Answer:
X = 8
Step-by-step explanation:
5x + 2(4x-16) = 72
multiply 2 into the parenthesis
5x + 8x-32 = 72
combine like terms
13x - 32 = 72
add 32 on both sides
13x = 104
divide by 13 on both sides
X = 8
Using Pythagorean theorem, the answer should be D
Answer:
A) and D)
Step-by-step explanation:
The area of the quadrilateral = 42 square units
A) 42
B) 50
C) 54
D) 42
7x(√x - 7√7) Multiply √7x to "√x" and "-7√7" respectively:
√7x*√x - 7√7*√7x
First is to simplify: √7x² - 7√7²x
Extract the squares: x√7 - 7*7√x
Then, we simplify: x√7 - 49√x
After simplifying the equation, I got the answer x√7 - 49√x.
Answer:
2b+9
Step-by-step explanation:
Twice the quantity b is 2*b = 2b
...and then you add 9 which is:
2b+9
