Answer:
W' = 54.4 pounds
Step-by-step explanation:
Given that,
The weight of a bag of books = 40 pounds
After picking up some books at school, the weight has increased by 36%.
We need to find the weight of the bag now. Let the new weight is W'.
So,
W' = 40 +36% of 40
i.e.

So, the new weight of the bag is equal to 54.4 pounds.
Answer:
4 pints
Step-by-step explanation:
The conversion from pint to ounce is:
1 pint = 16 ounces.
The teacher collected 19 pints, that is, 19*16 = 304 ounces of lake water.
If there are 60 students, and each of them use 4 ounces, the total of lake water used is 60*4 = 240 ounces.
So, the amount of lake water left is 304-240 = 64 ounces, that is, 64/16 = 4 pints.
Answer:
8.9
Step-by-step explanation:
1. DE:BC=AD:AB
2. AD=AB+BD, but according to the conditions AB=5, then
AD=5+BD.
3. after the substitution DE=16; BC=9; AB=5 and AD=5+BD into the formula:
16:9=(5+BD):5;

BD=80/9 - 5≈3.9.
4. if AD=AB+BD, then AD=5+3,9=8,9
The length of the hypotenuse = 7.1 inch
Step-by-step explanation:
In an isosceles right angle triangle if one leg is 5 inch, another side along the right angle is 5 in
hypotenuse =
( by Pythagoras theorem)
=
= 
= 7.07106781
= 7.1 inch (approx)
Answer:
-21=24
Step-by-step explanation:
Subtract 24 from 3
-21=8+2^2
Raise 4 to the power of 2
-21=8+16
Add 8 and 16
-21=24