Solve the following equation.

latex: \left|\frac{x}{7}\right|=1| x 7 | = 1

group of answer choices

latex: x=7 x = 7

latex: x=-4,\: x=-16 x = − 4 , x = − 16

latex: x=7,\: x=-7 x = 7 , x = − 7

latex: x=-5,\: x=-13

x = +7, x = -7

Explanation:

The equation to solve is:

Which means that the absolute value of the fraction must be equal to 1. Since we have an absolute value, we have basically two equations to solve:

1)

Solving this one, we find

2)

Solving this one, we find

So the two solutions are +7 and -7.

f=ma newton

f=100x2.5=250n

snell's law

refractve index = sin incidence / sin refraction