Question

8a^7 81r^7
------ * ------ multiply and simplify
9r^4 64a

Answer 1

658a^7r^7 / 576ar^4

658a^6r^3 / 576. Simplifying, we have:

9a^6r^3 / 8 :]]

Answer 2

\[(9a^6r^3)/8\]

Answer 3

oops. There's something wrong with my answer. It should be

\[329a ^{6}r ^{3} / 288\]

Answer 4

bes]cause when I checked, i accidentally used 648 instead of 658. So, there you go.

Answer 5

are you any good at word problems

Answer 6

maybe. Why? LOL

Answer 7

i have a multipart one towards the bottom of the list thats been driving me nuts

Answer 8

Can you post the problem again?

Answer 9

1. The cost, in millions of dollars, to remove x % of pollution in a lake modeled by a. What is the cost to remove 75% of the pollutant? b. What is the cost to remove 90% of the pollutant? c. What is the cost to remove 99% of the pollutant? d. For what value is this equation undefined?

Answer 10

formula is c= 6000 ----- 200-2x

Answer 11

6000
-----
200-2x

Answer 12

Can you make your problem clear because I can't understand it. I think your statement is incomplete.

Answer 13

1. The cost, in millions of dollars, to remove x % of pollution in a lake modeled by
a. What is the cost to remove 75% of the pollutant?

b. What is the cost to remove 90% of the pollutant?

c. What is the cost to remove 99% of the pollutant?

d. For what value is this equation undefined?

e. Do the answers to sections a. through d. match your expectations? Explain why or why not.

Answer 14

the equation i gave above goes after modeled by in the problem

Answer 15

does that help any?

Answer 16

Wait. I'll think

Answer 17

a. 30 million

Answer 18

a. 30.08 million

b. 30.29 million

c. 30.30 million

Answer 19

d. If x% = 10000 % ? LOL.

Answer 20

Wait, in the question, does it literally mean that it should only be in the millions and not in the billions?

Answer 21

yeah

Answer 22

take the question for whats its worth lol

Answer 23

Oh. because I was thinking that if I do my other thought's idea (lol), i would get the better answer but I would get billions.

Answer 24

So that's that for a to d.

Answer 25

yeah and the question doesnt mention billions

Answer 26

Hahah. for e, i don't know what to answer. LOL

Answer 27

i answered it lol

Answer 28

Okay.

Answer 29

thats part 1 of the question lol

Answer 30

it has three total

Answer 31

huwat?
lol

Answer 32

Okay, bring on the other!

Answer 33

its a beast lol

Answer 34

2. Biologists want to set up a station to test alligators in the lake for West Nile Virus. Suppose that the costs for such a station are $2,500 for setup costs and $3.00 to administer each test.

a. Write an expression that gives the total cost to test x animals.

b. You can find the average cost per animal by dividing total costs by number of animals. Write the expression that gives the average cost per animal.

c. Find the average cost per animal for 10 animals, 100 animals, and 1,000 animals.

d. As the number of animals tested increases, what happens to the average cost to test the animals? Would the average cost ever fall below $3.00? If so, identify a value that supports your answer. If not, explain how you know.

e. How many animals should be tested for the average cost to be $5.00 per animal?

Answer 35

a. 2500 + 3x

b. (2500 + 3x)/x

c. 2530, 2800, 5500

d. as the number of animals tested increases, the average cost decreases. No because you're just averaging and when you include the cost for setup, the average cost just tells how much in one pet the setup value cost.

e. 1250 animals.

Answer 36

Does that satisfy you? :D

Answer 37

I'll leave you for a moment. I'll just do my homework.

Answer 38

thank you so much