Center
Large Whirlpool (
Water Slide #1
Water Slide #2
Water Slide #3
Toddler Area
Lazy River
Concessions
Ordered Pairs:
Please help Worth 150 points!
I remember doing this in 8th grade, this was genuinely fun.
Anyways,
To create an accurate and logical layout of the water park attractions, we can use ordered pairs to represent the location of each attraction. Assuming that the water park is laid out on a rectangular grid, we can use (x, y) coordinates to represent the location of each attraction, where x represents the horizontal position and y represents the vertical position.
Here are some possible ordered pairs that could represent the location of the attractions in the water park:
Help Center: (0,0)
Large Whirlpool: (10,10)
Water Slide #1: (5,20)
Water Slide #2: (15,20)
Water Slide #3: (10,30)
Toddler Area: (20,0)
Lazy River: (30,15)
Concessions: (25,30)
Of course, the actual layout of the water park will depend on various factors such as the size and shape of the park, the available space, and the specific design of each attraction. These ordered pairs are just one example of how the attractions could be laid out on a rectangular grid.
PART 2:
Sure, I can help you with that too. Here's how you can calculate the slope between attractions using the slope formula:
The slope formula is:
m = (y2 - y1)/(x2 - x1)
where m is the slope of the line connecting two points (x1, y1) and (x2, y2).
For example, to calculate the slope between the Help Center and the Large Whirlpool, we can use the ordered pairs (0,0) and (25,25):
m = (25 - 0)/(25 - 0) = 1
Therefore, the slope between the Help Center and the Large Whirlpool is 1.
Similarly, we can calculate the slopes between each pair of attractions using their respective ordered pairs.
To find the midpoint between two attractions, we can use the midpoint formula:
Midpoint formula: ((x1 + x2)/2, (y1 + y2)/2)
For example, to find the midpoint between the Help Center and the Large Whirlpool, we can use the ordered pairs (0,0) and (25,25):
((0 + 25)/2, (0 + 25)/2) = (12.5,12.5)
Therefore, the midpoint between the Help Center and the Large Whirlpool is (12.5,12.5).
Once you have the slope and midpoint for each pair of attractions, you can use them to writethe linear equations for the lines connecting the attractions. The point-slope form of a linear equation is:
y - y1 = m(x - x1)
where m is the slope of the line and (x1, y1) is a point on the line.
For example, to write the linear equation for the line connecting the Help Center and the Large Whirlpool, we can use the slope of 1 and the midpoint of (12.5,12.5):
y - 12.5 = 1(x - 12.5)
Simplifying this equation, we get:
y = x
Therefore, the linear equation for the line connecting the Help Center and the Large Whirlpool is y = x.
Similarly, we can write the linear equations for the lines connecting each pair of attractions using their respective slopes and midpoints.
What two numbers add up to -2 and multiple to 10
There are no two Real numbers that add up to -2 and multiply to 10.
The numbers that add up to -2 and multiply to 10, we can use algebraic methods. Let's denote the two numbers as x and y. Based on the given conditions, we can set up two equations:
Equation 1: x + y = -2
Equation 2: x * y = 10
To solve this system of equations, we can use substitution or elimination methods. Let's solve it using the substitution method:
1. Solve Equation 1 for x:
x = -2 - y
2. Substitute the value of x in Equation 2:
(-2 - y) * y = 10
3. Simplify the equation:
-2y - y^2 = 10
4. Rearrange the equation to standard form:
y^2 + 2y + 10 = 0
5. Since the equation is a quadratic equation, we can apply the quadratic formula:
y = (-b ± √(b^2 - 4ac)) / (2a)
In this case, a = 1, b = 2, and c = 10.
6. Calculate the discriminant: b^2 - 4ac:
2^2 - 4(1)(10) = 4 - 40 = -36
7. Since the discriminant is negative, the quadratic equation does not have real solutions. Therefore, there are no real numbers that satisfy both conditions of adding up to -2 and multiplying to 10.
In conclusion, there are no two real numbers that add up to -2 and multiply to 10.
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Y=-4/5x
4x+5y=0
Is there any solution
The system of equations has infinite solutions.
How to solve the system of equations?Here we have the system of equations:
y = (-4/5)*x
4x + 5y = 0
We can see that y is already isolated in the first equation, then we can replace that in the second equation so we will get:
4x + 5*(-4/5)*x = 0
4x - 4x = 0
0 = 0
So we have an identity, this means that the system of equations has infinite solutions.
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Can someone answer this question?
The number that is not a possible rational zero of the given polynomial is 3/5.
The Correct option is C.
To apply the Rational Root Theorem, we need to consider the possible rational zeros of the polynomial by taking the factors of the constant term (in this case, -8) divided by the factors of the leading coefficient (in this case, 5).
The factors of -8 are: ±1, ±2, ±4, ±8
The factors of 5 are: ±1, ±5
Thus, the possible rational zeros are: ±1, ±2, ±4, ±8, ±1/5, ±2/5, ±4/5, ±8/5
Among these options, the number that is not a possible rational zero of the given polynomial is 3/5.
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Determine whether the following inequalities satisfy the number line shown below.
The inequalities which satisfy the number line shown is x>2 and x>=2.
We are given that;
The number line showing inequality
Now,
x>2 satisfies the equation by the given number line
x>=2 satisfies the equation by the given number line
x<=-3 does not satisfies the equation by the given number line
x<=-3 does not satisfies the equation by the given number line
Therefore, by the number line the answer will be x>2 and x>=2 .
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Finding Missing Angles in a Polygon
The value of x° is 133°.
Given,
Pentagon with angles 107° , 120° , 90° , 90° , x° .
A pentagon is formed by combining three triangles and thus have total of interior angles to be 540°.
Now, to calculate the value of x:
Sum of all interior angles of pentagon = 540°
Put the values of all the angles given in the figure,
120° + 107° + 90° + 90° + x° = 540°
407° + x = 540°
x = 133°
Hence the missing angle is of 133° .
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8. La siguiente imagen representa un edificio en forma de prisma rectangular que ocupa un volumen de 7,500 m3. ¿Cuánto mide en metros el ancho (a) de la base?
The base of the prism in this problem is given as follows:
A) 15 m.
How to obtain the volume of a rectangular prism?The volume of a rectangular prism, with dimensions length, width and height, is given by the multiplication of these dimensions, according to the equation presented as follows:
Volume = length x width x height.
The dimensions in the context of this problem are given as follows:
25 m, 20 m and x.
The volume is given as follows:
7500 m³.
Applying the equation for the volume, the value of x is given as follows:
25 x 20x = 7500
500x = 7500
x = 7500/500
x = 15 m.
Missing InformationThe problem is given by the image presented at the end of the answer.
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Find the zeroes of the polynomial
2+2√2x -6 and verify the relationship between its zeroes and
coefficients
To find the zeroes of the polynomial 2 + 2√2x - 6, we set the polynomial equal to zero and solve for x:
2 + 2√2x - 6 = 0
Rearranging the terms:
2√2x = 4
Dividing both sides by 2√2:
x = 2/√2
To simplify the expression, we rationalize the denominator:
x = (2/√2) * (√2/√2) = 2√2/2 = √2
Therefore, the zero of the polynomial is x = √2.
To verify the relationship between the zeroes and coefficients of the polynomial, we can use Vieta's formulas. For a quadratic polynomial in the form ax^2 + bx + c = 0, the sum of the zeroes is given by -b/a and the product of the zeroes is given by c/a.
In this case, the polynomial 2 + 2√2x - 6 is not a quadratic polynomial, but rather a linear one. However, we can still apply Vieta's formulas:
The sum of the zeroes is -b/a = -(2√2)/1 = -2√2.
The product of the zeroes is c/a = (-6)/1 = -6.
Therefore, the relationship between the zeroes (√2) and the coefficients (2, 2√2, -6) is that the sum of the zeroes (-2√2) is equal to the negation of the coefficient of the linear term, and the product of the zeroes (-6) is equal to the constant term of the polynomial.
IMPORTANT:Kindly Heart and 5 Star this answer, thanks!Can someone answer this question?
Answer:
increasing, constant, decreasing, constant
Step-by-step explanation:
the first line is going up so it's increasing
the line then goes horizontal which is constant
then the line goes down which is decreasing
then the line again goes horizontal which is constant
Housing prices in a small town are normally distributed with a mean of
$125,000 and a standard deviation of $8,000. Use the empirical rule to
complete the following statement.
Approximately 99.7% of housing prices are between a low price of
$ Ex: 5000 and a high price of $
Answer:
Approximately 99.7% of housing prices are between a low price of $101,000 and a high price of $149,000.
Step-by-step explanation:
To complete the statement using the empirical rule, we need to determine the range within which approximately 99.7% of housing prices fall.
According to the empirical rule, for a normal distribution:
Approximately 68% of the data falls within one standard deviation of the mean.
Approximately 95% of the data falls within two standard deviations of the mean.
Approximately 99.7% of the data falls within three standard deviations of the mean.
Given that the mean housing price is $125,000 and the standard deviation is $8,000, we can apply these percentages to calculate the range:
One standard deviation:
The low price would be the mean minus one standard deviation:
$125,000 - $8,000 = $117,000
The high price would be the mean plus one standard deviation:
$125,000 + $8,000 = $133,000
So, approximately 68% of housing prices fall between $117,000 and $133,000.
Two standard deviations:
The low price would be the mean minus two standard deviations:
$125,000 - 2 * $8,000 = $109,000
The high price would be the mean plus two standard deviations:
$125,000 + 2 * $8,000 = $141,000
So, approximately 95% of housing prices fall between $109,000 and $141,000.
Three standard deviations:
The low price would be the mean minus three standard deviations:
$125,000 - 3 * $8,000 = $101,000
The high price would be the mean plus three standard deviations:
$125,000 + 3 * $8,000 = $149,000
So, approximately 99.7% of housing prices fall between $101,000 and $149,000.
In conclusion, approximately 99.7% of housing prices are between a low price of $101,000 and a high price of $149,000.
Hope this helps!