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Question 922954: I need help on steps for solving a system of equations in substituting, elimination,and graphing method for problem.
X+3y=-4
X+y=0
Thank you in advance for your help,
I tried to work the problem below
Y=-x+0
X+3(-x+0)=-4
X+-3+0=-4
-2x+0=4
(2,2)
Click here to see answer by jim_thompson5910(35256)  |
Question 923368: I need help on steps for solving a system of equations in substituting,elimination,and graphing method for problem
3x-y=7
Y++2x=8
Thank you in advance
I worked the problem
3x=(2x-8)=7
3x-2x+8=7
X+8=7x=-1
-8-2=-10
(-1,-10)
Click here to see answer by Alan3354(69443)  |
Question 923368: I need help on steps for solving a system of equations in substituting,elimination,and graphing method for problem
3x-y=7
Y++2x=8
Thank you in advance
I worked the problem
3x=(2x-8)=7
3x-2x+8=7
X+8=7x=-1
-8-2=-10
(-1,-10)
Click here to see answer by ewatrrr(24785)  |
Question 923482: Can you help me with this question please?
How many years will it take $5000 to grow to $8000 if the investment is at 6.5% and is compounded quarterly?
I used the compound interest formula
A=P(1+(r/n))^(nt)
and got the formula:
8000=5000(1+(.065/3))^3t
but I am not sure how to get the t alone...
could you divide both sides by 5000?
then it would be 8000/5000= (1+(.065/3))^3t
I am not sure...
Click here to see answer by jim_thompson5910(35256) |
Question 923863: You have $10,000.00 to invest, at 5% annually and you keep the money invested for 10 years. What will this amount grow to?
You will need $15,000.00 in 7 years when you want to take a world cruise. If you can earn 6% annually how much do you need to invest now, in order to have the amount needed for the cruise?
what is the amount a person would have to deposit today to be able to take out $5000.00 per year for 10 years from an account getting 8% annually?
Click here to see answer by rfer(16322) |
Question 923988: Please help me to solve this word problem: Before the series of x rays are taken, a patient is injected with a special contrast mixture that highlights obstructions in his blood vessels. The amount of the original dose of contrast material remaining in the patient's bloodstream h hours after it is injected is given by h -3/2. How much of the contrast material remains in the patient's bloodstream 4 hours after the injection?
Click here to see answer by KMST(5328)  |
Question 926289: can someone please help me.
The bill for your birthday dinner was $48.50 and you see that your friend wrote $57.23 on the total line of the credit card slip. what percent tip did he leave?
i did $57.23-$48.50=$8.73/100=8.73% which would be the tip.
please help me in what I did wrong
Click here to see answer by TimothyLamb(4379)  |
Question 926462: A store sells lecture notes, and the monthly revenue R of this store can be modelled by the function R(x) = 3000 +500x -100x2, where x is the peso increase over Php 4. What is the maximum revenue?
I could solve this (I think) but I really don't understand the question...
Click here to see answer by rothauserc(4718)  |
Question 926648: Hey everyone i need help with this question i don't know where to even begin.If you guys can please explain it to me in steps that would be great, thank you
The population of a city is modeled with the function P(x)=45,000(1.035)^x of years since 2010.
Use the rule of 70 to estimate the doubling time for the population of this city.
Click here to see answer by stanbon(75887) |
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