Just use distributive property (multiply 7 times 7k and 7 times -10 )
This equals 49k-70
Hope this helped :)
Combine like terms first.
4b2+2b2-b2= 5b2
5b2 +5
5 x 5^2+5
5 x 25 + 5
125+5
130
Multiply 4 and 6 to get X alone on one side of the equation. 6 • 4 = 24, so x = 24
Answer:
Step-by-step explanation:
circumference for A=2π×12=24π
linear velocity=24π÷6=4π cm/sec
circumference for B=2π×15=30π
linear velocity=30π÷6=5π cm/sec
