There are 77 students in the student council. The ratio of girls to boys is 7:4. How many girls are in the student council?

a 36 inch board is to be cut into three pieces so that the piece is twice as long as the first piece and the third piece is 3 times as long as the first piece. if x represents the length of the first piece, find the lengths of all three pieces.

What is the mean absolute deviation for the data shown in the stem-and-leaf-plot? A. 6 B. 9.3 C. 9.7 D. 19

10,24,21 determine whether the triangle is acute, right, obtuse, or not a triangle

Combine like terms to create an equivalent expression. 0.25k+1.5-k-3.5

Factor 12 out of 12z+9

According to the Bohr model, the radius of a hydrogen atom is approximately 5.29 * 10-11 meters. What is this measurement written in standard form?

A wise man once said, 400 reduced by twice my age is 232. What is his age?

What is the squar root of 21

A garden is in the shape of a circle with a radius of 10 feet. Edging is placed around the garden. How much edging, in feet, is needed to go around the garden. Round to the nearest whole number.

Is 28.431 greater than 28.419?