Answer:
8
Step-by-step explanation:
Answer:
- 8
Step-by-step explanation:
Given
x² - 64 = 0 ( add 64 to both sides )
x² = 64 ( take the square root of both sides )
x = ± = ± 8
Solutions are x = 8 and x = - 8
Answer:
x = 135
Step-by-step explanation:
All the angles of a pentagon added up make 540 degrees.
540 - 60 = 480
480 - 150 = 330
330 - 120 = 210
210 - 75 = 135
x = 135
27x^2 - 42x + 12
If x = 2:
27(2)^2 - 42(2) + 12
= 27(4) - 84 + 12
= 108 - 72
= 36
Answer:
y =20
Step-by-step explanation:
you have to get the y by itself so what you do on one side you do to the other. subtract 12 on both sides and you get y=20