(82 + 78 + 82 + 77 + x) / 5 = 80
319 + x = 80 * 5
319 + x = 400
x = 400 - 319
x = 81 <== she can get an 81 on it and still get a B
Given:
Grocery store: 8 ounces of blueberries = $2.80
Farmer's market : 14 ounces of blueberries = $4.20
1 pound = 16 ounces.
Unit rate: per ounce
Grocery store: $2.80 ÷ 8 oz = $0.35 per ounce
Farmer's market: $4.20 ÷ 14 oz = $0.30 per ounce
Unit rate per pound
Grocery store: $0.35 per ounce * 16 ounces = $5.60 per pound
Farmer's market: $0.30 per ounce * 16 ounces = $4.80 per pound
93 11/16 written as a decimal is 93.6875. Rounded it is approximately 93.7
I hope this helps:)
-4 1/4 - (-9 1/2).....distribute the negative thru the parenthesis
-4 1/4 + 9 1/2 .....turn to improper fractions
- 17/4 + 19/2...common denominator is 4
-17/4 + 38/4 ....when ur dealing with 2 different signs, u subtract and take the sign of the largest number
-17/4 + 38/4 = 21/4...turn to mixed number = 5 1/4
OR
once u get to -4 1/4 + 9 1/2...turn to decimals
-4 1/4 = -4.25
9 1/2 = 9.5
-4.25 + 9.5 = 5.25 which equals 5 1/4