two nascar cars are racing around a 2 mile track. one car can complete a lap in 48 seconds, and the other car can complete one lap in 40 seconds. if they start side by side, after how much time will they be side by side again
Answers
First we need to find the speed of each car using the formula
, where s is the speed, d is the distance and t is time.
Since they are moving in the same direction we subtract the speeds to obtain relative velocity,
, then
. This is the time it takes for the fastest car to complete an extra lap relative to the slower car.
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Devin has started a lawn care service. He will charge a mowing fee of $10 plus $3 per square yard of lawn. He also offers trimming service, at $8 plus $1 per yard of the perimeter. Using x for the length of the lawn and y for the width of the lawn which part of the expression 10+3xy+8+(2x+2y) represents the charge for the mowing?A. 8+(2x+2y) B. (2x+2y) C. 3xy D. 10+3xy
Emanuel read 150 pages in 5 hours. how many pages would he read in 4 1/2 hours?
What is 1/4 of $8.000 dollars?
Answers
Answer:
Your answer would be
X^2-7
Step-by-step explanation:
Hope it helps .
Good luck .
Answers
Answer:
76m
Step-by-step explanation:
You divide 6688 by 88 and your answer will be 76.
Answers
Anish has......
Nick has......
Answers
Anish = Nick ÷ 2 or 1/2 Nick
S + A + N = 140
1/6 N + 3/6 N + 6/6 N = 10/6 N (140)
10/6 N = (140)
140 ÷ 10 = 1/6 N (14) = Scott
9/6 N (126) - 3/6 (42 = Anish) = N = 84
S = 14
A = 42
N = 84
CHECK?
14 = 1/3 of 42
42 = 1/2 of 84
14 + 42 + 84 = 140 :)
then
Anish has 1/2x games
and
Scot has 1/2*1/3 = 1/6x games
thus
1/6x + 1/2x + x = 140
1/6x + 3/6x + x = 140
10/6x = 140
10x =140* 6
x = 84 > Nick
1/2x = 42 > Anish
1/6x = 14 > Scot
Answers
5
1
3
none of these
Answers
ie, sub 1, 3 and 5 for x and see which one is true
20-2(1)=10
20-2=10
18=10
false
20-2(3)=10
20-6=10
14=10
false
20-2(5)=10
20-10=10
10=10
true
answer is 5