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February 27, 2015

February 27, 2015

Posted by **Delilah** on Tuesday, October 30, 2012 at 8:36pm.

Write the following ratio in simplest form: 32 min:36 min

8:9

8:36

32:9

128:144

2.

Marie saved $51. On Wednesday, she spent $8 of her savings. What ratio represents the portion of her total savings that she still has left?

43:8

8:51

43:51

59:51

3.

The price of 8.4 ounces of crackers is $2.42. What is the unit price? Round your answer to the nearest cent.

$0.15 per ounce

$3.47 per ounce

$28.81 per ounce

$0.29 per ounce

4.

Jonah needs to purchase 30 juice packs for his class. While shopping, Jonah discovers the following prices for comparable juice packs. Which offers the best unit price?

15 packs for $3.95

5 packs for $2.20

20 packs for $6.20

10 packs for $3.20

5.

Solve the proportion. Where necessary, round to the nearest hundredth.

8/2 = x+3/4

13

1

7

16

6.

A dozen apples cost $2.55. At this rate, how much would 8 apples cost?

$20.40

$3.83

$0.21

$1.70

7.

Use cross products to determine which of the following pairs of ratios cannot form a proportion. (1 point)

1/3, 3/9

2/3, 4/9

2/3, 4/6

1/3, 2/6

8.

Solve the following proportion.

2/15 = 13/x

390

1.73

2.31

97.5

My answers:

1. 8:9

2. ?????

3. 0.29 per ounce

4. ????

5. 13

6. $1.70

7. 2/3, 4/9

8. 97.5

I desperately need help with 2 nd 4, can you explain how to do them please? And also, can you check the rest of my problems? Thanks!

- 7th grade math Ms. Sue please! -
**Ms. Sue**, Tuesday, October 30, 2012 at 10:29pm2.

Marie saved $51. On Wednesday, she spent $8 of her savings. What ratio represents the portion of her total savings that she still has left?

**43:51**

4.

Jonah needs to purchase 30 juice packs for his class. While shopping, Jonah discovers the following prices for comparable juice packs. Which offers the best unit price?

15 packs for $3.95 >>**Multiply each by 2**

5 packs for $2.20 >>**Multiply each by 6**

20 packs for $6.20 >>**Multiply each by 1.5**

10 packs for $3.20 >>**Multiply each by 3**

- 7th grade math Ms. Sue please! -
**This Girl**, Sunday, November 4, 2012 at 9:31pmSo was he right?

- 7th grade math Ms. Sue please! -
**This Girl**, Tuesday, November 13, 2012 at 5:51pmOr she

- math -
**lianna**, Saturday, October 26, 2013 at 12:28amoh my gosh i have the same questions are the answers right?! please be right i want to get a good score i got 2 out 5 in a test and my mom is going to be mad and the test has like 10 questions i need help.... this is number:

r

5.8/2=x+3/4

10. the scale factor two similar rectangles is 3. if the area of the smaller rectangle is 8 m^2, what is the area of the larger rectangle.

A.24m^2

B.192m^2

C.72m^2

D.108m^2

- 7th grade math Ms. Sue please! -
**lianna**, Saturday, October 26, 2013 at 12:29amwhat is #4?

- math -
**lianna**, Saturday, October 26, 2013 at 1:30amnevermind got #4 jsut need help on #5 and #10

- 7th grade math Ms. Sue please! -
**lianna**, Saturday, October 26, 2013 at 1:30amHELP!!!

- math -
**lianna**, Saturday, October 26, 2013 at 1:42amnow i need 9 ugh math is so hard!!!!

- 7th grade math Ms. Sue please! -
**katie**, Thursday, December 5, 2013 at 10:42amI need help with this too! Math is hard for me right now...

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