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4 years ago

HELP ASAP PLZ

Mathematics

1 answer:

Papessa [141]4 years ago

8 0

Answer:

$\displaystyle x = 2\:and\:y = 5$

Step-by-step explanation:

{x = 2y - 8

{4x + y = 13

13 = 4[2y - 8] + y

13 = 8y - 32 + y

13 = −32 + 9y

+ 32 + 32

____________

$\displaystyle \frac{45}{5} = \frac{9y}{9}$

$\displaystyle 5 = y$ [Plug this back into both equations above to get the x-coordinate of 2]; $\displaystyle 2 = x$

I am joyous to assist you anytime.

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Damon plans to buy a snowboard that cost $160. Damon has $40. He will save $20 each week until he has enough to buy the snowboar

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Answer: It will take Damon 6 weeks to save the money he needs to buy the snowboard

Step-by-step explanation:

First, let's see what the problem is giving us:

-The variable X will represent the number of weeks it will take Damon to save the money he needs.

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Therefor:

Our equation will be: $40 + $20X = $160

Step 1

We need to isolate the variable by subtracting in both sides of the equation 40 in order to maintain the equality.

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