How do I solve this problem?4x+7y=42 when X=9

28 29 42=99 is it communtative or associative

What is 15 litres in gallons

5% converted into a decimal

Mr Jenkins bought the same number of blue pencils as green pencils. Blue pencils come in packs of 5, and green pencils come in packs of 4. What is the least number of blue or green pencils Mr Jenkins could have bought.

The plot has an area of 78,125 square meters and is 125 meters wide. What is the length of the plot?

Deanna bought the poster shown below for her wall. Note: Figure not drawn to scale If a = 12 cm, b = 29 cm, c = 15 cm, and d = 19 cm, what is the area of the poster? 459 cm2 409 cm2 490.5 cm2 633 cm2

Solve. A recent advertisement claimed that 2 out of every 5 doctors recommend a certain herbal supplement to increase energy levels.

What is 4 divided by 230

Over a period of five days, the average time of a commuter train trip from one town to the city was 77 minutes. One trip was 71 minutes, another was 74, and two each were 78 minutes. How many minutes long was the fifth trip?

A 4 pound package of peanuts is divided into 1/4 pound packages. How many 1/4 pound packages will there be?