Algebra Test Help

[schrummy 10+ year member]

he said cheaper and i know that feed companies sell some bags like that.

.098 cents per pound. because when we buy them, we buy 100s at a time.

 

[wu36ca 10+ year member]

#2 is c

 

[Unfortunate 10+ year member]

10 more mins of class left. Last two questions

I appreciate all the help.

 

[wu36ca 10+ year member]

You have one question left //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

 

[wu36ca 10+ year member]

The jest one is a.

 

[Unfortunate 10+ year member]

You have one question left //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

yeah the last one listed.

 

[wu36ca 10+ year member]

yeah the last one listed.

Got your answer in the post above.

 

[KyleBechtold 5,000+ posts]

the money one is 7500

 

[KyleBechtold 5,000+ posts]

the jet one is a he said it already

 

[blackmax 10+ year member]

mixture equation formula is

Ax + B(C-x)=Total weight © x Rate per pound

.28x + .78(21-x)=21*.42

.28x + 16.38 - .78x = 8.82

-.5x=-7.56

x=15.12

 

[Unfortunate 10+ year member]

ok, coo.

got it!

cya

 

[DePratt 10+ year member]

i'm taking this test right now but i'm too lazy to figure out the word problems so if any of you geniuses are bored throw me some answers.


helen weller invested $15,000 in an account that pays 10% simple interest. how much additional money must be invested in an account that pays 13% simple interest so that the total interest is equal to the interest on the two investments at the rate of 11%?

a. $11,000

b. $15,000

c. $7,500

d. $12,000

marty leaves the airport in his private plane and flies due east at 186mph. Two hours later, a jet leaves the same airport and flies due east at 434 mph. When wil the jet ovetake marty's plane?

a. 1.5 hours after the jet leave sthe airport

b. 0.43 hours after the jet leaves the airport

c. 3.5 hours after the "

d. 2.33 "

THNXXXX

..

 

[blackmax 10+ year member]

The formula for the coin question is

.25Q + .05N = 4.45

q + n = 25 OR q=25-n

.25(25-n) + .05n = 4.45

6.25-.25n+.05n=4.45

-.2n=-1.8

n=9