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2 years ago

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What value of x satisfies the system of equations {2x+5y=35x=−10−15y? Enter your answer as the correct value for x, like this: 4

2

1 answer:

Nata [24]2 years ago

7 0

Answer:

x = 23

Step-by-step explanation:

2x + 5y = 35 * (-3) ------> -6x -15y = -105 (A)

x = -10 - 15y -----> x + 15y = -10 (B)

(A) + (B)

-5x = -115

x = 23

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stich3 [128]

Answer:

<u>Part A: </u>

<u>n = 5q (1st equation)</u>

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<u>Part B:</u>

<u>q = 4 ⇒ n = 5 * 4 = 20</u>

<u>Part C:</u>

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Step-by-step explanation:

Let's recall that a nickel has a value of $ 0.05 and a quarter a value of $ 0.25.

Let n represent the number of nickels and q represent the number of quarters.

Part A:

Write a system of equations to represent the situation.

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Part B:

Replacing n in the 2nd equation to solve for q:

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