Answer:
I ready hope you find the answer
Step-by-step explanation:
Answer:
A and C
Step-by-step explanation:
Given
2cos²x - 2 = 0 ( add 2 to both sides )
2cos²x = 2 ( divide both sides by 2 )
cos²x = 1 ( take the square root of both sides )
cos x = ± 
= ± 1
cos x = 1 ⇒ x = 
(1) = 0°
cos x = - 1 ⇒ x = (- 1) = 180°
Answer:
Step-by-step explanation:
b - 7x = a - b....subtract b from both sides
-7x = a - b - b....combine like terms
-7x = a - 2b....divide both sides by -7
x = (a - 2b) / -7....or it could be written as x = -1/7a + 2/7b
Answer:
81
Step-by-step explanation:
3^7/3^3
3*3*3*3*3*3*3=2187
3*3*3=27
2187/27=81
60 square feet for 287 = 287/60 = 4.78 per square foot
so ur equation would be : y = 4.78x + 80....where x is the number of square feet and y is the total cost
