sophiaroeloffs4348
30.11.2020 •
Mathematics
1.How many fluid ounces are in 9 And 1/2 cups? Write a proportion and solve.
2. About how many centimeters are in 70 inches? Write a proportion and solve.
3. Find the unit rate for 90% books to 10% magazines. Consider the unit rate to be the number of books per magazine. unit rate=
4. Find the unit rate for 60% water to 40% juice. Consider the unit rate to be the number of liters of water per 1 liter of juice. Unite rate=
5. Find the percentage of red balls and the percentage of green balls in the basket if the unit rate is 1 (Note: The unit rate is the number of red balls per one green ball.)
% red balls to ___%of green balls
Solved
Show answers
More tips
- A Auto and Moto Discovering the Leader: What is the Most Expensive Car in the World?...
- H Health and Medicine Hangover: How to Get Rid of It Quickly?...
- S Style and Beauty How to Choose the Right Fur Coat and Avoid Regrets?...
- C Computers and Internet How to Create a Folder on Your iPhone?...
- G Goods and services How to sew a ribbon: Tips for beginners...
- F Food and Cooking How to Make Mayonnaise at Home? Secrets of Homemade Mayonnaise...
- C Computers and Internet Which Phone is Best for Internet Surfing?...
- F Food and Cooking Everything You Need to Know About Pasta...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
Answers on questions: Mathematics
- M Mathematics The amount bryce earns babysitting in a month is represented by the equation a=10.5h. in the equation, a represents the total amount bryce earns. the number of hours he...
- M Mathematics Assume that a study of 500 randomly selected school bus routes showed that 482 arrived on time. Is it “unusual” for a school bus to arrive late? (Hint: an event is considered...
- M Mathematics True or False? A change in temperature from -13 degrees to 13 degrees results in a final value of zero...
- S Spanish What is a Blusa traditional...
- P Physics Deimos, a satellite of mars, has an average radius of 6300 m. if the gravitational force between deimos and a 3 kg rock at its surface is 2.5x10-2 n, what is the mass of...
Ответ:
to top
MATH REVIEW: USEFUL MATH FOR EVERYONE
SECTION 1.2. RATIOS AND PROPORTIONS
Ratios and Proportions
Algebraic Expressions
Exponents
Logarithms
Glossary and Links
back to Ratios, Page 1
A proportion is similar to a ratio, except that it indicates a part of a whole, and so the numerator arises from the denominator. For instance, a researcher might say that, for every ten students in the residence hall, five were women. Five over ten (5 / 10) is a proportion. Proportions must have all of the numbers in the same units, and are frequently written as fractions.
What happens when you want to write a proportion, but the numbers are given in different units? Suppose you were asked to write the proportion of 3 cups to 56 ounces (3 cups out of 56 ounces). You must write a proportion of either cups to cups (cups:cups) or ounces to ounces (ounces:ounces), so you will have to convert one of the numbers so that both numbers are expressed in the same unit of measurement. Let's convert cups to ounces so we can express the ratio as ounces:ounces. Since there are 8 ounces in one cup, 3 cups are equal to 24 ounces:
3 cups * 8 ounces/cup = 24 ounces
Now the two numbers 3 cups and 56 ounces can be written as the following ratio:
24 ounces to 56 ounces,
24:56,
or, now that the unit of measurement is the same, 24:56 can also be written as a proportion:
24/56
You may need to solve some problems involving ratios.
If you divided 36 into two parts in the ratio of 1:2 and one part is a and the other is b, you can find the value of a and b:
You know that
a+b = 36
And
a/b = 1/2
You can use these equations to solve for a and b, or you can use the following simple method:
Find out how many units are in 1 part of the ratio. To do this, divide the total by the number of parts.
Number of parts: 1 + 2 = 3.
Number of units in each part: 36/3 = 12.
Then, multiply the number of units in each part by the number of parts in each variable.
a = 1 * 12 = 12
b = 2 * 12 = 24
As an aside . . .
Percentages are so frequently used that we should spend a little time on them here. The powerful thing about percentages is that they all have the same denominator: 100. When two fractions have the same denominator, comparisions can be made very easily.
0.21 = 21% = 21 / 100
Step-by-step explanation:
Ответ:
0,16
Step-by-step explanation:
They have the same set of carsd, so to pick up dog cart has probability 0,4 for Lisa and for her sister.
The probability to both pick up the dog card is:
0,4*0,4=0,16