Answer:
21+4r
Step-by-step explanation:
Combine like terms
(14+7)+(-9r+13r)
21+4r
9514 1404 393
Answer:
-20v +10u +15
Step-by-step explanation:
The factor outside parentheses multiplies each term inside parentheses.
-5(4v -2u -3) = (-5)(4v) +(-5)(-2u) +(-5)(-3)
= -20v +10u +15
Answer:

Step-by-step explanation:
in the equation given these are the values:
a=1 b= -5 c= -7
if we plug this in the quadratic formula 
this is simplified to 
hope this helped
Answer: 73
Step-by-step explanation:
365/5 =75 so 5 miles of going 73 miles per hour
1+38*225(12/77)
1+38*225*6.41
1*8550*6.41
1+54,805.5
54,806.5
Use pemdas to solve it