4x + x - 15 + 3 -8x = 13
Combine like terms:
(4x+x-8x) + (-15+3) =13
-3x-12 = 13
+12 +12
———————-
-3x = 25
— —-
-3 -3
X= -25/3
Answer: 7 rows
Step-by-step explanation:
she will have 7 rows with 4 seats in each row or 4 rows with 7 seats in each row
Travel at the speeds of 65 miles per hour to drive the distance of 310 miles (if the speed in which the person in question is traveling at the same speed) =
310 divided by 65 =
= 4 and
hours
since it is "traveled distance = speed multiplied by time it takes
Answer:
252
Step-by-step explanation:
The order of the books isn't important, so we'll use combinations.
The number of ways to choose 5 books from 10 is:
₁₀C₅ = 10! / (5! (10 − 5)!)
₁₀C₅ = 10! / (5! 5!)
₁₀C₅ = 10×9×8×7×6 / (5×4×3×2×1)
₁₀C₅ = 252
I think its C :) what do you think?