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OlgaM077 [116]
3 years ago
13

Two numbers are such that if 11 is added to the first number, a number twice

Mathematics
1 answer:
Bezzdna [24]3 years ago
5 0

Answer:

The 2 numbers are 14 and 17.

Step-by-step explanation:

Let the 2 numbers be x and y.

x + 11 = 2y

x - 2y = -11...............A

y +20 = 2x

2x - y = 20 ...............B

Multiply equation A by -2:

-2x + 4y = 22............C

Adding B and C :-

3y = 42

y = 14.

Substitute y = 14 in equation A:

x - 2(14) = -11

x = -11 + 28

x = 17.

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Answer:

C 18 x minus 9 = 72

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Step-by-step explanation:

Hope this helped

6 0
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The length of the longer leg of a right triangle is 20 inches more than twice the length of the shorter leg. The length of the h
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Answer:

Step-by-step explanation:

Let x represent the length of the hypotenuse.

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Let z represent the length of the longer leg.

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Therefore,

(2y + 22)² = y² + (2y + 20)²

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= 4y² + 44y + 44y + 484 = y² + 4y² + 40y + 40y + 400

4y² + 88y + 484 = y² + 4y² + 80y + 400

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5y² - 4y²+ 80y - 88y + 400 - 484

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

Let Obi's age be x and Oba's age be y

<u><em>Condition 1:</em></u>

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<u><em>Condition 2:</em></u>

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<u><em>Putting eq (1) in (2)</em></u>

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Answer:

Podemos hacer la conversión entre [\text{H}^+][H

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3 years ago
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