While waiting for a video game to download, you notice that 30% percent of 32,00 comma, kilobytes have been downloaded so far.
1 answer:
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The distributive property shows that you need to multiply the separately by each term in the parentheses. This means you multiply
and
, then add them together to get
, or in the terms of your answer choices,
.
Answer:
4 mph
Step-by-step explanation:
The average speed of an object is given by the total distance covered by the time taken:
where
d is the total distance covered
t is the time taken
in the first part, the person runs for 0.4 hours at a speed of 7 mph, so the distance covered in the 1st part is
Then the distance covered in the second part is , so the total distance is
(1)
The total time elapsed is 0.4 hours (first part) + 0.8 hours (second part), so
So we can write the average speed as
(1)
We want the average speed to be 5 mph,
v = 5 mph
Therefore we can rearrange eq.(1) to find d2:
And therefore, the speed in the second part must be