Answer:
A 24
Step-by-step explanation:
Assuming this is a right triangle, we can use the Pythagorean theorem
a^2+ b^2 = c^2
a^2 + 7^2 = 25^2
a^2 +49= 625
Subtract 49 from each side
a^2 +49-49 = 625-29
a^2 = 576
Take the square root of each side
sqrt(a^2) = sqrt(576)
a = 24
Since y = 3x+5 and y = 3x+8 are parallel (same slope), then the 2 lines wqill never intersect, hence there is no solution
Answer:
Division property of equality.
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
If a=6 and the equation is 4+2a. This is how you wold solve it: 4+2(6)= 4+12= 16. So your answer is B. 16
Hope this helps
