What might cause a percentage of error if a human is doing the measuring? Check all that apply.

Mason counted an average of 18 birds at his bird feeder each day for 20 days. Rosa counted an averge of 21 birds at her bird feeder each day for 16 days. How many more birds did Mson count at his feeder than Rosa couted at hers?

4.16*10^-5 divided by 8.0*10^-4 in scientific notation

The perimeter of a rectangle is 82 feet. Find the length and width of the rectangle is the length is 7 feet more than the width

Of the six graders in a school, 4/5 play at least one sport. Of those, 2/3 play on a team. What fraction of the six graders play a sport on a team

At an art auction, Giannina's painting sold for over $300. Write an inequality that describes P, the price of Geannina's painting in dollars.

K (n) = 10n-19 find k (-7)

1. A town with a population of 5,000 grows 3% per year. Find the population at the end of 10 years. LOTU

The center of a circle is located at c (3,-13). the x-axis is tangent to the circle at (3,0). find the equation of the circle.

Add. 4/5 + 3-1/10 Enter the sum in the box as a mixed number in simplest form.

Directions: Use a proportion to solve each word prob necessary. 1. The ratio of adults to children in a movie theater is 7:2. If there are 26 children in the theater, how many adults are there?