8x+2(3x-12)=-122 Find the value for x. I'm so bad at this kind of thing plz I need help

Mathematics

1 answer:

vampirchik [111]3 years ago

6 0

Answer: x=-7

Step-by-step explanation:

1. distribute the 2 to (3x-12) >>>> 8x+6x-24=-122

2. add 8x and 6x to get 14x >>>> 14x-24=-122

3. add 24 to both sides>>>> 14x=-98

4. divide 14 by both sides>>>x=-7

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tamaranim1 [39]

Answer:

<em>The SUV is running at 70 km/h</em>

Step-by-step explanation:

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$d=\sqrt{x^2+y^2}$

To find the instant speeds, we need to compute the derivative of d respect to the time (t). Since d,x, and y depend on time, we apply the chain rule as follows:

$\displaystyle d\ '=\frac{x.x'+y.y'}{\sqrt{x^2+y^2}}$