13. The red triangle shown is not

right-angled. Explain how you

know that the combined area

of squares A and B does not

equal the area of square C.

on

A cylinder has a height of 11 centimeters and its circle bases have a radius of 9 centimeters. Find the surface area of the cylinder.

144 = r (squared) 9 find the radius r

Becky has one piece of paper. She cuts the paper in half and then has two pieces. She cuts these in half to get four pieces. The process continues.

Twice the sum of a number and eight

An airplane started at 0 feet. It rose 21000 feet at takeoff. It then descended 4329 feet because of clouds. After the oncoming plane passed, it descended 8453 feet, at what altitude was the plane flying?

What is the equation in slope intercept form for (1,0). Slope 1

Where would you place 2.5 on the Venn diagram? A) integers B) natural numbers C) rational numbers D) irrational numbers

Which of the following microscopes has the highest resolution?

Mary throws a plastic disc to her friend. Her friend catches the disc six seconds after Mary throws it. The table shows the height of the disc at one-second intervals. A 2-column table with 7 rows.

Which expression is equivalent to the value 64? A) 34 B) 64 C) 6.4 x 102 D) 82