Find y. Round to the nearest tenth.
Z
90 ft
55 ft
X
50 ft
Y
Y = [? 1°
Law of Cosines: c2 = a + b2 - 2ab cos C

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

the answer is 2/54

step-by-step explanation:

b, 20 yards

step-by-step explanation: