What is the contrapositive to the statement "if it is a bird, then it is an animal"?

A pollster contacts 74 people in the 18-21 age bracket and finds that 38 of them respond and 36 refuse to respond. When 297 people in the 22-29 age bracket are contacted, 278 respond and 19 refuse to respond.

The leg of a right triangle is 3 units and the hypotenuse is 4 units. What is the length, in units, of the other leg of the triangle?

Estimate 512 divided by 5

Three times the sum of a number and 10 24

What is the vertex of the function 7x^2 - 28x-60? A. (2,-88) B. (3,56) C. (2,88) D. (3,-56)

Cuales de las expresiones son equivalentes a 2 (4f+2g) ?

Mari has a part time job. She earns $7 an hour. She makes at most $143.50 a week. What is the greatest number of hours she can work

What is the value of xin the figure below? In this diagram, ABD - CAD. A-16 B-8

Is the number prime or composite 39 and 47

Why should you place a cover slip over your specimen at a 45 degree angle when making a wet mount slide?