Which equations support the fact that rational numbers are closed under addition? Select each correct answer.

3√5+√5=4√5

√10 + (-√10) = 0

1/2 + 0.5=1

3√16 + 3√16=6√16

Find the area of a parallelogram

What is the length of the unknown leg in the right triangle? 25 m 20 m O v5 m O 5m O 145 m 15 m

Divide - 2x3-5x2+4x+2 by x+2

Shaniqua can read at a speed of 50 pages per hour. how many pages does she read on 1.5 hours?

Elliott was trying to factor 6x^2-18 he found that the greatest common factor of these terms was 6 and made an area model What's the width of the area model

Lea made two candles in the shape of right rectangular prisms. The first candle is 15 cm high, 8 cm long, and 8 cm wide. The second candle is 5 cm taller but has the same length and width.

Let ABCD and EFGH be two quadriaterals such that ABCD ~ EFGH If AB = 15cm, EF = 18cm and the permeter of ABCD is 40cm, find the permeter of EFGH.

Royce walks 3/4 mile to school and 3/4 mile home each day. In how many days will he have walked 3 miles

Scottish researchers compared rates of depression between 94 undergraduates who regularly kept diaries and 41 students who did not. They found that people who kept diaries were more likely to have depression than those who did not.

What is the best estimate for the sum of 12.547 + 83.919