9 cuz 4 times 1/2 is 2 and 2+7=9
Volume of a pyramid is (L * w * h) / 3
L=10 and w=10
h can be found by using the Pythagorean theorem:
divide the base by 2 and we get 5. Then we have that the hypotenuse is 13 and the bottom of the right triangle we formed is 5. a= sqrt(c^2-b^2)
a=h=12
we plug these numbers into the formula for the volume of a pyramid and get:
400
Question:
Linear Equation In One Variable
solve x,

Answer:

Step-by-step explanation:
Given

Required
Solve for x

Multiply through by 2





Solve for x


Answer:

Step-by-step explanation:
find the least common denominator for both fractions then combine them to find:

6x + 4x + 10 = 180
10x = 170
x = 17
mCA = 4(17) + 10 = 68 + 10 = 78
Answer:
mCA = 78°