Answer:
20
Step-by-step explanation:
15+(-2)+7=13+7=20
Answer: 44
Step-by-step explanation:The way to calculate the number of coins that she had originally is to look at the difference in coins that changed hands. She sold 12 coins, but only bought 7 new ones. 12-7=5. Lucinda now has 5 coins less than what she started out with. So, she has 39 now, and then add 5 and the answer is 44 coins.
Answer:
8m^5-33m^3
Step-by-step explanation:
Combine like terms Expand and simplify
To answer that question, find the closest perfect squares on either side of 
. Those are the whole numbers falls between.
What is the closest perfect square less than 51?
What is the closest perfect square greater than 51?
Take the square root of both those numbers and you have your answer.
$29.99 is the final price.
"y" is the original price.
Subtract the savings from the original price to get the final price of $29.99.
70% = 70/100 = .70
y - (y x .70) = 29.99
y - .7y = 29.99
.3y = 29.99
.3y/.3 = 29.99/.3
y = 99.96667
y = $99.97 (rounded)
