All Questions

893

Problem Solving

Let's pretend the entire ocean is 11 kilometers deep (depth of Mariana Trench, the lowest part of Earth).
If the Earth were the size of a billiard ball, how much water (in mL) would there be in all billiard-ball-Earth oceans?
Good luck

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Guest Feb 14, 2014

904

+1313

OK, so I get the quadratic formula. it ain't such a tough nut rather it is more like a gentle baby. but to save upsetting it on this day of romance I'd like

OK, so I get the quadratic formula. it ain't such a tough nut rather it is more like a gentle baby. but to save upsetting it on this day of romance I'd like to resolve one thing about square rooting in maths/this formula.
after half of the formula I have, read more ..

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Stu Feb 14, 2014

674

decimal to a fraction

what is 8.6 as a fraction?

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Guest Feb 14, 2014

770

greates comen facter of 18 and 35

what is the gcf of 18 35

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Guest Feb 14, 2014

820

+118730

Valentine's mathogram

Would you like to send a Valentine's mathogram?
Highlight, right click and choose goto.
http://mathogram.desmos.com/

Melody Feb 14, 2014

798

7sin(x)=0, 0<x<2pi

Hi, I was wondering how to solve 7sin(x)=0, 0<x<2pi for the exact radian values over the given intervals

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wlc17math Feb 14, 2014

708

Mean and Standard Deviation?

The test scores were normally distributed with a mean of 43 and a standard deviation of 3.
(a) Approximately what percentage of the scores lies between 40 and 46?
(b) Approximately what percentage of the scores lies between 43 and 46?

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Guest Feb 14, 2014

652

math

:)what is 9/2 as a percent

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Guest Feb 14, 2014

680

math

what is the angle whose sin is 6/7
can you explain how do we use a calculator for that ?

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Guest Feb 14, 2014

525

fractions

what is 2/8 of 24

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Guest Feb 14, 2014

Feb 13, 2014

782

fractions

what is -1.2 turned into a fraction

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Guest Feb 13, 2014

1625

Trigonometric Equations

Solve the equation bolow given that 0 < x < 2pi
cos2x + 1/2 = 0
(sqrt(3) tan x + 1)(2 sinx - sqrt(3)) = 0
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I've been having trouble with this problem.

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Guest Feb 13, 2014

937

+39

Credit Card Charges

Nelson charged $542.95 for a new printer on May 12 and $56.79 for a restaurant bill on May 22. Calculate the interest charged, at 19.5% simple interest, on the payment date of June 21st.
(RECALL: I = PrT)
Okay, so I am having troubles figuring out read more ..

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tannawirsch Feb 13, 2014

693

Asking math question

What is fraction 2 2/5 x 80

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Guest Feb 13, 2014

628

maths

Jenna has 28 marbles. She wants to give them as gifts to each of her 4 chihuahuas.
How many marbles does each chihuahua get?

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Guest Feb 13, 2014

1908

+118730

Positive and negative numbers

Positive and negative numbers
For multiply and divide it is very simple. If the signs are the same then the answer is positive. If the signs are different the answer is negative. See, simple.
For addition and subtraction it is a bit trickier.
I read more ..

Melody Feb 13, 2014

529

maths

how do math

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Guest Feb 13, 2014

1341

Math Methods #2

A girl has some beads. She use 1/3 of the beads to make a bracelet. She uses 3/5 of the beads to make a necklace. She used 36 more beads for the necklace. How many beads did she use for the bracelet?
Please give me a method, not the answer!
And no read more ..

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Guest Feb 13, 2014

847

Math Methods

There is a total of 5,170 in an account. Mrs. Jefferson deposits $420 in her account and Mr. Jefferson deposits $621 in his account. Now they have the same amount of money. How much money did they each have at first?
Please just give me a method to solve read more ..

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Guest Feb 13, 2014

2180

maths

a semicircle has a diameter of 20cm work out the perimeter of the semicircle take the value of pi to be 3.14

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Guest Feb 13, 2014

526

MATH QUESTION PLZ HELP

:mrgreen: Hi

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Guest Feb 13, 2014

478

Math

if ive got 2 apples and drop one, how many apples do i have?

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Guest Feb 13, 2014

845

Logarithm problem?

9 ln e 2 + 4 log46 - log42 - 7 log721 + log 71

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Guest Feb 13, 2014

691

answer

-5+(-3)-(-7)

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Guest Feb 13, 2014

1293

logic puzzle from "hardest logic puzzle ever"

Puzzle 1: Noting their locations, I place two aces and a jack face down on a
table, in a row; you do not see which card is placed where. Your problem is to
point to one of the three cards and then ask me a single yes-no question, from the
answer read more ..

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Guest Feb 13, 2014

All Questions ⁺⁰237732 Questions

Problem Solving

OK, so I get the quadratic formula. it ain't such a tough nut rather it is more like a gentle baby. but to save upsetting it on this day of romance I'd like

decimal to a fraction

greates comen facter of 18 and 35

Valentine's mathogram

7sin(x)=0, 0<x<2pi

Mean and Standard Deviation?

math

math

fractions

fractions

Trigonometric Equations

Credit Card Charges

Asking math question

maths

Positive and negative numbers

maths

Math Methods #2

Math Methods

maths

MATH QUESTION PLZ HELP

Math

Logarithm problem?

answer

logic puzzle from "hardest logic puzzle ever"

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