<span>Note D = r(t)
20min = 1/3 hr and 10min = 1/6 hr
(1/3hr)30mph + (1/6hr)3mph = 10.5 mi, the total distance traveled.
total distance / total time = average speed = 10.5/(1/3 + 1/6) = 10.5/(2/6 + 1/6)
10.5mi/.5hr = 21mph
Hope This Helps
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Answer:
62
Step-by-step explanation:
There are two lengths so 77 + 77 is 154. Now, subtract from the perimeter. 278 minus 154 is 124. This is both widths combined so to only get one, divide by 2. 124 divided by 2 is 62.
One tenth is one decimal point to the right of a number. For example, one tenth of 2 is 0.2 This is the same as dividing by ten. 0.1 X 10 = 1. 0.1 is one tenth of 1.
Answer:
Step-by-step explanation:
5(3m + n) = 15m + 5n