Math Maintenance Lesson 87

Color the spinner: 2 red, 2 green, 2 blue, and 2 yellow. What is the probability of the spinner landing on any color other than yellow?

• $\frac{2}{4}$

• $\frac{2}{8}$

• $\frac{8}{8}$

In an addition equation, when one addend is positive and the other is negative, how do you determine whether the sum will be positive or negative?

• Give them the largest number sign

• Give them the smallest number sign

• Give them that sign

Find the values of a, b, and c.

• a: 144

  b: 144

  c: 144

• a: 36

  b: 144

  c: 36

• a: 36

  b: 180

  c: 144

Vivien tried cliff diving while on vacation. If she started her dive at 2 feet above sea level and dove 6 feet, what was her final elevation?

• -4

• 4

• -6

Find the radius of a circle that has an area of 379.94  $mm^2$  

• 10

• 11

• 12

An equilateral triangle has a perimeter of 6n + 15. Find the length of each side.

• 6n + 15

• 2n + 5

• 18n + 45

Lizzy dropped 12 seconds in her 100 m backstroke over the last 6 races. What is the average time that was dropped each race?

• 42 seconds

• 2 seconds

• 10 seconds

Could the side lengths: 7cm, 3.5cm, and 4.5 cm, be used to make a triangle?

(Reminder: two smallest sides sum must be larger than the third side)

• Yes

• No

Which type of food can the researcher infer is most favored in the population?

• Italian

• Mexican

• American