4a + 6b = 10
2a - 4b = 12...multiply by -2
----------------
4a + 6b = 10
-4a + 8b = - 24 (result of multiplying by -2)
------------------add
14b = - 14
b = -14/14
b = -1
2a - 4b = 12
2a - 4(-1) = 12
2a + 4 = 12
2a = 12 - 4
2a = 8
a = 8/2
a = 4
so 12a = 12(4) = 48 <==
Divide and if u divide by 4 it would be 4/1 so the it the answer would be 4
Answer:
382
Step-by-step explanation:
I can give you straight up answer.
Answer:
70°
Step-by-step explanation:
ABC is the center angle that sees the arc and is twice as angle ADC so the measure of ABC is e × 35 = 70
