All Answers 359332 Answers

You should use a calculator to answer questions like these.

I keep sorting them into two groups until there is only one in each group.

Like for instance

5, -4,  0.6,  0.1,  11/12

First negs are smaller than pos so -4 is in one pile and the rest in another

-4,              5,  0.6,  0.1,  11/12

 Now I can see that 5 is the biggest it is the only one greater than 1

-4,              0.6,  0.1,  11/12                  5

Now I would split them into more than 1/2 and less than 1/2.   0.1 is the only one less than 1/2

-4,              0.6,  0.1,  11/12                  5

-4,   0.1,                 0.6,  11/12                         5

Now 11/12 is almost 1 and 0.6 is only a bit more than 1/2   so the answer is 

-4,      0.1,       0.6,     11/12       5

If there are any that are really close together you can use a calc to change them to decimals and you should know how to place decimals in order!

3y^2+31y+36

I am sorry guest but your answer is NOT correct.

There is no equal sign here, this is NOT an equation.  So you have answered a different question entirely!

The question is, how do you factor    \(3y^2+31y+36\).

What you need to look for is two numbers that multiply to 3*36  and add to 31

Since both these numbersare positive, both the numbers that you are looking for will also be positive.

Factors of 3*36 

=3*3*12

=3*3*3*4

=3*3*3*2*2

=  27 * 4

and 27+4=31 so these are the numbers that I want.

So now I have to repleace  31y   with    27y+4      like this

\(\quad3y^2+31y+36\\ =​​​​3y^2+27y+4y+36\\ \mbox{Now I have to factor in pairs}\\ =3y(y+9)+4(y+9)\\ =(3y+4)(y+9)\)

If you do not understand say so :))

48x divided by -6/7

48x / (-6/7)

48x X -7/6

-336x/6

=-56x

3y^2+31y+36

Solve for y over the real numbers:
3 y^2+31 y+36 = 0

The left hand side factors into a product with two terms:
(y+9) (3 y+4) = 0

Split into two equations:
y+9 = 0 or 3 y+4 = 0

Subtract 9 from both sides:
y = -9 or 3 y+4 = 0

Subtract 4 from both sides:
y = -9 or 3 y = -4

Divide both sides by 3:
Answer: | 
| y = -9 or y = -4/3

Type it into the calculator, and you will get

- 8x/7

First you need to put 48x ÷ -6 then divided by 7 which will look like

48x

-6

7

Which will the simply down to

-8x

7

Note: Underlines mean division. 

what does h equal in...

2.5/6=h/9

h=2.5/6 X 9

h=3.75

what is the frequency of light if its wavelength is 5.4e^(-5) centimeters?

Wavelength=Speed of light/Frequency

5.4e^(-5)=299,792,458,000cm/F

F=299,792,458,000cm/5.4e^(-5)cm

F=8.239471438316 X 10^12 Hertz-the frequency of light.

Yes, that are gone.  It is a pity that some people have so little to do with their time. 

Thanks for bringing it to my attention.  :))

OK. Please tell me who is the referee or the authority that is telling you it's wrong. Is it your teacher? Is it the answer in a Math book? I'm very curious to know!!!!. You do understand what these two expressions stand for, right?. The calculation is so primitive that a 10-year old gifted child could easily do it. I'm totally baffled.

I dont have the answer. Thats why I posted the problem. I got what you did and its wrong. 

OK. Why don't you give us your "right" answer, please.

Relax. I put that answer in and its wrong. And its checked

(4.0/3.0)*pi*55^3=1 1/3*pi*166,375=696,909.97

It is really great to see these wonderful answerers from guests.

We would really like you to become members.  There used to be a lot more active members - young ones - and the place was a lot more alive.  If you have names we get to know you and our community develops.  It is good for everyone.  

But, even if you don't become members it  is great thay you are posting good answers :)

THAT IS THE ANSWER THE WAY YOU HAVE IT POSTED!!!!!!!!!!!!!. CHECK AND SEE WHERE YOUR MISTAKE IS.

FIrst turn all the fractions into 8ths   (this is assuming she gave 1/2 of A pizza to Chris)

1/2 =4 / 8  to Chris

3/8            to John

1/4 = 2 /8  to Sally

2 pizzas =  16/8 pizzas

SO the question says she gave away  4/8  + 3/8  +  2/8 = 9/8ths of the pizza

16/8 - 9/8 = 7/8 of a pizza left (seven slices)

IF she gave 1/2 of THE (two) pizzas to Chris she is left with one pizza (8 slices)

then she gives 3/8 to John      she now has  5/8 pizza left (5 slices)

then she gives 2/8ths to Sally   so she is left with 3/8th pizza (3 slices)

The wording of the pizza she gave to Chris is a little unclear.

\(\mbox{The reliable way to do this is to use the formula }\\ \theta = \arccos\left(\dfrac{v \cdot w}{\|v\| \|w\|}\right)\)

\(v=(5,0), \|v\|=5 \\ w=(2,3), \|w\|=\sqrt{2^2+3^2} = \sqrt{13}\\ v\cdot w = 5\cdot 2 + 0\cdot 3 = 10\\ \arccos\left(\dfrac {10}{5 \cdot \sqrt{13}}\right) = 56.31^\circ\)

Michelle ordered two large pizzas. Each pizza was cut into eight slices of equal size. She gave 1/2 of the pizza to Chris, 3/8 of a pizza to John, and 1/4 of a pizza to Sally. How many slices of pizza were left?

Your percentages don't add up right: 1/2 + 3/8 +1/4=1 1/8 is wrong. They must be equal to or less than 1.

Thank you so much :)

Thats not the answer

I think I messed up, someone correct me if i'm wrong

\(a x + z = a w + y \\ a x - a w =y - z \\ a(x-w)= y-z \\ \mbox{assuming }x \neq w \\ a=\dfrac{y-z}{x-w}\)

\(q = p(r+s) \\ q = p r + p s\\ q -p s = p r \\ \mbox{assuming }p\neq 0 \\ r = \dfrac {q - ps}{p}\)

\(m = \dfrac{y_2-y_1}{x_2-x_1} \\ m(x_2-x_1) = y_2-y_1 \\ y_2 = m(x_2-x_1)+y_1\)