22 students completed 80 puzzles. how many puzzles would 1 student complete? (round to tenth)

If 22 students completed 80 puzzles, then one student would complete 80 puzzles divided by 22, which is approximately 3.6 puzzles.

show work

To find out how many puzzles one student would complete, we can divide the total number of puzzles completed (80 puzzles) by the number of students (22 students):

80 puzzles / 22 students = 3.636363...

Rounding to the nearest tenth, one student would complete approximately 3.6 puzzles.

The recipe uses ½ c butter, 4 tablespoons kernels, and 1 tsp salt. If you use 10 tbs kernels, how much butter will you need?

If the recipe calls for 4 tablespoons of kernels and you decide to use 10 tablespoons instead, we can determine the ratio between the amount of kernels used and the amount of butter needed.

The given ratio is 4 tablespoons of kernels to ½ cup of butter.

To find out how much butter is needed for 10 tablespoons of kernels, we can set up a proportion:

4 tablespoons of kernels / ½ cup of butter = 10 tablespoons of kernels / x (amount of butter needed)

Cross-multiplying, we get:

4 * x = 10 * ½

4x = 5

Dividing both sides by 4, we find:

x = 5 / 4

Simplifying, x = 1.25

Therefore, if you use 10 tablespoons of kernels, you will need 1.25 cups of butter.

You buy a bench that is $359.98. Sales tax is 7.25%. What is the total cost? (hundredth)

To find the total cost of the bench, we need to add the sales tax to the original price.

First, let's calculate the sales tax amount by multiplying the original price ($359.98) by the sales tax rate (7.25% or 0.0725):

Sales tax amount = $359.98 * 0.0725 = $26.09

Now, we can find the total cost by adding the sales tax amount to the original price:

Total cost = $359.98 + $26.09 = $386.07

Therefore, the total cost of the bench, including sales tax, is $386.07.

A real 3cm bug is drawn to be 10cm in a picture. What scale factor was used?

To find the scale factor used in the drawing, we can divide the size of the drawing (10cm) by the size of the actual bug (3cm):

Scale factor = Size of drawing / Size of actual object
= 10cm / 3cm
≈ 3.33

Therefore, the scale factor used in the drawing is approximately 3.33.

Jill estimated a room to be 18ft tall. It was actually only 15 ft tall. What is her percentage of error? (tenth)