All Answers

+118725

LOL:
what is "y" -4(6y+7)=-9

Start by dividing both sides by -4 and then see if you can work out what to do next

MelodyFeb 24, 2014

Suck my d**k<69

GuestFeb 24, 2014

DO 35 DIVIDED BY 7 AND X IT BY 12

GuestFeb 24, 2014

+118725

lolserss:
so 1-( 2 over 1+i) =bi for what real number is b?

1 - 2/(1+i) = bi

1 - 2(1-i) / [(1+i)(1-i)] = bi

1 - 2(1-i) / (1- - 1) = bi

1 - 2(1-i) / 2 = bi

1 - (1-i) = bi

1-1+i = bi
i = bi
b=1

MelodyFeb 24, 2014

Feb 23, 2014

+118725

abdulqader999:
when put y=-x+2 and 3x+3y=12 it shoud () so it's that the answer

I think that you are being asked to solve these equations simultaneously and you are being told that if you put brackets in (factorise) it will help.
Look at the 2nd equation

3x+3y=12
3(x+y)=12
divide both sides by 3
x+y = 4
y = 4-x
Now you can put this value of y into the 1st equation.

4-x = -x+2
Solve this for x and then substitute the answer into the first equation to find y.

MelodyFeb 23, 2014

+201

Probability means the chance or the outcome of something.

If I had 3 pink clips and 2 blue clips, I'd have a most likely chance of picking a pink clip.
If you still don't get it, tell me again and I'll try again.

Hope this helps!
Mathcalc

mathcalcFeb 23, 2014

+6252

Quote:
4v^3* vu^2

4 v ³ * v u ² =

4 v ³ * v * u ² =

4 v ³⁺¹ * u ² =

4 v ⁴ * u ²

RomFeb 23, 2014

+5478

sqrt(1003)=

Got it. Cool Thanks Melody!

kitty<3Feb 23, 2014

So you have:

(3x)^3 (y)^4
-----------------
(3x)^4 (y)^3

When you have exponents to the same common variable OVER each other, you can treat it like a subtraction problem, as followed:

(3x)^3 - (3x)^4 = (3x)^-1

and

y^4 - y^3 = y^1 = y (because any variable to the power of 1 equals that variable)

So now you have:

(3x)^-1 (y)

To be simplified completely, you need to get rid of that negative exponent. To do this, simply move it to the denominator. So now you have:

1(y)
-------
(3x)^1

1 x y = y and as we did before, (3x)^1 = 3x

So your final answer is:

1/3x

GuestFeb 23, 2014

+118725

Me2222d:
:twisted: How do I find the inverse of sine?

inverse sine 0.896 = sin ^-10.896 = arc sin0.896 = asin0.896

asin(0.896)

MelodyFeb 23, 2014

+118725

Algebrapenguin,
I see that you are new here. I am not impressed with your introduction. Attacks like that are not acceptable here, nor is the language.
Spoonify may have gone a little far with the words but the sentiment was not unreasonable. It was a simple problem that bina should have worked out by his/herself.
I think you need to go find yourself a different forum although I doubt your behaviour would be welcome anywhere.
Perhaps you just need to GROW UP.
Melody.

MelodyFeb 23, 2014

Spoonify:
First of all this is a very pathetic problem. I am a mathematician with a doctorate from 3 prestigious colleges. The answer is obviously (-6)(2). You should spend more time on the d**n problem instead of asking someone else. Shame on you. I hope your teacher punishes you for being so dumb. Next time do it yourself.

If the problem was pathetic and you thought they could do it themselves, why answer? Instead of shaming somebody for not being a 'prestigious' student like you, you can help them. What good is learning all the stuff and not wanting to share?
Sure, maybe the problem was simple. But there are more ridiculous questions on the forum elsewhere, people looking to 'troll'. It seems like you, however, maybe do not deserve that doctorate.
I just wanted to tell you that maybe you should really walk a mile in someone else's shoes instead of boasting about your fucking accomplishments.

algabrapenguinFeb 23, 2014

+6252

just type them in. Let's say you want to add 1/3 and 3/4

Type

1 / 3 + 3 / 4 =

or click on the buttons

1 ÷ 3 + 3 ÷ 4 =

RomFeb 23, 2014

+6252

Quote:
The coordinates of three vertices of a triangle are (-1,-1),(5,-1),and (5,-4). What is the area of the triangle ?

at first I thought this was going to be a really neat problem but upon graphing the points it's pretty straightforward.

Plot the points. You see they all nicely line up with each other and form a right triangle.

The area of a right triangle is given by half the product of the two legs (the two short sides).

With a tiny bit of subtraction you can figure out the lengths of these two short sides.

Sketch the thing and I'm sure you can come up with the answer given that Area = 1/2 (leg1)(leg2)

RomFeb 23, 2014

+118725

alnnan@comcast.net:
how much would $45000 in 1978 be worth in 2014

Are you going to give us any inflation rates?

MelodyFeb 23, 2014

Melody:
Help me:
You borrow $30,000 from the bank to buy a car. You pay them back MONTHLY at a rate of 17% per annum for 10 years. You are also charged $10 a month on bank fees. Whats your total repayment to the bank?

A = R * a (angle n at i)
where
a (angle n at i) = [1 - (1+i) ^-n ] / i

i = monthly interest rate = 0.17/12 = 0.01416 (the 6 repeats)
n = the term of the loan = 10*12 = 120 months
A = $30000
R = regular monthly repayment

30000 = R * [ 1 - 1.014166666666 ^-120 ] / 0.014166666666

30000 * 0.0141666666666 / [ 1 - 1.014166666666 ^-120 ] = R

30000 * 0.0141666666666 / [ 1 - 1.014166666666^-120]

R = $521.39
Monthly payment = 521.39 + 10.00 = $531.39

Total repayment = 531.39 * 120 = $63,766.80

I have used the forumulas for present value of an ordinary annuity. the payments are made at the end of every month.
Is this what you wanted or did you need to work it out from first principals using geometric progressions?

This is perfect! Thank you very much!

GuestFeb 23, 2014

+118725

Help me:
You borrow $30,000 from the bank to buy a car. You pay them back MONTHLY at a rate of 17% per annum for 10 years. You are also charged $10 a month on bank fees. Whats your total repayment to the bank?

A = R * a (angle n at i)
where
a (angle n at i) = [1 - (1+i) ^-n ] / i

i = monthly interest rate = 0.17/12 = 0.01416 (the 6 repeats)
n = the term of the loan = 10*12 = 120 months
A = $30000
R = regular monthly repayment

30000 = R * [ 1 - 1.014166666666 ^-120 ] / 0.014166666666

30000 * 0.0141666666666 / [ 1 - 1.014166666666 ^-120 ] = R

30000 * 0.0141666666666 / [ 1 - 1.014166666666^-120]

R = $521.39
Monthly payment = 521.39 + 10.00 = $531.39

Total repayment = 531.39 * 120 = $63,766.80

I have used the forumulas for present value of an ordinary annuity. the payments are made at the end of every month.
Is this what you wanted or did you need to work it out from first principals using geometric progressions?

MelodyFeb 23, 2014

+1313

It's ok, yeh I guess someone who can will answer in due course. I wouldn't think that Melody. Also, I think I posted now, wouldn't have really checked again till morning, and afternoon tomorrow if it hadn't be answered by then. But it's not an urgent question, just one for the next few weeks to prepare. As well, the forums good like that, answering pretty swiftly. And that is good.

StuFeb 23, 2014

Help me:
Melody:
So you are telling me that it is simple interest? That would be extremely unusual.
Simple interest is much easier to work out. Working this out with compound interest is quite advanced. I am not sure which way to go.
Are you sure you want simple interest?

Oh sorry it is compounded monthly, my mistake.

To clarify, I was confused because I never use the term reducible Interest

GuestFeb 23, 2014

Melody:
So you are telling me that it is simple interest? That would be extremely unusual.
Simple interest is much easier to work out. Working this out with compound interest is quite advanced. I am not sure which way to go.
Are you sure you want simple interest?

Oh sorry it is compounded monthly, my mistake.

GuestFeb 23, 2014

+118725

So you are telling me that it is simple interest? That would be extremely unusual.
Simple interest is much easier to work out. Working this out with compound interest is quite advanced. I am not sure which way to go.
Are you sure you want simple interest?

MelodyFeb 23, 2014

+118725

Stu:
What's harder to gain a thorough understanding of while under time constraints: Calculus or Vectors in Engineering?

Hi Stu,
I don't have a thorough understanding of any of those things. I think I will leave your question for Rom. I answered because I didn't want you to think that I was ignoring you.

MelodyFeb 23, 2014

Melody:
Help me:
You borrow $30,000 from the bank to buy a car. You pay them back MONTHLY at a rate of 17% per annum for 10 years. You are also charged $10 a month on bank fees. Whats your total repayment to the bank?

Is it 17% reducible?

GuestFeb 23, 2014

+118725

Help me:
You borrow $30,000 from the bank to buy a car. You pay them back MONTHLY at a rate of 17% per annum for 10 years. You are also charged $10 a month on bank fees. Whats your total repayment to the bank?

Is it 17% reducible?

MelodyFeb 23, 2014

+1313

Bump

StuFeb 23, 2014

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