↔
AC
A, C, with, \overleftrightarrow, on top is tangent to circle
O
OO at point
C
CC.
What is the measure of
∠
O
A
C
∠OACangle, O, A, C?

∘
∘
degrees

O
O
A
A
B
B
C
C
4
5
∘
45
∘

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

If i have 20$ and i gave 5$ away how much i got

Find the area of the triangle formed by the origin and the points of intersection of parabolas y=−3x^2+20 and y=x^2−16.