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alexdok [17]
3 years ago
6

Given m || n, find the value of x and y. m(7x+13) n(3y-17) (9x-19)

Mathematics
1 answer:
Varvara68 [4.7K]3 years ago
4 0

Answer:

9x - 19 = 7x + 13 \\ 2x = 32 \\ x = 16 \\ 3y - 17 + 9x - 19 = 180 \\ 9x + 3y = 180 + 17 + 19 \\ 9x + 3y = 216 \\ 3y = 216 - 144 = 72 \\ y =  \frac{72}{3}  = 24

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Answer:

b) 12.6 inches

Step-by-step explanation:

tangent is the ratio of the side opposite over adjacent, so if we let x= length of the opposite side, 1.40=x/9, x=12.6 inches

3 0
3 years ago
A first number plus twice a second number is 1. Twice the first number plus the second totals 23. Find the numbers.
TEA [102]
X=15
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3 years ago
Dionne can fold 175 packing boxes in 50 mìnutes. Elias can fold 120 packing boxes in 40 minutes. How long will it take each pers
Gre4nikov [31]
<h2>Dionne will fold 210 packing boxes in "60 mìnutes" and</h2><h2>Elias will fold 210 packing boxes in "70 mìnutes".</h2>

Step-by-step explanation:

Given,

Dionne can fold 175 packing boxes = 50 mìnute and

Elias can fold 120 packing boxes = 40 minutes

To find, the total time each person to fold 210 packing boxes = ?

∵ Dionne can fold 175 packing boxes = 50 mìnute

∴ In 1 mìnute, Dionne can fold number of packing boxes = \dfrac{175}{50} = 3.5

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= 60 minutes

Also,

Elias can fold 120 packing boxes = 40 minutes

∴ In 1 mìnute, Elias can fold number of packing boxes = \dfrac{120}{40} = 3

∴  Elias can fold 210 packing boxes = \dfrac{210}{3} minutes

= 70 minutes

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Elias will fold 210 packing boxes in "70 mìnutes".

8 0
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4 0
4 years ago
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mojhsa [17]

Answer:

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Step-by-step explanation:

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  A = πr²

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Filling in given values in the above equations, we can find r and dr/dt.

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  20 = 2π·5·dr/dt

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The radius is increasing at the rate of 2/π ≈ 0.637 meters per second.

4 0
3 years ago
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