Wednesday

April 16, 2014

April 16, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**MATH**

2, yes 1/2 3. I guess you want p(red)which is 5/8 4. You have to specify what you want, not imply it. What if the question asked what is the probability CD is ***NOT*** scratched or of NON-fiction
*Thursday, March 13, 2014 at 3:50pm*

**math**

There are 3 side orders: French fries, baked potato, or mashed potatoes. Find the probability of a customer choosing a baked potato. I think 1/3
*Thursday, March 13, 2014 at 3:47pm*

**MATH**

1. Sam flips two coins. Find probability of 1 head and 1 tail. I think 2/4 or 1/2 ----------------------------- yes, 4 possibilities including h,t and t,h so 2/4 = 1/2
*Thursday, March 13, 2014 at 3:46pm*

**MATH**

Write probability as fraction 1. Sam flips two coins. Find probability of 1 head and 1 tail. I think 2/4 or 1/2 2. You roll 1 number cube to show an odd number. I think 3/6 or 1/2 3. Sheila has 8 apples; 5 of them are red. I think 5/8 4. Of 12 books, 3 are fiction I think 3/12...
*Thursday, March 13, 2014 at 3:41pm*

**math**

yes, but divisible by 4 means x/4 = whole number 4 is divisible by 2 BUT 2 is NOT divisible by 4
*Thursday, March 13, 2014 at 3:39pm*

**math**

won't 2 go into 4
*Thursday, March 13, 2014 at 3:35pm*

**math**

1 2 3 4 5 6 the only one divisible by 4 is 4 1/6
*Thursday, March 13, 2014 at 3:31pm*

**math**

you roll a number cube numbered 1 to 6. P(a number divisible by 4) I think 3/6 or 1/2
*Thursday, March 13, 2014 at 3:20pm*

**math**

26+23+16+24=89 violet=24 so 24/89 Correct :)
*Thursday, March 13, 2014 at 3:17pm*

**MATH**

10+6+11=27 brown+white=17 so 17/27 correct 16,18,20,22,24,26,28 so 7/? 16,17,18,19,20,21,22,23,24,25,26,27,28 so ?/13 ---- 7/13 Correct
*Thursday, March 13, 2014 at 3:16pm*

**math**

A container has 26 orange, 23 pink, 16 blue, and 24 violet marbles. A marble is drawn at random. P(violet) I think 24/89
*Thursday, March 13, 2014 at 3:14pm*

**MATH**

A jar contains 10 green, 6 white, and 11 brown marbles. A marble is drawn at random. P(brown or white) I think 17/27 A number from 16 to 28 is drawn at random. P(an even number) I think 7/13
*Thursday, March 13, 2014 at 3:12pm*

**MATH**

1 2 3 4 5 6 primes: 1 3 5 so 3/6 = 1/2 ----------------- 5/6 YES, you got a NOT !!! :) ------------------------- yes -------------- yes
*Thursday, March 13, 2014 at 2:54pm*

**MATH**

You're correct
*Thursday, March 13, 2014 at 2:52pm*

**MATH**

You roll a number cube numbered from 1 to 6. P(a prime number) I think 3/6 or 1/2 P(not a 6) 5/6 P (an even number) 3/6 or 1/2 P (3,6,5,2, or 4) = 5/6
*Thursday, March 13, 2014 at 2:47pm*

**math**

[ -1 +/- sqrt (1 + 72) ] / 2 - 1/2 +/- (1/2) sqrt (73) Hey if a x^2 + b x + c = 0 then x = [ -b +/- sqrt(b^2 - 4 a c) ] / (2a)
*Thursday, March 13, 2014 at 2:42pm*

**MATH**

19 20 21 22 23 16 17 18 so 5/8
*Thursday, March 13, 2014 at 2:39pm*

**Damon/ Math**

You found probability that it IS white BUT It asked for the probability that it was NOT white 31/31 - 6/31 = 25/31
*Thursday, March 13, 2014 at 2:39pm*

**math**

quadrtic formula x^2+x-18=0
*Thursday, March 13, 2014 at 2:37pm*

**MATH**

A number from 16 to 23 is drawn at random. P(a number greater than 18) I think 5/8
*Thursday, March 13, 2014 at 2:32pm*

**Damon/ Math**

A jar contains 21 brown, 4 violet, and 6 white marbles. A marble is drawn at random. P(not white) I think 6/31 YOU DIDN'T SAY IF IT WAS CORRECT OR NOT
*Thursday, March 13, 2014 at 2:31pm*

**math**

You roll a number cube numbered from 1 to 6. P(a prime number) I think 3/6 or 1/2 P(not a 6) 5/6 P (an even number) 3/6 or 1/2 P (3,6,5,2, or 4) = 5/6
*Thursday, March 13, 2014 at 2:28pm*

**math**

That is much harder because I can not factor it. Have to use quadratic equation x = [ -1 +/- sqrt (1+16) ]/2 x = -1/2 +/- (1/2)sqrt(17)
*Thursday, March 13, 2014 at 2:24pm*

**math**

5 x^2 + 4 x - 1 = 0 (5x-1)(x+1) = 0 x = 1/5 or x = -1
*Thursday, March 13, 2014 at 2:21pm*

**math**

Is it correct?
*Thursday, March 13, 2014 at 2:21pm*

**math**

yes, that is the way dice is supposed to work.
*Thursday, March 13, 2014 at 2:20pm*

**math**

I know how you feel!!!!
*Thursday, March 13, 2014 at 2:20pm*

**math**

x^2+x-4=0
*Thursday, March 13, 2014 at 2:20pm*

**math**

5x^2 + 4x = 1
*Thursday, March 13, 2014 at 2:19pm*

**math**

Hey, that word NOT again !!!!!
*Thursday, March 13, 2014 at 2:19pm*

**math**

You roll a number cube numbered from 1 to 6. P(2) I think 1/6
*Thursday, March 13, 2014 at 2:18pm*

**math**

A number from 16 to 23 is drawn at random. P(a number greater than 18) I think 5/8
*Thursday, March 13, 2014 at 2:17pm*

**math**

A jar contains 21 brown, 4 violet, and 6 white marbles. A marble is drawn at random. P(not white) I think 6/31
*Thursday, March 13, 2014 at 2:16pm*

**math**

Right!
*Thursday, March 13, 2014 at 2:08pm*

**math**

yes
*Thursday, March 13, 2014 at 2:05pm*

**Math**

l
*Thursday, March 13, 2014 at 2:04pm*

**math**

agree
*Thursday, March 13, 2014 at 2:03pm*

**math**

21 + 4 + 12 + 18 = 55 so 4/55 yes
*Thursday, March 13, 2014 at 2:03pm*

**math**

Hmmm. of the 11 numbers, how many are NOT 23?
*Thursday, March 13, 2014 at 2:02pm*

**math**

probability that it IS 23 is 1/11 probability that it is NOT is 10/11
*Thursday, March 13, 2014 at 2:02pm*

**math**

A jar contains 8 red, 24 purple, 18 violet, and 24 yellow marbles. A marble is drawn at random. P(yellow) I think 24/74
*Thursday, March 13, 2014 at 1:54pm*

**math**

A jar contains 25 navy, 21 white, 13 purple, and 7 brown marbles. A marble is drawn at random. P(purple or navy) I think 38/66
*Thursday, March 13, 2014 at 1:52pm*

**math**

A number from 21 to 30 is drawn at random. P( a number less than 24) I think 3/10
*Thursday, March 13, 2014 at 1:49pm*

**math**

A jar contains 21 red, 4 black, 12 orange, and 18 pink marbles. A marble is drawn at random. P(black) I think 4/55
*Thursday, March 13, 2014 at 1:47pm*

**math**

A number from 20 to 30 is drawn at random. P(not a 23) I think 1/11
*Thursday, March 13, 2014 at 1:44pm*

**math**

So, P(violet, pink, or blue) = V+P+B
*Thursday, March 13, 2014 at 1:40pm*

**math**

assuming that what was meant is that the jar contains ONLY green and purple marbles . . . I think we can say that, but it's also possible that other marbles were not mentioned. Read Heinlein's Stranger in a Strange Land. One of the characters is a professional observer...
*Thursday, March 13, 2014 at 1:39pm*

**math**

A jar contains 6 pink, 7 violet, 26 green, and 13 blue marbles. A marble is drawn at random. P(violet, pink, or blue). V = 7/52 P = 6/52 B = 13/52
*Thursday, March 13, 2014 at 1:38pm*

**math**

correct
*Thursday, March 13, 2014 at 1:36pm*

**math**

number 2 is ok #1. Come on! The numbers are 1,2,3,4,5,6 only FOUR is divisible by 4! P(4) = 1/6
*Thursday, March 13, 2014 at 1:35pm*

**math**

A jar contains 25 green and 17 purple marbles. A marble is drawn at random. P(not a 23). Answer 17/42
*Thursday, March 13, 2014 at 1:35pm*

**math**

now you're cookin' (aside from that pesky 32!)
*Thursday, March 13, 2014 at 1:34pm*

**Probability - Math**

total junior or seniors / total students (.16+.24)/1.00 = .40 Those who live in the dorm: (.16*.30 + .24*.20)/1.00 = .096
*Thursday, March 13, 2014 at 1:33pm*

**math**

Then number one would be 3/6 or 1/2 And number 2 will be 5/8
*Thursday, March 13, 2014 at 1:14pm*

**math**

So then number 1 is correct Number 2 is Violet - 7/52 Pink - 6/32 Blue - 13/52
*Thursday, March 13, 2014 at 1:11pm*

**Probability - Math**

According to the record of the registrar's office at a state university, 35% of the students are freshman, 25% are sophomore, 16% are junior, and the rest are senior. Among the freshmen, sophomores, juniors, and seniors, the portion of students who live in the dormitory ...
*Thursday, March 13, 2014 at 1:08pm*

**Math**

assuming the velocity is as written, a = 3(2) = 6 If you meant 3(2t+1)^0.4, then a = 2.4/(2t+1)^0.6 as usual, s = 25 + 1/2 at^2 = 25 + 3t^2 or = 25 + 1.2(2t+1)^1.4 just plug in your values.
*Thursday, March 13, 2014 at 12:50pm*

**math**

ummm, 6+7+26+13 = ?
*Thursday, March 13, 2014 at 12:46pm*

**math**

A jar contains 21 brown, 4 violet, and 6 white marbles. A marble is drawn at random. what is the probability you will not draw a white marble? Answer 6/31 A jar contains 6 pink, 7 violet, 26 green, and 13 blue marbles. A marble is drawn at random. what is the probability you ...
*Thursday, March 13, 2014 at 12:42pm*

**math**

If there are 6 numbers on the die, how many of them are multiples of 4? I think not 2. How many numbers are there from 16-23? Remember to count both 16 and 23. #3 ok
*Thursday, March 13, 2014 at 12:40pm*

**math**

You roll a number cube numbered from 1 to 6. what is the probability you roll a number divisible by 4? Answer: I think 2/6 or 1/3 A number from 16 to 23 is drawn at random. what is the probability you draw a number greater than 18? Answer 5/7 A jar contains 21 brown, 4 violet...
*Thursday, March 13, 2014 at 12:35pm*

**math You have a typo**

6" = .5 ft 3" = 3/12 ft = .25 ft 13.25 * 12.5 = 165.625 typo somewhere :( I bet it is 11' s" by 12' 6" because that gives140.625
*Thursday, March 13, 2014 at 12:00pm*

**math**

Jana is going to install ceramic tiles in her kitchen. It measures 13' 3" by 12' 6". How many square feet of tile does Jana need? a.) 142.38 square feet b.) 143 square feet c.) 140.625 square feet Can you please show me how you got your answer
*Thursday, March 13, 2014 at 11:49am*

**math/science**

48 sec
*Thursday, March 13, 2014 at 11:26am*

**Math, accounting, investments**

A firm is evaluating two machines. The first costs $250,000 and will require annual maintenance of $30,000 per year for 10 years. At the end of 10 years, the salvage value will be $75,000. The second machine costs $400,000 and will require $225,000 at the end of the fifth year...
*Thursday, March 13, 2014 at 11:09am*

**Math**

5
*Thursday, March 13, 2014 at 11:07am*

**math**

and it's illegal to buddy
*Thursday, March 13, 2014 at 10:03am*

**math**

b = shoe price s = sock price 2 b + 4 s = 125 times 3 3 b + 5 s = 182 times 2 6 b + 12 s = 375 6 b + 10 s = 364 ----------------- subtract 2 s = 11 s = $5.50
*Thursday, March 13, 2014 at 5:52am*

**College math**

You are welcome :)
*Thursday, March 13, 2014 at 5:23am*

**College math**

Thank you Damon. I could not have done this without your help!!
*Thursday, March 13, 2014 at 5:12am*

**College math**

area = pi r^2 = 16 pi = 50.26548246 m^2 approximately circumference = 2 pi r = 25.13274123 meters
*Thursday, March 13, 2014 at 4:52am*

**College math**

c^2 = a^2 + b^2 the hypotenuse is always the longest side.
*Thursday, March 13, 2014 at 4:49am*

**College math**

Find the area and the circumference of a circle of radius 4 meters. Thank you
*Thursday, March 13, 2014 at 3:57am*

**College math**

The length of the sides of a triangle are given as 8, 15, 17. The hypotenuse is the side that is the length of ____?
*Thursday, March 13, 2014 at 3:55am*

**math**

Corporations are subject to specific corporate tax rates different from those for individuals.
*Thursday, March 13, 2014 at 1:12am*

**math**

Two pairs of shoes and four pairs of socks cost $125, and three pairs of shoes and five pairs of socks cost $182. Find the cost of a pair of socks. $
*Thursday, March 13, 2014 at 1:06am*

**Math**

yes
*Thursday, March 13, 2014 at 12:27am*

**Math**

well, the factors of 18 are 1,2,3,6,9,18 The -21 in the middle makes me think that 2,9 will be likely, so (4x+9)(x-2) gives +x nope (2x+9)(2x-2) gives +14 Hmmm. That pesky 4. So, (4x+3)(x-6) : -21x YAY!
*Thursday, March 13, 2014 at 12:26am*

**Math**

after the 1/3, she had 2/3 left 1/2 of that is another 1/3, so if she started out with x, x - x/3 - x/3 = 6 x = 18 check: she spent 6, had 12 left. she lost half of 12, or another 6, leaving her with just 6.
*Thursday, March 13, 2014 at 12:24am*

**Math**

How do you factor this? 4x^2 - 21x - 18?
*Thursday, March 13, 2014 at 12:22am*

**math**

find the factors. If any of them is zero, the product is zero. Sometimes the factors are hard to find, and sometimes there are none using just real numbers. For higher than quadratics, it starts to become necessary to use various numerical methods.
*Thursday, March 13, 2014 at 12:22am*

**Math**

G
*Thursday, March 13, 2014 at 12:10am*

**math**

pickles
*Wednesday, March 12, 2014 at 11:53pm*

**Math**

Selma went to the mall and spent 1/3 of her money. She then lost 1/2 of what she had left. She then had $6. How much money did Selma originally have?
*Wednesday, March 12, 2014 at 11:49pm*

**math**

Rectangular school yard 280 meters by 245 meters is to be fenced, how many meters of fencing will be required to fence it completely
*Wednesday, March 12, 2014 at 11:35pm*

**Math**

If I had 32 kilobytes and was converting them to Hectobytes using the K H D b d c m would it be 320 hectobytes?
*Wednesday, March 12, 2014 at 10:40pm*

**math**

28/4 = 7 in
*Wednesday, March 12, 2014 at 10:23pm*

**math**

The voltage (in volts) induced in a coil of wire is v = (2t + 1)0.5. The current in the coil is initially 0.3 amps, and the inductance is 5H. What is the equation for the current in the coil?
*Wednesday, March 12, 2014 at 10:21pm*

**Math**

The velocity (feet per second) of an object is given by the equation v = 3(2t + 1)0.4. What is the equation for the acceleration of the object? What is the equation for the displacement of the object? The displacement is initially 25 feet. What are the values of the ...
*Wednesday, March 12, 2014 at 10:20pm*

**math**

the perimeter of a square is 28 inches. What is the length of each side?
*Wednesday, March 12, 2014 at 10:14pm*

**math**

How do you solve an equation with trinomials and polynomials equal to zero?
*Wednesday, March 12, 2014 at 9:34pm*

**math**

No, That answer makes no sense. 2.8 pages???
*Wednesday, March 12, 2014 at 9:17pm*

**math**

Is the answer 2.80?
*Wednesday, March 12, 2014 at 9:04pm*

**math**

Divide.
*Wednesday, March 12, 2014 at 9:01pm*

**math**

There are 518 student pictures for the yearbook. If 15 pictures fit on a page, how many pages can be completely filled?
*Wednesday, March 12, 2014 at 9:00pm*

**math**

Multiply
*Wednesday, March 12, 2014 at 8:56pm*

**math**

http://state-facts.findthedata.org/q/20/1899/What-is-the-highest-point-in-Alabama
*Wednesday, March 12, 2014 at 8:54pm*

**math**

It costs about .10cents per week to feed a snake. How much does it cost to feed 35 snakes for 4 weeks?
*Wednesday, March 12, 2014 at 8:53pm*

**math**

Subtract. I question the accuracy of the lowest point in Alabama.
*Wednesday, March 12, 2014 at 8:51pm*

**math**

2096 * 3 = _______ feet
*Wednesday, March 12, 2014 at 8:50pm*

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