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2 years ago

5

M+(-9.5)=-7.8 how do you do this problem

1 answer:

krok68 [10]2 years ago

3 0

M + (-9.5) = -7.8

First, simplify your brackets. / Your problem should look like: $m + -9.5 = -7.8$
Second, change addition to subtraction. / Your problem should look like: $m - 9.5 = -7.8$
Third, add 9.5 to both sides. / Your problem should look like: $m = -7.8 + 9.5$
Fourth, simplify. / Your problem should look like: $m = 1.7$

Answer: m = 1.7

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First we must first have the clear concept that $speed=\frac{distance}{time}$ or $s=\frac{d}{t}$

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Let's raise the equation for each car taking into account that we have the following data:

Car 1: $s_{1}=s+1$ , $t_{1}=2$ and $d_{1}= d_{2}$

Car 1: $s_{2}=s-10$ , $t_{2}=3$ and $d_{1}= d_{2}$

The two cars travel the same distance so we will raise the distance formula for each car and then match them.

<em>Car 1</em>

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<em>Car 2</em>

$d_{2}=s_{2}*t_{2}$

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