3x+2x=180 if 2x=y, find x and y

Looking at the question, I'm assuming it has a mistake.

However, I will first attempt to solve it normally:

Simply combine like terms to get 5x = 180, and thus x = 36, and y = 72

The first mistake possibility is that the first equation should be 3x + 2y = 180

If that is the case, simply substitute in 2x for y, turning the equation into

3x + 2 (2x) = 180

3x + 4x = 180

7x = 180

Thus, x = 25.715 and y = 51.43

Another possible mistake is that the first equation should be 3y + 2x = 180

Solve similar to the first mistake

3 (2x) + 2x = 180

6x + 2x = 180

8x = 180

Thus, x = 22.5, and y = 45

Hope it helps :)

part a

x     y

0     8

1     7.5

2     7

3     6.5

4     6

5     5.5  

for every hour i deducted .5 inches from the length of the candle

part b

it is a function because for every x value there is only one y value

part   c

for every x value there is only one y value

x       y

0       8

1       7.6

2       7.2

3       6.8

step-by-step explanation:

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step-by-step explanation: