Right triangle xyz has a right angle at vertex y and a hypotenuse that measures 24 cm, angle zxy measures 70°
what is the length of line segment xy? round to the nearest tenth.
8.2 cm
8.7 cm
22.6 m
25,5 cm

A

Step-by-step explanation:

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

In the right triangle XYZ the cosine of 70 degrees is equal to divide the adjacent side to angle of 70 degrees (XY) by the hypotenuse (XZ)

so

substitute the given value

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.

0.50 , 0.75

step-by-step explanation: