Answer:
answer a
Step-by-step explanation:
Answer is a if I am not mistaken
3.16 × 10 - 23 * 1 x 10 ^ 9 = 3.16 x 10 ^ -14
10) is the last one
11)the first one
:)
The answer is 20.5
6t-9u=10
2t+3u=4
t=11/6
u=1/9
Hope This Helps!!!
11
30-2(7+2)-1
PEMDAS says parentheses first
30-2(9)-1
Then multiply
30 -18 -1
Then subtract
12-1
