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balu736 [363]
4 years ago
7

Suppose that PR=47. Solve for x and find the lengths of PQ, and QR.

Mathematics
1 answer:
lidiya [134]4 years ago
6 0

Answer:

x = 10

PQ = 27

QR = 20

Step-by-step explanation:

You can add up PQ and QR and set it equal to PR.  Solve for x.

(2x + 7) + (2x) = 47

2x + 7 + 2x = 47

4x + 7 = 47

(4x + 7) - 7 = 47 - 7

4x = 40

4x/4 = 40/4

x = 10

Now, use the solved x-value to find PQ and QR.

PQ = 2x + 7

PQ = 2(10) + 7

PQ = 20 + 7

PQ = 27

QR = 2x

QR = 2(10)

QR = 20

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3 years ago
Solve 2x + 3y = 16<br> 4x+10y = 40​
Aleksandr-060686 [28]

Answer:

x = 5, y = 2

Step-by-step explanation:

First, find the value of x in respect to y:

2x + 3y = 16
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x = 8 - 3/2y

Then, substitute this expression into the second equation (Since we've established x is equal to 8 - 3/2y, we can put that in place of x):

4(8 - 3/2y) + 10y = 40

Then, distribute and solve for y:

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Now that we know what y equals, we can substitute the value of y in the equation to find x:
2x + 3(2) = 16
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<u>x = 5</u>


8 0
3 years ago
Karl is buying a new car. At Bank A, a car loan will cost him 11.5%. At Bank B, it will cost 12.25%. If he borrows $8,000, how m
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5 0
3 years ago
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Answer:

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Step-by-step explanation:

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6 0
3 years ago
Solve for x <br> 9(x - 2)=18
SVETLANKA909090 [29]

Answer:

x = 4

Step-by-step explanation:

9(x - 2) = 18

9 * x = 9x

9 * -2 = -18

9x - 18 = 18

+18         +18

9x - 18 + 18 = 9x

18 + 18 = 36

9x = 36

----   -----

9      9

9x/9 = x

36/9 = 4

x = 4

5 0
4 years ago
Read 2 more answers
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