Answer:
8x - 36
Step-by-step explanation:
Use distributive property: a(b + c) = a*b + a*c
4(2x - 9)= 4*2x - 4*9
= 8x - 36
This is a right triangle (you can confirm by using Pythagorean Theorem: 15² + 36² = 39²)
A = 
A = 
= 15 * 18
= 270
Answer: 270 cm²
-8
Because half of 16 is eight and it’s a negative so it has to be -8
Answer:
CPCTC
Step-by-step explanation:
Triangle BUT ≅ triangle ETU. Therefore, by CPCTC (Corresponding Parts of Congruent Triangles are Congruent), we can determine that ∠B ≅ ∠E.
Step 1. Simplify
7x^2 - 8x - 4 - 2x^2 + 3x + 5 + 5x^2 - 10x - 8
Step 2. Collect like terms
(7x^2 - 2x^2 + 5x^2) + (-8x + 3x - 10x) + (-4 + 5 - 8)
Step 3. Simplify
10x^2 - 15x - 7
