In Mrs. Hu's classroom, 4/5 of the students have a dog as a pet. Of the students who have a dog as a pet, 2/3 have a cat as a pet. If there are 45 students in her class, how many have both a dog and a cat as pets?

A disc has a diameter of 21 cm while a mini disc has a diameter of 14cm. Write the ratio of the mini disc diameter to the disc diameter.

What is - 4 4/25 into a decimal

The computer lab is replacing the broken computers with 13 wireless touchscreen devices. About what percent of the lab is wireless devices?

Two mechanics worked on a car. The first mechanic charged $65 per hour, and the second mechanic charged $105 per hour. The mechanics worked for a combined total of 35 hours, and together they charged a total of $2875.

If mP = 85°, which is a possible measure for Y? mY = 80° mY = 85° mY = 100° m Y = 180

Maria is standing next to a tree. The tree cast a shadow that is 5.4 ft long. The angle formed from the sun hitting the tree and Maria are the same. Marie is 5 ft tall. How tall is the tree?

0.0432 in scientific notation

The quotient of 40 and the difference of a number y and 16 and y = 20

Jenny goes to dance class every 6 days, karate class every 12 days, and to the library every 18 days. On December 1st she went to both classes and the library. On what date will she do both classes and go to the library?

The volume of a triangular prism with 5cm 7cm and 13 cm