The answer is k= m-9+8j over +9 (the third option)
Step-by-step explanation:
ΔACX is an isosceles triangle, so ∠AXC = ∠XAC. We'll call the measure of this angle x°.
∠AXC and ∠BXC are supplementary, so ∠AXC + ∠BXC = 180. That means ∠BXC = 180 − x.
ΔBXC is an isosceles triangle, so ∠XBC = ∠XCB. We'll call the measure of this angle y°.
Angles of a triangle add up to 180, so:
y + y + (180 − x) = 180
2y = x
y = x/2
∠ACX and ∠XCB are complementary, so ∠ACX + ∠XCB = 90.
x + y = 90
x + x/2 = 90
3/2 x = 90
x = 60
Therefore, ∠AXC = ∠XAC = 60°.
Answer:
the answer is -4
Step-by-step explanation:
Answer:
480
Step-by-step explanation:
So we have the expression:
![-8(2z-70)](https://tex.z-dn.net/?f=-8%282z-70%29)
And we want to evaluate it for z=5 and c=2:
So:
![=-8(2(5)-70)](https://tex.z-dn.net/?f=%3D-8%282%285%29-70%29)
Multiply within the parentheses:
![=-8(10-70)](https://tex.z-dn.net/?f=%3D-8%2810-70%29)
Subtract within the parentheses:
![=-8(-60)](https://tex.z-dn.net/?f=%3D-8%28-60%29)
Multiply:
![=480](https://tex.z-dn.net/?f=%3D480)
3 1/7 Because there are three multiples of 7 and 1 remainder.