Simplify 81?

18

9

40.5

-18

Simplify 50?

10

5/2

25/2

50 (it can't be simplified anymore)

A rectangular photograph is 8 cm wide and 12 cm long. The photograph is enlarged by increasing the length and width by an equal amount in order to double its area. What are the dimensions of the new photograph? a. 12 cm by 16 cm c. 20 cm by 30 cm b.

Be a detective and solve this case: There are 53 bicycles in a room, and a man is dead on the floor next to them. Why was the man killed?

A regular pentagon has an apothem measuring 3 cm and a perimeter of 21.8 cm. What is the area of the pentagon, rounded to the nearest tenth?

What integer is equivalent to93/2

Greatest to least: 9.708, 9.087, 9.78

What is 1.74 divided by - 0.06

A researcher wanted to compare the final test scores of students who used two different types of study materials. The researchers randomly selected two samples of 20 students using each type of material

One half of the sum of 3 and q

Drag each equation show if it could be a correct first step to solving the equation. 4 (3+x) = 36.

What is the formula for combinations