Answer:
54 seconds
Step-by-step explanation:
Wanda's walking rate = 3 ft/s
Wanda's head start = 27 s
Dave's walking rate= 4.5 ft/s
Let 't' be time after Dave started walking
The distance walked by Wanda and Dave, respectively, as a function of 't' are given by:
The instant 't' at which Dave catches up to Wanda (both distances walked are equal) is:
Here is your solution,
(-5)^2 - √25 - 4 x (-14)/2
25 - √ 25 + 56/2
25 - √81/2
(25 - 9)/2 = 16/2 = 8
or
25 + √25 +56/2
25 + √81/2
(25 + 9)/2 = 34/2 = 17
So m = 8,17
Answer
Find out the how many sports trophies does Amy have .
To prove
Let us assume that the number of sports trophies Amy have be x.
As given
Amy has two rows of 4 sports trophies on each of her three shelves.
Than the equation becomes
x = 2 × 4 × 3
simply multiply the above terms
x = 24
Therefore there are 24 sports trophies Amy have .
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