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Mariulka [41]
3 years ago
14

Please help! please show the work and not give me and answer thank you ❤️

Mathematics
1 answer:
Citrus2011 [14]3 years ago
8 0

Ans. 1 Angle E and angle F are corresponding angles.

Solution 2.

So,

angle E = angle F

=> x + 20 = 5x - 20

=> x + 20 + 20 = 5x

=> x + 40 = 5x

=> 40 = 5x - x

=> 40 = 4x

=> 40/4 = x

=> 10 = x

Solution 3.

E = x + 20

=> E = 10 + 20

=> E = 30

F = 5x - 20

=> F = 5(10) - 20

=> F = 50 - 20

=> F = 30

<em>Again</em><em> </em><em>justified</em><em> </em><em>that </em><em>they </em><em>are </em><em>equal</em><em> (</em><em> </em><em>besides</em><em> </em><em>answer </em><em>1</em><em>)</em><em>.</em>

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In the pantry, the ratio of apples to bananas is 2:7. There are 21 bananas. How many apples are there?
aleksandrvk [35]

Answer:

6

Step-by-step explanation:

2:7 is like 2x:7x

7x=21

x=3

2*3=6

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3 years ago
If f(x)=1/9x-2, what is f–1(x)?
jekas [21]

we are given

f(x)=\frac{1}{9x-2}

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step-1:

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y=\frac{1}{9x-2}

step-2:

Switch x and y

x=\frac{1}{9y-2}

step-3:

now, we can solve for y

x=\frac{1}{9y-2}

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x\times (9y-2)=(9y-2)\times \frac{1}{9y-2}

x(9y-2)=1

9xy-2x=1

Add both sides by 2x

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y=\frac{2x+1}{9x}

so, we get inverse function as

f^{-1}(x)=\frac{2x+1}{9x}................Answer


3 0
3 years ago
What is the slope of the graph of y = x^2 + 12 -7 at the point x = 4
Doss [256]

Answer:

20

Step-by-step explanation:

Step 1:  find the derivative of y = x^2 + 12x - 7; it is 2x + 12.

This function represents the slope of the tangent line to the given curve at x.

Step 2:  Substitute 4 for x in f '(x) = 2x + 12:  f '(4) = 2(4) + 12 = 20

The slope of the tangent line to the graph of y = x^2 + 12x - 7 at x = 4 is 20.

6 0
4 years ago
39. Kate recorded the time it took six children of
scZoUnD [109]

Answer:

y=-11x+261

Step-by-step explanation:

As you can observe in the image attached, the line that best fits passes through point B and C. That means we can use those point to find the slope of such line.

m=\frac{y_{2} -y_{1} }{x_{2}-x_{1}  }

Where B(11,137) and C(12,126)

m=\frac{126-137}{12-11}=-11

So, the slope of the line that best fits is -11, approximately.

Now, we use the point-slope formula to find the equation.

y-y_{1} =m(x-x_{1} )\\y-137=-11(x-11)\\y=-11x+124+137\\y=-11x +261

Therefore, the line that best fits is y=-11x+261 approximately.

Remember, when we estimate a line for some data on a scatterplot, we are calculating an approximation, that's why we also said "approximately", because the line is an approximation where the majority of point meet.

4 0
4 years ago
Brainliest! Help, thanks! Answer quickly
IgorC [24]

Answer:

B.10

Step-by-step explanation:

4 0
2 years ago
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