Can somebody help me with this?

141 °

since they are supplementary angles and they always add to 180 °

C

Step-by-step explanation:

<1+<2=180 (angle addition postulate)

<1=39 (given)

39+<2=180 (substitution property)

<2=180-39 (subtraction property)

<2=141 ( simplification)

C, or 141 degrees. Have a nice day!

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

x is greater than 5

step-by-step explanation:

2x+7 is greater than 17

    -7                           -7

2x is greater than 10

divide by 2 each side

x is greater than 5