79 is the length because
292-2(67)= 158
158/2 = 79
9x-20=7
9x=27
x=3
Hope that helps you :)
F
Triangle equals 180
42+42=84
What is 180-84
That would be the next angle
positive number times negative number is negative number "(+)(-) = (-)".

we change the mixed numbers to the improper fractions

Answer:
4, 2, 9, 3. They all work out
Step-by-step explanation:
If you need more help just lemme know! :))