Answer:
9.5 cm
Step-by-step explanation:
on the bottom with 18, divide that like 3 12 3 (which is 18) and it will make a square in the middle.
10^2 = x^2+3^2
100= x^2+9
x^2=91
square root 91
=9.5 cm
for the system of equations
the three matrices needed to use Cramer's Rule are:
.
To use Cramer's Rule we have to calculate the three determinants listed below of the matrices listed below.
.
The value of the determinants are shown below.

The value of y is
.
Answer:
Please, see the attached files.
Step-by-step explanation:
Please, see the attached files.
Answer:
942 square cm
Step-by-step explanation:

It is best to draw the situation given above to understand the problem better. You will see that there are two right triangles that can be made. One would have the angle 67 degrees and the other with angle 35 degrees. We calculation as follows:
From the triangles, we can set up two equations with two unknowns:
tan 67 = h/x
tan 35 = h/(20+x)
h = 19.93 ft