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Golden ratio wikipedia, lookup

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```Name _______________________________________ Date __________________ Score _________________
Homework #14 (due Thursday 12.4.14)
transfer the correct answer to the correct number.
1.
1st ________2nd _________3rd__________
2.
1st ________2nd _________3rd__________
3.
13.
sugar
3
milk
2
6
18
8
20
1st ________2nd _________3rd__________
14.__________________________
4.
1st ________2nd _________3rd__________
__________________________
5.
1st ________2nd _________3rd__________
__________________________
6. a__________b________
__________________________
7. ____________________
__________________________
8. ____________________
__________________________
9. __________
15._________
10.__________
16._________
11.__________
17.a.__________b.__________
12.a_______b.________c._______
c. Café A:____________
c. Café B:_____________
LESSON
Ratios
7-1
Practice and Problem Solving: A/B
The number of animals at the zoo is shown in the table. Write each
ratio in three different ways.
1. lions to elephants
Animals in the Zoo
1st __________2nd ___________3rd___________
2. giraffes to otters
1st __________2nd ___________3rd___________
3. lions to seals
Elephants
12
Giraffes
8
Lions
9
Seals
10
Otters
16
1st __________2nd ___________3rd___________
4. seals to elephants
1st __________2nd ___________3rd___________
5. elephants to lions
1st __________2nd ___________3rd___________
6. The ratio of clown fish to angel fish at a pet store is 5:4. The ratio of
angel fish to goldfish is 4:3. There are 60 clown fish at the pet store.
a. How many angel fish are there? _________________
b. How many goldfish are there? _________________
Find three ratios equivalent to the ratio described in each situation.
Use a ratio table to help find the equivalent ratios.
7. The ratio of cats to dogs in a park is 3 to 4. _________________
8. The ratio of rainy days to sunny days is 5 . _________________
7
Original content Copyright © by Houghton Mifflin Harcourt. Additions and changes to the original content are the responsibility of the instructor.
128
LESSON
7-2
Rates
Practice and Problem Solving: A/B
Find the unit (one) rate. Use a ratio to help you determine the unit
rate.
9. David drove 135 miles in 3 hours. ___________________________
10. Three medium apples have about 285 calories.
___________________________
11. A 13-ounce package of pistachios costs \$5.98.
___________________________
Find the unit rate to the nearest cent per ounce. Compare.
12. a. A 24-ounce box of cornflakes costs \$4.56. ___________________________
b. A 36-ounce box of cornflakes costs \$5.76. ___________________________
c. Which is the better buy? ___________________________
Original content Copyright © by Houghton Mifflin Harcourt. Additions and changes to the original content are the responsibility of the instructor.
129
Using Ratios and Rates to Solve Problems
LESSON
7-3
Practice and Problem Solving: A/B
Solve using ratios.
13. Mark is using the ratio of 3 tablespoons of sugar to 2 tablespoons of
milk in a recipe. Complete the table to show equivalent ratios if Mark
decides to increase the recipe.
sugar
3
milk
2
6
18
8
20
14. A school cafeteria makes cheese sauce for macaroni using 15 cups of
Swiss cheese and 20 cups of cheddar cheese. Perry tries to make the
sauce for a family party using 5 cups of Swiss and 7 cups of cheddar.
Is Perry using the correct ratio? Explain. ___________________________
________________________________________________________________________________________
15. The chess club members bought 6 tickets to a tournament for \$15.
How much would they have paid if all 8 members wanted to go?
_________________
16. The Khan’s car averages 22 miles per gallon of gas. Predict how far
they can travel on 5 gallons of gas. _________________
17. Cafe A offers 2 free bottled waters or juices for every 20 purchased.
Cafe B offers 3 free bottled waters or juices for every 25 purchased.
a. What is Cafe A’s ratio of free drinks to purchased drinks?
_________________
b. What is Cafe B’s ratio of free drinks to purchased drinks?
_________________
c. If you purchased 50 drinks at each café, how many free drinks
would you get?
_____________________________________
Original content Copyright © by Houghton Mifflin Harcourt. Additions and changes to the original content are the responsibility of the instructor.
130
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