7. What is the description of 21 as it relates to the situation shown? 5 A. Z1 is the angle of elevation from the airplane to the radar tower. B. Z1 is the angle of depression from the radar tower to the aiſplane. C. 21 is the angle of elevation from the radar tower to the airplane. D. ZI is the angle of depression from airplane to the radar tower.

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

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.

h= 12 inches

step-by-step explanation: