All Answers 358514 Answers

+118725

0

ihatetrig:
When do you use sine vs sine-1? Like trig versus inverse trig?

You use sine when you have the angle and are looking for a side.

You use inverse trig when you are looking for an angle.

MelodyFeb 26, 2014

0

GuestFeb 26, 2014

+2

0

I'm agreeing with the answer 9.98

QueenBloggerFeb 26, 2014

0

GuestFeb 26, 2014

0

Do u have an example problem?

GuestFeb 26, 2014

+118725

0

RFontus 605:
Ask a Math Question!
what is 12/104 in improper fractions?

This number is less than one so it cannot be written as an improper fraction.

MelodyFeb 26, 2014

+118725

0

Guest:
Given triangle ABC with a=12, C=29, and B=28, find c.

use cosine rule

MelodyFeb 26, 2014

+118725

0

RKAT12:
HOW TO SOLVE INEQUALITY ON CALCULATOR

you solve as an equation and do some of the thinking yourself.

MelodyFeb 26, 2014

+118725

0

Wait, What?:
Solve by changing the percent to a fraction.

1. 33 1/3% of 132

3. 16 2/3% of 720

9. 3 1/2% of 600

How would I answer these? Please help!

percent means divide by 100 and of means multiply
so the first one is
33 1/3 divided by 100 times 132 = 44

MelodyFeb 26, 2014

Feb 25, 2014

+118725

0

Guest:
what is x/7=0.44

multiply both sides by 7

MelodyFeb 25, 2014

+118725

0

beezy_otf:
What is the square root of 64?

8*8=64
so your answer is 8

MelodyFeb 25, 2014

+118725

0

nate123706:
what is the arctan(Squareroot(3)) in radians.

atan(sqrt(3))

what is 60 degress in radians

180 degrees = pi radians
1 degree = pi/180 radians
60 degrees = pi/180 * 60 radians = pi/3 radians

or you could just put it into your calc in radians in the first place.
or you know more about a 30,60 90 triangle and get it from that.

MelodyFeb 25, 2014

+118725

0

Lisacow:
How would you type in a log of5 instead of 10

You can't but you can use change of base rule

log ₅26 = log26 / log5 = approx 2.024

And that is in whatever base you like.

This is a page that I refer to constantly.
http://en.wikipedia.org/wiki/List_of_logarithmic_identities

MelodyFeb 25, 2014

+118725

0

Don't got one:
What is 8 over 3in simplest from

Thanks for answering Red Ranger, you are right that the numbers cannot be simplified but it is given as an improper fraction so a mixed numeral is probably better.

3 goes into 8 twice with 2 left over

answer is 2 and 2/3

MelodyFeb 25, 2014

+118725

0

Guest:
4/5 devided 2/3 and reduce to lowest term.

4/5 divided by 2/3 = 4/5 multiplied by 3/2 = 12/10 etc

MelodyFeb 25, 2014

+118725

0

kia:
a^2+b^2=c^2

this is not a question.

MelodyFeb 25, 2014

+118725

0

strawberry1010:
margo has a drawer full of cubes. she has 3 cubes with the number 6 on them she has 4 cubes with the number 5 printed on them. she has 7 cubes with the number 8 printed on them. she has 2 cubes printed with the number 9 on them. what is the probability she will pick a cube with the number 8 printed on it

okay so she has 3+4+7+2 = 16 cubes altogether.
7 of them have an 8

so

P(choosing 8) = 7/16

MelodyFeb 25, 2014

+118725

0

Ashley:
Sqrt((1-3.5)^2(1/6)+(2-3.5)^2(1/6)+(3-3.5)^2(1/6)+(4-3.5)^2(1/6)+(5-.3.5)^2(1/6)+(6-3.5)^2(1/2)

Sqrt [ (1-3.5) ²(1/6)+(2-3.5) ²(1/6)+(3-3.5) ²(1/6)+(4-3.5) ²(1/6)+(5-.3.5) ²(1/6)+(6-3.5) ²(1/2) ]

Are you sure the last one is 1/2? All the others are 1/6. I am going to change it to 1/6. If I am wrong it doesn't matter much you can still work it out easily enough.

These are all numbers so you could just do them on your calc but lets look at it anyway.

Sqrt [ (1-3.5) ²(1/6)+(2-3.5) ²(1/6)+(3-3.5) ²(1/6)+(4-3.5) ²(1/6)+(5-.3.5) ²(1/6)+(6-3.5) ²(1/6) ]

= Sqrt [ (-2.5) ²(1/6)+(-1.5) ²(1/6)+(-0.5) ²(1/6)+(0.5) ²(1/6)+(1.5) ²(1/6)+(2.5) ²(1/6) ]

= Sqrt [ {(-2.5) ²+(-1.5) ²+(-0.5) ²+(0.5) ²+(1.5) ²+(2.5) ²} / 6 ]

= Sqrt [ {(2.5) ²+(1.5) ²+(0.5) ²+(0.5) ²+(1.5) ²+(2.5) ²} / 6 ]

= Sqrt [2 {(2.5) ²+2(1.5) ²+2(0.5) ²} / 6 ]

= Sqrt [ {(2.5) ²+(1.5) ²+(0.5) ²} / 3 ]

= Sqrt [ 8.75 / 3 ]

= Sqrt [ 35/12 ]

MelodyFeb 25, 2014

+118725

0

mathcalc:
Here;s the problem:

1. 12n+7=8n+15

The second problem is:
2m-3=m

Hi Jyoti,
How much algebra have you done. This seems like an odd place to start.
Let's look at the first one.
1. 12n+7=8n+15
The idea is to get all the lots of n on one side and all the numbers without n's on the other side.
However, you have to think of it the other way around.
You say to yourself - What do I want to get rid of. (There is always more than one way that they can be done)
I have decided that I want to get rid of the 8n from the Right Hand side (RHS)
I can do that by taking it away. BUT if I take it away from the RHS then i have to take it away from the LHS as well.
12n + 7 = 8n + 15
12n + 7 - 8n = 8n +15 - 8n
12n - 8n +7 = 8n-8n+15
4n + 7 = 15
Now I want to get rid of the 7 so I will subtract it from both sides.
4n+7-7 = 15-7
4n = 8
4 * n =8 (4n means 4*n)
Now i want to get rid of the times 4 The opposite of timesing by four is dividing by 4 so, divide both sides by 4
4n/4 = 8/4
n = 2

Now the second one
2m-3=m
If you understand negative numbers then you would subtract 2m from both sides. HOWEVER, I am going to assume that you do not understand negative numbers.
So
Start by adding 3 to both sides,
then, subtract m from both sides,
then, think about what you need to do to finish it.

It has only just occured to me that maybe you just supposed to 'guess' the answers. This is a valid way as well. I have shown you how to do it formally. When the questions get hard you will have to do them formally so it wont hurt you to try and understand now.

MelodyFeb 25, 2014

0

GuestFeb 25, 2014

+118725

0

diiimah:
Derived :
f(x)=sqrt(x+2)

I am sorry diiimah but there really is no question here.

If you wanted to know what f(6) was, I could answer that but you have not asked a question.

Did you take a look at that other answer that my friend gave? I have not as yet.

MelodyFeb 25, 2014

0

THESES NUTS YOU THOT

GuestFeb 25, 2014

0

This is rather easy. It's 8/3

You can't simplify it any more because 3 does not go into 8 evenly and you can't use decimals. Hope this helped.

GuestFeb 25, 2014

0

4/5 divided by 2/3 will make 12/10 which can be written as 6/5 (divide it by 2)

GuestFeb 25, 2014

+118725

0

lovelace:
in quadractic formula what do you multiply the 4 by first the A or the C

hi Lovelace,

4*a*c = 4*c*a so it really doesn't matter. Have a look at this web address

http://www.youtube.com/watch?v=O8ezDEk3qCg

For some reason it doesn't have any picture on my computer. It used to. Maybe it will work properly for you. It just might help you remember the formula a bit better.

MelodyFeb 25, 2014

0 Online Users