Make sure the bottom numbers
the denominators
are the same
Subtract the top numbers
the numerators
put the answer over the same denominator
simplify the fraction
if needed
It is going to be D because the formula for volume is length•width•height
The first option is the correct quadratic formula
Answer: x=25
solution:
we know that
The triangle external angle theorem states that: An exterior angle of a triangle is equal to the sum of the opposite interior angles
In this problem:
m∠9=m∠7+m∠8
substitute the given values:
(6x-20)°=30°+4x°
now solve for x:
6x-4x=30+20
2x=50
x=25 which is the final answer:)
