The answer is no. the first equation is not right
First you need to know the definition of a complementary angle. That means that two angles add up to 90 degrees, or a right angle.
To find an angle complementary to a 78 degree angle, you need to subtract 78 from 90.
90 - 78 = 12
Answer:
Step-by-step explanation:
It is C.
Volume-πr^2h
r-11
h-15
11^2*15
=1815π
Answer:
x = 4
Step-by-step explanation:
8x - 9 = 6x - 1
Bring variables to the left side, whereas numbers to the right.
8x - 6x = - 1 + 9
2x = 8
x = 8 / 2
x = 4
Answer:
y = -4
Step-by-step explanation:
12y + 4 = 8y-12
Subtract 8y from each side
12y - 8y +4 = -12
4y +4 = -12
Subtract 4 from each side
4y +4-4 = -12 -4
4y = -16
Divide by 4
4y/4 = -16/4
y = -4
