Answer:
B
Step-by-step explanation:
pi / 2 is equal to 180°/2 which is 90°.
Cos (90°) = 0
if cos90 = 0 then what kind of graph will we have at 90° to the x axis ?
a graph passing through the origin. (0,0)
Yes, (1,7) is a solution.
(x,y)
y < x + 8
y ≤ 6x + 1
7<1+8 = 7<9 Yes, true.
7≤6(1)+1 = 7≤ 7 Yes, true.
Yes, (1,7) is a solution to the inequalities.
I think u need to subtract both up and both down
80 is the fixed amount because it is a cost before you get their services. So basically the Y intercept. It is if you pay for an 80$ membership fee and then you are charged per month.
a + 5 = 11
You need to isolate the variable by subtracting from both sides
a + 5 - 5 = 11 - 5
a = 6
The Addition/Subtraction Property of Equality states that if you add or subtract the same number to both sides of an equation the two sides still remain equal.
:))
