1.
Write the ratio in the simplest form.
50: 10
(1 point)
25: 5
10: 2
5: 1*
1: 5
2.
Solve the following proportion
x over 2 = 8 over 9 (1 point)
144
0.44
1.78*
36
3.
Sarah’s mother has a miniature village modeled after her home town. The model is 10 feet long and 7 feet wide. The actual village is 7 miles long. What is the village’s actual width? If necessary, round to the nearest tenth of a mile. (1 point)
4.9 miles*
10 miles
1 mile
0.7 mile
4.
Find the unit rate for 306 miles in 10 hours. (1 point)
0.03 miles/hour
30.6 miles/hour*
306 miles/hour
3,060 miles/hour
5.
In six months, 33.6 gallons were used. Find the unit rate. (1 point)
3.6 gallons/month
4.6 gallons/month
5.6 gallons/month*
6.6 gallons/month
6.
On a recent day, one U.S. dollar was worth 1.09 euros. If you were to exchange 157 euros on that day, how many U.S. dollars would you have received? (1 point)
$110.09
$144.04*
$155.91
$171.13
8.
Two ladders are leaning against a wall at the same angle, as shown. How long is the short ladder?
(1 point)
6 ft
15 ft
20 ft*
30 ft
9.
The sides of a square are increased by a scale factor of 6. The perimeter of the smaller square is 10 ft. What is the perimeter of the larger square? (1 point)
10 ft
40 ft* just a guess
60 ft
120 ft
10.
A right triangle has an area of 24 ft2. The dimensions of the triangle are increased by a scale factor of 6. What is the area of the new triangle? (1 point)
48 ft2
72 ft2
144 ft2*
864 ft2
11.
Figure A’B’C’D’ is a dilation of figure ABCD. Find the scale factor. Classify the dilation as an enlargement or a reduction.
(1 point)
Scale factor one-third; reduction
Scale factor one-fourth; reduction
Scale factor 3; enlargement*
Scale factor 4; enlargement
12.
The width of a poster board is 30 inches. Using scissors, you reduce the width of the poster board to 10 inches. What is the scale factor of the dilation? (1 point)
one-third*
one-tenth
3
10
13.
On a given blueprint, 1 inch = 30 feet. If the dimensions of a meeting room on the blueprint are 1.5 inches × 1.25 inches, what are its actual measurements? (1 point)
4.5 ft × 3.75 ft
20 ft × 24 ft
45 ft × 37.5 ft*
15 ft × 12.5 ft
14.
Using 1 inch = 15 feet as the scale factor, what are the blueprint dimensions of a room in a model house that is actually 30 feet × 45 feet? (1 point)
2 in. × 3 in.*
3 in. × 2 in.
2 in. × 2 in.
3 in. × 2 in.
15.
The scale of a map is 1 inch = 25 miles. How many miles does 1.25 inches represent? (1 point)
25 miles
31.25 miles*
62.5 miles
49.25 miles
Ms. Sue please help me. also * means my choice.
18 answers
9-12 I don't know.
All of your other answers are correct! Great!
add to the start connexus without the space and . j p g without the spaces
sides scale by 6, so since p=4s, 6(4s) = 6(10) = 60
#10.
a = bh/2, so
(6b)(6h)/2 = 36bh/2 = 36(24) = 864
#12.
correct, as long as the length is also reduced.
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2.c
3.A
4.b
5.c
6.b
8.c
9.b
10.c
11.c
12.A
13.c
14.A
15.b