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April 19, 2014

Homework Help: math

Posted by Sammy, !!!Please Answer!! on Wednesday, December 5, 2012 at 3:48pm.

Multiple Choice
1.
Write the following ratio in simplest form: 32 min : 36 min (1 point)

8 : 9
8 : 36
32 : 9
128 : 144

2.
In a sports equipment locker, there are 81 balls and 45 baseball mitts. Write the ratio of balls to baseball mitts in simplest form. (1 point)

9 : 5
10 : 18
10 : 5
9 : 18

3.
The price of 10 ounces of crackers is $3.00. What is the unit price? Round your answer to the nearest cent. (1 point)

$0.15 per ounce
$0.30 per ounce
$0.60 per ounce
$0.90 per ounce

4.
Find the unit rate for the situation.

360 km in 6 h (1 point)

60 km/h
120 km/h
62 km/h
61 km/h

Solve the proportion. Round to the nearest hundredth, where necessary.
5.
nine over four equals question mark over twelve (1 point)

54
36
45
27

6.
twenty-seven-ninetieths equals three over question mark (1 point)

3
10
9
27

7.
thirty-two over question mark equals twenty-twenty-fifths (1 point)

37
16
26
40

8.
Use cross products to determine which of the following pairs of ratios cannot form a proportion. (1 point)

one-third and three-ninths
two-thirds and four-ninths
two-thirds and four-sixths
one-third and two-sixths

9.
The triangles below are similar. Find the value of x.
triangles
(1 point)

9
8
10.5
11

10.
Triangle A and triangle B are similar. The perimeter of triangle A is 15 m and the perimeter of triangle B is 30 m. What is the scale factor of triangle B to triangle A? (1 point)

1 : 2
2 : 1
3 : 2
4 : 3

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