Substitution method 2x-y+24 y=-3x+16

1 answer:

4 0

- Using substitution means you are going to solve one equation for one variable and substitute with its value in the other equation in order to get also an equation with one variable.

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What is the answer to 7x + 2 + 2x

kotykmax [81]

Answer:

Your answer is 9x+2

Step-by-step explanation:

All you have to do is add like terms, for example, all of them that have X you can add them up,

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arlik [135]

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Melissa notes that her savings account earned $54.93 in nine months. If the

djyliett [7]

Answer:

$135.63

Step-by-step explanation:

first and foremost, the formula for interest is I = Prt. P is the principal, r is the rate, and t is the time.

so plug in the numbers you have. Always convert the rate to a decimal. The rate would be 0.0.45. Plug in 54.93 for the I and plug in 9 for the time. It would look like this:

54.93 = P(0.045)(9) --> 54.93 = 0.405P --> P = 135.63

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4 years ago

A roof drops 6 feet for every 3 feet forword,determine the slope of the roof the slope can be positive or negative

dalvyx [7]

Answer:

The slope is -2

Step-by-step explanation:

Since the roof is decreasing in height as it goes forward, I know that the slope must be negative. The equation to find the slope is rise/run. The vertical change, or the rise, is -6 feet, so that value goes on top of the fraction. The horizontal value, or the run, is 3 feet so that goes on the bottom of the fraction.

Now our fraction is $\frac{-6}{3}$