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3 years ago

How do u solve this?

Mathematics

1 answer:

Nesterboy [21]3 years ago

6 0

Hello there!

$\frac{k}{2} + 1 - 1k = -2k$
Simplify
$\frac{1}{2} k +1-k=-2k$
$\frac{-1}{2} k+1=-2k$
$\frac{3}{2} k+1=0$
$\frac{3}{2} k =-1$
$k=-1* \frac{2}{3} 

k= -2/3$

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Answer with explanation:

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4 years ago

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Zarrin [17]

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3 years ago

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3 years ago

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DIA [1.3K]

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3 years ago

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Harlamova29_29 [7]

Answer:

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Step-by-step explanation:

We use systems of equations in two variables to solve this problem.

Recall that the definition of speed (v) is the quotient of the distance traveled divided the time it took : $v=\frac{distance}{time}$ . Notice as well that the speed of both cars is the same, but their times are different because they covered different distances. So if we find the distances they covered, we can easily find what their speed was.

Writing the velocity equation for car A (which reached its destination in 24 minutes) is:

$v\,*\,24\,min=d_A$

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$v\,*\,32\,min=d_A+5\,miles$

Now we solve for $d_A$ in this last equation and make the substitution in the equation for car A:

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4 years ago