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Mathematics 8 Online
OpenStudy (anonymous):

Find each unit rate. $3.00 for 150 golf tees a. $0.02 per golf tee c. $50.00 per golf tee b. $153.00 per golf tee d. $0.2 per golf tee

OpenStudy (anonymous):

Do you know what a unit rate is?

OpenStudy (anonymous):

no lol

OpenStudy (anonymous):

The average weight of a mature human brain is approximately 1400 grams. What is the equivalent weight in pounds? Use the conversion equivalency 1 kilograms (kg) = 1000 grams (g) and 2.20 pounds (lb) = 1 kg. a. 5.11 lb b. 3.08 lb c. 636 lb d. 25.8 lb

OpenStudy (anonymous):

Ok lets do an Ex.

OpenStudy (anonymous):

ok i got that one but this is the new one

OpenStudy (anonymous):

What is MPH

OpenStudy (anonymous):

ok let me look at it

OpenStudy (anonymous):

The average weight of a mature human brain is approximately 1400 grams. What is the equivalent weight in pounds? Use the conversion equivalency 1 kilograms (kg) = 1000 grams (g) and 2.20 pounds (lb) = 1 kg. a. 5.11 lb b. 3.08 lb c. 636 lb d. 25.8 lb

OpenStudy (anonymous):

So what you have to do is convert grams to lbs

OpenStudy (anonymous):

So what do you think we do 1st?

OpenStudy (anonymous):

i dont know im lost with this question

OpenStudy (anonymous):

Ok so 1st we need to convert the grams to kilograms so how we do that is by doing \[\frac{ 1400g }{ 1000kg }\]

OpenStudy (anonymous):

So plug that into your calculator and tell me what you get

OpenStudy (anonymous):

1.4

OpenStudy (anonymous):

?

OpenStudy (anonymous):

i do 1400 / 1000 so it is 1.4 is what i got

OpenStudy (anonymous):

Ok now we need to convert 1.4Kg to lbs

OpenStudy (anonymous):

we do this by doing \[\frac{ 1.4kg }{ 2.2lbs }\]

OpenStudy (anonymous):

Tell me what you get

OpenStudy (anonymous):

Wait

OpenStudy (anonymous):

thats wrong hold on

OpenStudy (anonymous):

i think we are doing it wrong

OpenStudy (anonymous):

1 sec

OpenStudy (anonymous):

The average weight of a mature human brain is approximately 1400 grams. What is the equivalent weight in pounds? Use the conversion equivalency 1 kilograms (kg) = 1000 grams (g) and 2.20 pounds (lb) = 1 kg. a. 5.11 lb b. 3.08 lb c. 636 lb d. 25.8 lb

OpenStudy (anonymous):

you do 1.4•2.2

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

3.08

OpenStudy (anonymous):

Then that should be your answer

OpenStudy (anonymous):

Yep thats right

OpenStudy (anonymous):

ok i got you another one

OpenStudy (anonymous):

?

OpenStudy (anonymous):

A bag of fertilizer covers 2500 square feet of lawn. Find how many bags of fertilizer should be purchased to cover a rectangular lawn 410 feet by 65 feet. a. 11 bags c. 1066 bags b. 10 bags d. 107 bags

OpenStudy (anonymous):

Ok 1st find the area of the lawn

OpenStudy (anonymous):

i know its 2500 square feet

OpenStudy (anonymous):

Of the lawn

OpenStudy (anonymous):

do 410•65

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

26,650???

OpenStudy (anonymous):

Yes

OpenStudy (anonymous):

Now you divide that by 2500

OpenStudy (anonymous):

and you will have your answer

OpenStudy (anonymous):

10.66 its not a choice

OpenStudy (anonymous):

A bag of fertilizer covers 2500 square feet of lawn. Find how many bags of fertilizer should be purchased to cover a rectangular lawn 410 feet by 65 feet. a. 11 bags c. 1066 bags b. 10 bags d. 107 bags

OpenStudy (anonymous):

You round up then because you need at least 1 more bag

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

So your answer would be A

OpenStudy (anonymous):

The length of a football playing field is 100 yards between the opposing goal lines. What is the length of the football field in feet? Use the conversion equivalency of 3 feet = 1 yard. a. 33.3 feet b. 300 feet c. 200 feet d. 600 feet

OpenStudy (anonymous):

multiply 100yds•3ft

OpenStudy (anonymous):

300

OpenStudy (anonymous):

Yes

OpenStudy (anonymous):

Yearly homeowner property taxes are figured at a rate of $1.15 tax for every $100 of home value. Find the property taxes on a townhouse valued at $73,000. a. $ 839.50 c. $ 840.65 b. $ 83.95 d. $ 731.15

OpenStudy (anonymous):

1st divide 73000 by 100

OpenStudy (anonymous):

730

OpenStudy (anonymous):

multiply that by 1.15

OpenStudy (anonymous):

and you have your answer

OpenStudy (anonymous):

839.50

OpenStudy (anonymous):

Yes

OpenStudy (anonymous):

The ratio of a quarterback's completed passes to attempted passes is 6 to 7. If he attempted 21 passes, find how many passes he completed. a. 7 passes c. 18 passes b. 25 passes d. 3 passes

OpenStudy (anonymous):

Do 6/7

OpenStudy (anonymous):

then multiply that by 21

OpenStudy (anonymous):

@joey1234567

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