Which of the following is a rational number?

A. square root 15

B. square root 16,

C. square root 21,

D. square root 22

The difference of a number and 48 is - 18. Create an equation, solve it, and then tell what that number is?

Sara packed 7 boxes of books. Each box had 13 mystery books and 15 science fiction books. How many more science fiction books than mystery books did Sara pack?

Write each fraction as a percent 13/50

The diagram can be represented by the equation 25=2+6x

A pole that is 3.2 m tall casts a shadow that is 1.45 m long. At the same time, a nearby building casts a shadow that is 36.5 m long. How tall is the building? Round your answer to the nearest meter.

Il padre di Robert è 4 volte più vecchio di Robert. Dopo 5 anni, il padre avrà tre volte più di Robert. Trova le loro età attuali.

Last Friday joe had $7. Over the weekend he received some money for a good report card. he now has $20. How much money did he receive.

Guys, I have a life question. So my BFF that i met in school (I had to switch schools) decided she was gonna quit a game that was our only communication. She said she is never gonna be on again and i'm sad because she NEVER responds to my texts.

Bill scores on his first four tests were 85, 90, 86 and 93. What will he have to score on his next test to obtain an average of atleast 90 for the term

Solve by elimination 4x+5y=15 6x-4y=11