Mary brother is five years younger than 3 times her age. the sum of their ages 39. how old is mary

The table shows the heights and weights of a few students in a class. Height (inches) Weight (pounds) 58 122 59 128 60 126 62 133 63 145 64 136 66 144 68 150 70 152 Complete the following sentences based on your observations.

What is the median of the following numbers? 8, 1, 2, 6, 1, 4

four men working together can create a trench in 42 days. they begin the job but one man works only half days. How long will it take to complete the trench?

A Web music store offers two versions of a popular song. The size of the standard version is 2.4 megabytes (MB). The size of the high-quality version is 4.2 MB. Yesterday, there were 820 downloads of the song, for a total download size of 2454 MB.

Apply distributive property to produce an equivalent expression for 6 (7 e + 3)

Simplify | 4-9 | A) 13 B) 5 C) - 5 D) - 13

Plastic cups come in packages of twenty-four and straws come in packages of twenty. What's the smallest number of each that could be bought so that you had the same amount of cups and straws?

What is 12+2-8=6-12 = - 6 + 18

A ramp leading into a building makes a 15 degree angle with the ground. The end of the ramp is 10 feet from the base of the building. Approximately how long is the ramp? Round to the nearest tenth.

What is 7 hunderedths in simpilest form?