Answer:
D
Step-by-step explanation:
Using Pythagoras' identity for right triangles
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides.
Here PR is the hypotenuse, thus
13² = 169
5² + 12² = 25 + 144 = 169
Thus Δ PQR is a right triangle because 5² + 12² = 13² → D
HKBJVGYVYGBUYUY
46.15%
(6 ÷ 13) × 100 = 46.15384615
= 46.15%
1. x=2 2. x=23
1: 7(x+3) = 39-2x
7x+21 = 39-2x
9x=18; x=2
2. 2x-5 = 1/2(3x-13)
2x-5 = 1.5x-13/2
0.5x=11.5; x=23