Uma urna contem 7 bolas brancas, 5 bolas pretas e 4 bolas vermelhas. qual a probalidade de retirarmos, ao acaso, uma bola preta?

What is 323 degrees in radians

Jared is placing chairs around a rectangular stage. the stage is 10 feet long and 22 feet wide. He wants to put a chair at each corner and every 2 feet along the sides. how many chairs will Jared need for his stage?

In converting 7.5 pounds to ounces, write in plural form what do they mean when they say plural form?

S is inversely proportional to t. When s = 0.8, t = 3 Work out s when t = 1.2

What effect does a in ax^2 have on a graph of a porabola

Last year, Melanie drove 1,200 miles on vacation, 8,850 miles to and from work, and 5,600 miles doing other activities. How many miles did Melanie drive in all? Which clue word (s) tell you to add?

Find the smallest perfect square which is divisible by 1930.

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 also have cat as a pet. If there are 45 students in her class, how many have both a dog and a cat as pets?

Find the simple interest earned after 8 years on $975 at an interest rate of 6%

If a square has a perimeter of 40 yards, what is the length of one side of the square?