Answer:
plus and minus
Step-by-step explanation:
example : 3 ± 5 = 8 or -2
Answer:
1/3 of 3 hours should be 20 minutes
Answer:

Step-by-step explanation:
a reciprocal is a number that when multiplied by a given number gives 1 as product.
16 * x = 1
x = 1/16
9/10 * x = 1
x = 10/9
Answer: 2?
Step-by-step explanation: