Solveit

2.50626566*100 = 250.626566%

What is x ? if there s a picture please paste that too

what you need to find is distance from one point to another (sides of triangle):

$\sqrt{(x_2-x_1)^2+(y_2-y_1)^2} \\ \text{ABC}_{triangle}\\ AB=\sqrt {(-6)^2 + (-2)^2}= 6.324555\\ AC=\sqrt {(4 - 2)^2 + (-2 - 4)^2}= 6.324555\\ BC=\sqrt {(4 - (-4))^2 + (-2 - 2)^2}=8.944272$

$ADE_{triangle}\\ AD=\sqrt {(-1 - 2)^2 + (3 - 4)^2}=3.162278\\ AE=\sqrt {(3 - 2)^2 + (1 - 4)^2}=3.162278\\ DE=\sqrt {(3 - (-1))^2 + (1 - 3)^2}=4.472136$

SO:

$\frac{AB}{AD}=\frac{AC}{AE}=\frac{BC}{DE}=1.999999683772268$

use only "( )"  not "[ ]"

use that:

find the diference first:

42-36 = 6

and the what percent is the diffrence:

6/42 = 0.1428571428571429

multiply by 100 to find the percent sign:

0.1428571428571429*100 = 14.28571428571429%

A boy flying a kite lets out 300ft of string which makes an angle of 38 degrees with the ground. Assuming that the string is straight, how high above the ground is the kite?

I think:

 you have hyp. 300 ft. and angle 38 degrees. The question is asking for opposite of 38 degrees

So what deals with the opposite and hyp.

$sin=\frac oh \\ sin(38)=\frac{O}{300} \\ sin(38)*300=O \\O=184.6984425976974839\dots$

the third side is:

20-15 < third side < 20+15

5 < third side < 35