Answer: b=2
Step-by-step explanation:
-2+2=0
So, b would be 2 because -2 plus 2 equals zero
Answer:
Option 4.
Step-by-step explanation:
Reciprocal of the second fraction turns the product into the division of the two fractions, which equals to 1.


Two fractions are said to be the reciprocal or multiplicative inverse of each other, if their product is 1.
Answer:
Step-by-step explanation:
since 3 * 15 = 45, we know that we have to multiply 5 by 15. so the ratio would be 45:75. I hope this helps!