Answer:
a = -12
Step-by-step explanation:
3a – 5(a - 2) = 34
→ Expand out the brackets – 5(a - 2)
– 5(a - 2) = – 5(a + 2) = -5a + 10
→ Substitute that back into the equation
3a - 5a + 10 = 34
→ Simplify the 'a's
-2a + 10 = 34
→ Minus 10 from both sides to isolate -2a
-2a = 24
→ Divide both sides by -2 to isolate a
a = -12
Answer:
-14
Step-by-step explanation:
Answer:
see below
Step-by-step explanation:
x and 80 are adjacent, supplementary angles
Supplementary angles add to 180
x+80 =180 degrees
Subtract 80 from each side
x+80-80=180-80
x=100
Answer:
Xmin = π/3 and Xmax = 7π/3
Step-by-step explanation:
I assume that the function is:
y = 5 + 3 cos² (x − π/3)
cos² x has a period of π, so to graph two periods, you need a domain that is 2π wide, so:
Xmax − Xmin = 2π
You can choose any values you want for Xmax and Xmin, so long as they are 2π units apart. To make it easy to graph, you'll probably want to choose Xmin = π/3 and Xmax = 7π/3.
Graph:
desmos.com/calculator/9w3pptakde
Each x value pairs to one and only one y value
