Answer:

Step-by-step explanation:
We need to find 
We know that √-1 = i
Adding -49 and -4 and solving

Since 53 is not a perfect square so our answer is:

7 dollars
if 2 pears and 6 apples is 14
and 3 and 9 is 21
2x7 is 14
3x7 is 21
it's like your doubling the amount each time you add...
Answer:
Most commonly seen in the consumer goods industry
Answer:
500/31.25=16
Step-by-step explanation:
The school bought 16 calculators