-2(x - 2) - 4x = 3(x + 1) - 9x
1 answer:
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Answer:
\angle ACB=40^{\circ}, \angle ABC=63^{\circ}
Step-by-step explanation:
Finding x:
We know that , because it's a straight line. So,
.
We know that the sum of the angles of any triangle will be .
So, we have that .
Combining like terms on the left gives .
Subtracting from both sides gives
.
Dividing both sides by gives
.
Finding missing angle measures:
.
.
So, and
and we're done!
Note: . Coincidence? If not, try and prove it!
Answer:
7
Step-by-step explanation:
- Plug 8 in: 12 - [2 + 6 ÷ (10 - 8)]
- 10 - 8 = 2
- Plug 2 in: 12 - [2 + 6 ÷ (2)]
- 6 ÷ 2 = 3
- Plug 3 in: 12 - [2 + 3]
- 2 + 3 = 5
- Plug 5 in: 12 - 5
- 12 - 5 = 7
I hope this helps!