Step-by-step explanation:
The answer is c, since they both add up to 90°
Step-by-step explanation:
i. 3x-1=20
or, 3x= 21
x= 7
ii. 3x+1= 22
3x= 21
x= 7
iii. 2x-5=99
2x= 104
x=52
iv. g(3)= 3+5/2= 11/2
g(0)= 0+ 5/2=5/2
g(-3)= -3+5/2 = -1/2
x+5/2= 0
so, x= -5/2
3 - (-2) = 1 because there's more positive than negative and the signs are different so you subtract. 3 - (-2) is the same as 3 + (-2). So be careful when choosing the brainiest answer! You may use a calculator and see whoever is correct.