Answer:
w(t-4)=t^2-9t+20
Step-by-step explanation:
w(t)=t^2-t
w(t-4)=(t-4)^2-(t-4)
w(t-4)= t^2-8t+16-t+4
w(t-4)=t^2-9t+20
Answer:
x =17
Step-by-step explanation:
Complementary angles add to 90
4x+ x+5 = 90
Combine like terms
5x+5 = 90
Subtract 5 from each side
5x+5-5 = 90-5
5x = 85
Divide by 5
5x/5 = 85/5
x =17
Answer:
1
Step-by-step explanation:
This shows how to multiply fractions. When you multiply fractions, you just multiply across, and then simplify.
Answer:
B. 38°
Step-by-step explanation:
The angles of a triangle add up to 180.
So, 62 + 80 + b will add up to 180.
First, we add 62 =80, which gives us 142.
The we subtract 142 from 180, which gives us 38.