Answer:
310 minutes
Step-by-step explanation:
1. Find the minutes Marta exercises in a month that has 31 days if she exercises 30 minutes each day:
Martha exercises 930 minutes in a month.
2. Find the minutres Greg exercises in a month that has 31 days if he exercises 40 minutes each day:
Greg exercises 1240 minutes in a month.
3. Calculate how many more minutes Greg does exercise than Marta:
1240 - 930 = 310 minutes
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:
(4, -1)
Step-by-step explanation:
(4, y) is a solution to x - 2y = 6.
Find the value of y:
The value of y is '-1'.
(4, -1) is a solution to the equation.
Hope this helps.