Use pothomath that app is good
For math
Answer:
The angle of elevation of the sun is 60 degrees.
Answer:
8π
Step-by-step explanation:
2 * π * r * 0.5
16π * 0.5
8π
Answer:
x = 11 or 3
Step-by-step explanation:
f(x) = (1/2)(x- 7)² – 8
to find the zeros, we equate f(x) = 0
f(x) = 0
(1/2)(x- 7)² – 8 = 0 (add 8 to both sides)
(1/2)(x- 7)² = 8 (multiply both sides by 2)
(x- 7)² = (8)(2)
(x- 7)² = 16
x-7 = ±√16
x-7 = ±4
hence,
x - 7 = 4
x = 4 + 7
x = 11
or
x - 7 = -4
x = -4 +7
x = 3
Hey there!
Let's write this as a system of equations.
m+b=31
b= 2m-11
Let's plug our value for b into the first equation and solve for m.
m+2m-11=31
Let's combine like terms.
3m-11=31
We add 11 to both sides.
3m=42
We divide both sides by 3.
m=14
Therefore, Maggie is <u>14 years old.</u>
I hope this helps!