Answer:
20'C
Step-by-step explanation:
50-30= 20
3 hundreds is 300, 17 tens is 170, and 2 ones is 2. You add them all and then you get 472.
Answer:
A
Step-by-step explanation:
substitute the x for 9
y = 3(9) - 4
multiply 3 and 9
y = 27 - 4
subtract 4 from 27
y = 23
it has to be a because it is the only one with 23 as the y
Answer:
85 and -31
Explanation:
x + y = 54
x - y = 116
solve for x in first equation
x = 54 - y
sub into second equation
54 - y - y = 116
54 - 2y = 116
-2y = 62
y = -31
sub in x equation
x = 54 - (-31)
x = 85