60/12=5. We use the number 60 because60 minutes per hour, 8x5=40. 40mph
This is a sum and difference problem, with the equations
R-N=35
R+N=635
The solution of which is
R=(635+35)/2=335
N=(635-35)/2=300
In general, the sum and difference problem can be solved (most of the time mentally) using
Larger number = (sum + difference)/2
Smaller number = (sum - difference)/2
Answer:
3/10
Step-by-step explanation:
3/5 + 1/10
3/5 = 6/10
6/10 + 1/10 = 7/10 = total bedroom space he painted
10/10 - 7/10 = 3/10 = how much space is left
Answer = 3/10
Answer:
84
Step-by-step explanation:
2^2=4
4 + 8=12
12 times 7= 84
Answer:
A.) 0.33
Step-by-step explanation:
