Answer:
B
Step-by-step explanation:
Because 15-4=11
and both angles are equal
We have a right triangle with
a = one leg = 28
b = other leg = 21
c = hypotenuse = 5x
use the pythagorean theorem (a^2+b^2 = c^2) and solve for x
a^2+b^2 = c^2
28^2+21^2 = (5x)^2
784+441 = 25x^2
1225 = 25x^2
25x^2 = 1225
(25x^2)/25 = 1225/25
x^2 = 49
sqrt(x^2) = sqrt(49)
|x| = 7
x = 7 or x = -7
Since the hypotenuse has length 5x meters, this means
5x = 5*7 = 35
or
5x = 5(-7) = -35
Toss out the negative length as it makes no sense.
The only value of x is x = 7
Therefore the final answer is x = 7
Answer:
Step-by-step explanation:
4 workers × 5 hours = 20 worker-hours
Each vehicle requires 1 worker-hour
For five workers it will take four hours
<span>The parallel lines extend infinitely in both directions, and the line segment has two endpoints.
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I think about 200 people will vote for eric let me recheck
