MATHEMATICS MIDDLE SCHOOL

Yvonne bought 4 7/8 yards of material to make a dress.If Yvonne wanted to make 3 dresses that use 4 7/8 yd of fabric each, explain how she could use estimation to make sure she has enough fabric for all of them.

Answers

Answer 1

Answer:

Answer:

15 yards.

Step-by-step explanation:

Each dress need fabric = $4(7)/(8)$ yards

= $(39)/(8)$ yards

She needs fabric to make 3 dresses = $(39)/(8)$ × 3

= $(117)/(8)$

= $14(5)/(8)$ yards

She will need $14(5)/(8)$ yards or 14.63 ≈ 15 yards of fabric for all of 3 dresses.

Answer 2

Answer: She can round 4 7/8 as 5 yards of material. and since she's making three, multiply 5 yards by 3 dresses. that equals 15 yards of material needed.

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Can the sum of two mixed numbers be equal to 2? explain why or why not.

Answers

no it cannot because a mixed # for example would look like this 2 3/5 it will need a whole number and a fraction
The reason why I say NO is because you can only have 1 mixed number in 2 and that would be 1 1/2 (1 1/2 + 1/2 = 2) And when you try again your numbers will be 1 and 1. So NO, you cannot have to mixed numbers in the number 2

What is 245.3 divided by 5=?

Answers

To do this without a calculator:

5 goes into 2 0 times.
5 goes into 24 4 times with a remainder of 4.
5 goes into 45 9 times
5 goes into 3 0 times
5 goes into 30 6 times

the answer is 49.06

look up long division for more info
049.06
5 ) 245.3
20
45
45
030
30

49.06
5 ) 245.30
-20
45
-45
03
30
-30
0

When you divide into a decimal, just ignore the decimal point doing your work at the bottom. If you run out of decimal places, just add a 0 to the end.

5 doesn't go into 2, so skip to the next part.
5 goes into 24 a total of 4 times.
4 times 5 is 20. 24 minus 20 is 4. Bring down the 5.
5 goes into 45 a total of 9 times.
9 times 5 is 45. 45 minus 45 is 0. Bring down the 3.
Bring up the decimal point.
5 doesn't go into 3, so put up a 0.
0 times 5 is 0. 3 minus 0 is 3. Add a zero to the end and bring it down.
5 goes into 30 a total of 6 times.
6 times 5 is 30. 30 minus 30 is 0. We're done!

Your answer is 49.06.

Dan drove 246 miles using 9 gallons of gas. At this rate how many gallons of gas would he need to drive 410 miles ?

Answers

He will need to use 15 gallons of gas.

To solve this problem, we can write and solve a proportion.

It would be:

246 / 9 = 410 / x

If you cross multiply and divide, you will get that x = 15.

A jar contains jelly beans that are red, yellow, blue, and purple. Several people reach in and grab handfuls of jelly beans, then collectively tally the number of each color: 15 red, 20 yellow, 12 blue, and 8 purple. If someone pulls out 22 jelly beans, about how many would you expect to be yellow?

Answers

1) calculate percentage of yellow jelly beans from original capture
20 / (15+20+12+8) = 4/11 or 36.364%
2) apply percentage to new amount
4/11 *22 = 8 beans

Answer:

the answer is 8.

trust me

A library has raised $4508. The library wants to buy as many books as it can. Each book cost $ 17. How many books can it buy