There are 4 boys for every 10 students in Ms. Day's math class. If there are 30 girls in her class, how many boys are there? (with explanation)

How many lines of reflectional symmetry does the regular hexagon have?

Diane is 3 years older than twice her sister Samantha's age. If Samantha's age is represented by s, which expression represents Diane's age? A. 2 + 3 Cs-3 B. 35+2 D. 5+3

P9. Consider the discussion in Section 1.3 of packet switching versus circuit switching in which an example is provided with a 1 Mbps link.

Use the fact that the sum of the angles in a triangle is 180 degrees for this question. Two angles of a triangle have the same measure and the third one is 24 degrees greater than the measure of each of the other two.

Triangle lmn is similar to triangle nop. both are right triangles. which statements about the two triangles must be true? choose all answers that are correct. a. sides ln and np have the same slope. b. sides ln and np are congruent. c.

What is the square root of 2

How many times does 1/2 go into 1 1/4

Perimeter is a square clock is 16 6/9 inches. Perimeter of a rectangular clock is 16 16/18 inches. Write an inequality comparing the two perimeters.

About 6/8 of the earth's suface is covered by water. About what fraction of earth's surface is not covered by water?

X^2 - 7 = 60 How do I solve the equation?