Answer:
X = -1
Step-by-step explanation:
Subtract 12 from both sides
Subtract 12 from 9 to get -3
Divide both sides by 3
Divide -3 by 3 to get -1
10:20 and 20:30 form a ratio
Answer:
If two angles are supplementary, then they must form a straight angle. If two angles are obtuse, then they can be vertical angles. If two angles are vertical angles, then they will always be congruent.
Step-by-step explanation:
Answer: ITs B
Step-by-step explanation: because the Ir which mean of real numbers the range is the higher number
(1 - 3i)(5 + 5i)(4 - 1i)
= (5 + 5i - 15i - 15i²)(4 - 1i)
= (5 - 10i - 15i²)(4 - 1i)
= 20 - 40i - 60i² - 5i + 10i² + 15i³
= 20 - 45i - 50i² + 15i³
