Write a ratio for the situation in three ways comparing the first quantity to the second quantity
A zoo has 14 monkeys and 18 chimpanzees
14:18
14 to 18
14/18
14/18
7/9
7:9
7 to 9
I don't know anything about ratios in school I get lost and everybody can do it but me a I get bullied to so I mean how can I focus with all that going through my mind and do my work?????????????????????????/
is he right
kumon
To write a ratio comparing the number of monkeys to the number of chimpanzees at the zoo, you can use the following formats:
1. As a fraction: The ratio of monkeys to chimpanzees can be written as 14/18.
2. As a colon: The ratio can also be expressed as 14:18.
3. In words: Lastly, the ratio can be written as "14 monkeys to 18 chimpanzees".
These three ways provide different representations of the same ratio.
1. Write a ratio for the situation in three ways, comparing the first quantity to the second quantity.
A zoo has 19 monkeys and 10 chimpanzees.
(1 point)
19 to 10, 19:10,
10 to 29, 10:29,
19 to 29, 19:29,
10 to 19, 10:19,
2. Write a ratio for the situation in three ways, comparing the first quantity to the second quantity.
In Union City, about one in every three homes has two cars.
(1 point)
5 to 2, 5:2,
1 to 3, 1:3,
5 to 3, 5:3,
3 to 2, 3:2,
3. Write three ratios equal to .
(1 point)
, ,
, ,
, ,
, ,
4 J k ld 36 ti k t t th h l f i d J ld 15 ti k t Wh t i th ti i i l t (1 i t)
4. Jake sold 36 tickets to the school fair, and Jeanne sold 15 tickets. What is the ratio, in simplest
form, of the number of tickets Jeanne sold to the number of tickets Jake sold?
(1 point)
5. Write a unit rate for the situation. Round to the nearest hundredth if necessary.
traveling 426 miles in 7 hours
(1 point)
85.2 miles/hour
71 miles/hour
0.0426 miles/hour
60.86 miles/hour
6. Population density is the number of people per unit of area. What is the population density of a
state that has 1,329,192 people in 35,385 square miles? Round to the nearest whole number.
(1 point)
38 people per square mile
3,756 people per square mile
376 people per square mile
380 people per square mile
7. Use the unit price to find the total price.
9 gallons at $1.92 per gallon
(1 point)
$17.21
$18.18
$17.28
$18.38
8. Fresh Side Grocery sells 7 bagels for $4.41. Value Mart sells 5 bagels for $3.60. How do the
unit rates compare?
(1 point)
The bagels at Fresh Side Grocery are $0.09 less expensive than the bagels at Value Mart.
The bagels at Fresh Side Grocery are $0.09 more expensive than the bagels at Value Mart.
The bagels at Fresh Side Grocery are $0.07 less expensive than the bagels at Value Mart.
The bagels at Fresh Side Grocery are $0.07 more expensive than the bagels at Value Mart.
9. Which is the best buy? (1 point)
$10.88 for 7 cans of tuna
$11.55 for 6 cans of tuna
$17.25 for 9 cans of tuna
$15.31 for 8 cans of tuna
10. Determine which ratio forms a proportion with by writing the ratio in simplest form. (1 point)
11. Determine which ratio forms a proportion with by finding a common multiplier.
(1 point)
12. Determine which ratio forms a proportion with by using cross products. (1
,
,
14. Drinking 6 fluid ounces of milk provides 202.5 milligrams of calcium. How many fluid ounces
of milk are required to provide 52.5 milligrams of calcium? Round to the nearest tenth.
(1 point)
2.1 fluid ounces
2.3 fluid ounces
1.8 fluid ounces
1.6 fluid ounces
15. A machine takes 4.2 hours to make 7 parts. At that rate, how many parts can the machine make
in 28.8 hours?
(1 point)
48 parts
41 parts
172 parts
17 parts
16. In a survey, four out of seven people named blue as their favorite color. One out of three
named red. If 1,092 people were included in the survey, how many named neither blue nor red
as their favorite color?
(1 point)
192 people
104 people
148 people
212 people
Solve the proportion using cross products. Round to the nearest hundredth if necessary.
17. (1 point)
28
12
9
18
18. (1 point)
12.26
16.35
4.13
9.30
Are the figures below similar? Why or why not?
19. Determine whether the triangles below are similar. (1 point)
yes, because the corresponding angles are congruent and the corresponding sides are proportional
no, because the corresponding angles are not congruent and the corresponding sides are not proportional
no, because the corresponding sides are proportional but the corresponding angles are not congruent
no, because the corresponding angles are congruent but the corresponding sides are not proportional
20. The triangles below are similar. Find the value of x. (1 point)
14
12.5
13.5
12
21. A 12-foot basketball hoop has a shadow 9.6 ft long. How long is the shadow of a 6-ft adult
standing next to the basketball hoop? Note: Diagram is not to scale.
(1 point)
3.6 ft
4.8 ft
4 ft
2.4 ft
22. In the scale drawing below, each side is 1.9 cm long. Use the scale factor shown. What is the
perimeter of the actual object?
(1 point)
12.35 m
52.25 m
42 m
61.75 m
23. Los Angeles is about 385 miles from San Francisco. How far apart would the cities be on a
map with a scale of 1 in. = 25 mi? If necessary, round to the nearest hundredth.
(1 point)
15.4 in.
16.04 in.
15.65 in.
14.4 in
24. Two towns that are 31.5 km apart are 3 cm apart on a map. What is the scale of the map? (1 point)
1 cm = 29.5 km
1 cm = 9.5 km
1 cm = 10.5 km
1 cm = 15.5 km
25. WorkPad
Note: For questions 25–29, remember to show all of the steps that you use to solve the
problem. Be sure to use the text box where the question mark (?) first appears to show your
mathematical work. You can use the comments field to explain your work. Your teacher will
review each step of your response to ensure you receive proper credit for your answer.
A package of spaghetti weighs 266 grams. How many ounces does the package weigh? 1 oz
28 g
(3 points)
26.
a. Show that the ratios and form a proportion by finding a common multiplier.
b. Show that the ratios in part (a) are equal by writing them in simplest form.
(3 points)