13. Find the angle between the given vectors to the nearest tenth of a degree. u = <9, 4>, V = <5, -6>

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles. i'm desperate.

In priyas math class there are 10 boys and 15 girls. what is the ratio of boys to girls in priyas math class? express your answer as a decimal

On the first of each month sasha runs a 5k race she keeps track of her times to track her progress her time in minutes is recorded in the table