What number is a factor of 20 but not a multiple of 5

Find the exact value of the given expression using a sum or difference formula. 1) sin345° 2) cos (11π) / 12 ... ?

8.8 x 10^7 + 3.1 x 10^8 in scientific notation

A group of 100 students were asked if they study French or Spanish in school. The results are shown in this two-way table. Which statements are correct? Check all that apply. 5 students study both French and Spanish. 63 students study French.

The table below shows the relationship between the number of parents in a household and the number of children

What is the probability of drawing a jack or a black card from a 52-card deck?

A country population in 1993 was 72 million. In 1996 it was 76 million

X^2+10x+c what the value of c?

What is the answer to X^4 - 3x^2+2

How to prove a geometric sequence

A building is 2 ft from an 11-ft fence that surrounds the property. A worker wants to wash a window in the building 16 ft from the ground. He plans to place a ladder over the fence so it rests against the building.