Answer:
24.5
Step-by-step explanation:
2p/7 = 7
cross multiply
2p = 49
p = 24.9
Answer:
Answer D
Step-by-step explanation:
For each one simple put one of the x values in the x in the given equation. You will find that 9/3 give you 3, 12/3 give you 4. In other questions follow that rule for each and if the answer is the Y value then you know you are right.
Answer:
Average speed = miles per hour
Step-by-step explanation:
Formula to calculate the average speed of an object is,
Average speed =
If I travel with the speed of x mph for t hours,
Total distance covered = Speed × Time
=
= miles
Similarly, if I travel with the speed y mph for t hours,
Total distance covered = miles
Total distance covered by me = miles
Total time taken to cover this distance =
= hours
Therefore, expression for the average speed will be,
Average speed =
=
= miles per hour
Answer:
c+p = 53
2.5c+1.5p = 105.5
p = 27
c= 26
Mrs. Johnson earned 65
Mr Smith earned 40.5
Mrs Johnson earned 24.50 more
Step-by-step explanation:
Let c = cookies sold
p = popcorn sold
The number of items sold is 53
c+p = 53
The total cost of the items sold is 105.50
The number of cookies sold times 2.50 plus the number of popcorn sold times 1.50 = 105.50
2.5c+1.5p = 105.5
System of equations:
c+p = 53
2.5c+1.5p = 105.5
Multiply the second equation by 10 to clear the decimals
10 *(2.5c+1.5p) = 10*105.5
25c+15p = 1055
Divide by 5
25c/5 +15p/5 = 1055/5
5c+3p =211
Multiply equation 1 by -5
-5(c+p)=-5*53
-5c-5p=-265
Add the equations
5c+3p =211
-5c-5p=-265
---------------------
-2p = -54
Divide by -2
-2p/-2 = -54/-2
p = 27
Now we need to find c
c+p = 53
c+27 = 53
Subtract 27 from each side
c+27-27 = 53-27
c= 26
Mrs. Johnson earned the number of cookies times 2.5
c* 2.5
26*2.5 =65
Mr Smith earned the number of popcorn times 1.5
p*1.5
27*1.5
40.5
Mrs Johnson earned 65-40.5 = 24.50 more