Monday

December 22, 2014

December 22, 2014

Posted by **Lilly** on Monday, November 12, 2012 at 12:33pm.

The sides of a rectangle are increased by a scale factor of 4. The perimeter of the smaller rectangle is 20 cm. What is the perimeter of the larger rectangle? (1 point)

320 cm

80 cm

120 cm

60 cm

10.

A right triangle has an area of 13 m2. The dimensions of the triangle are increased by a scale factor of 3. What is the area of the new triangle? (1 point)

39 m2

169 m2

117 m2

142 m2

12.

The width of a picture is 20 cm. Using a color copier, you reduce the width of the picture to 5 cm. What is the scale factor of the dilation? (1 point)

5

1 over 5

4

1 over 4

13.

On a given blueprint, 1 inch = 16 feet. If the dimensions of the bedroom on the blueprint are 0.75 inches × 1.5 inches, what are its actual measurements? (1 point)

16 ft × 32 ft

12 ft × 24 ft

16 ft × 24 ft

12 ft × 32 ft

14.

Using the same scale factor, what are the blueprint dimensions for a room that is 20 feet x 28 feet? (1 point)

1.5 in. × 2.5 in.

1.25 in. × 2.25 in.

1.25 in. × 1.75 in.

1.5 in. × 1.75 in.

15.

The scale of a map is 1 in.:75 mi. How many actual miles does 0.85 inches represent? (1 point)

88.2 miles

63.75 miles

95.6 miles

4,781.3 miles

- algebra, HELP! -
**PsyDAG**, Monday, November 12, 2012 at 1:12pmWe do not do your homework for you. Although it might take more effort to do the work on your own, you will profit more from your effort. We will be happy to evaluate your work though.

- algebra, HELP! -
**Lilly**, Monday, November 12, 2012 at 2:06pm:(

- algebra, HELP! -
**Cathrin**, Sunday, December 2, 2012 at 1:15pmUmm well on #9 I think it's 80 because 4x20 =80.. am I correct?

- algebra, HELP! -
**yolo**, Monday, December 17, 2012 at 11:11amlol 420

- Algebra -
**Emily**, Friday, November 15, 2013 at 11:30pmIt says this site is homework help, why don't you evaluate it for her? She needs help!

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