Rachel rides her bicycle due East at 12 kilometers per hour. Amos rides his bicycle due north at 16 kilometers per hour. If they left from the same point at the same time, how far apart will they be after 3 hours?

A. Square root of 112 km
B. 400 km
C. 60 km
D. 28 km

2? if not the correct answer you might need to provide more information

step-by-step explanation:

there are many solutions.

step-by-step explanation:

step 1: simplify both sides of the equation.

4x+6=4x^2+10x−4

step 2: subtract 4x^2+10x-4 from both sides.

4x+6−(4x^2+10x−4)=4x^2+10x−4−(4x^2+10x−4)

−4x^2−6x+10=0

step 3: factor left side of equation.

−2(2x+5)(x−1)=0

step 4: set factors equal to 0.

x=-5/2 or x=1

answ9x x 3=

step-by-step explanation:

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.