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April 20, 2014

April 20, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**math**

you dump a box of numbered sticks from 1 to 100, what is the probability that I will get a multiple of 8
*Wednesday, April 2, 2014 at 3:35pm*

**math**

1/5
*Wednesday, April 2, 2014 at 3:34pm*

**Math 2**

-489 > -498
*Wednesday, April 2, 2014 at 3:33pm*

**math**

you dump a box of numbered sticks from 1 to 100, what is the probability that I will get a multiple of 5,
*Wednesday, April 2, 2014 at 3:31pm*

**math**

1. n/2 = 38/2 =19 2) median is the mean of the 19th and 20th number. Mean = 12/2 = 6
*Wednesday, April 2, 2014 at 3:31pm*

**Math**

A B B B
*Wednesday, April 2, 2014 at 3:29pm*

**math**

what are the odds i favor of picking an S in Mississippi?
*Wednesday, April 2, 2014 at 3:24pm*

**Math 2**

Which is bigger -489 or -498? Use greater or less signs. Thanks
*Wednesday, April 2, 2014 at 3:18pm*

**Math**

What number is added to each number to get the next number? 509 + ____ = 517 517 + ____ = 525 etc.
*Wednesday, April 2, 2014 at 3:09pm*

**Math**

My pattern is 509, 517, 525, 533, 541. What is the place value to describe how the numbers change?
*Wednesday, April 2, 2014 at 3:06pm*

**Math (check answer)**

Sometimes is correct.
*Wednesday, April 2, 2014 at 3:02pm*

**Math (check answer)**

i meant sometimes
*Wednesday, April 2, 2014 at 3:00pm*

**Math (check answer)**

1.never the difference of two positive integers is _____ negative. A.always B.sometimes C.never
*Wednesday, April 2, 2014 at 3:00pm*

**math**

find the median for the given frequency score, x = 1,2,3,4,5,6,7,8,9,10 frequency, f = 1,1,3,3,5,7,5,5,7,1
*Wednesday, April 2, 2014 at 2:18pm*

**math**

correct. The power set of A P(A) is the set of all subsets of A. These would be {}, {2}, {3},...{2,3},{2,5},... and so on up to A itself.
*Wednesday, April 2, 2014 at 12:59pm*

**math**

Oh thanks..its 2^5=32..
*Wednesday, April 2, 2014 at 12:35pm*

**math**

5
*Wednesday, April 2, 2014 at 12:29pm*

**math**

the garden is 10x10, so what's the perimeter?
*Wednesday, April 2, 2014 at 12:27pm*

**math**

Suzanne wants to put a fence around her square garden. If the garden covers an area of 100 ft2, how many feet of fencing does she need? (1 point) 20 ft 40 ft 10 ft 400 ft
*Wednesday, April 2, 2014 at 12:24pm*

**math**

well, how many elements in A?
*Wednesday, April 2, 2014 at 12:23pm*

**Math**

ignore the 2nd part of my answer to the above, the numbers don't even match. I cut and pasted from a previous solution but the numbers were not even the same Also note that even though 263 is a solution, it is one of an infinite number. But it said to find "a number&...
*Wednesday, April 2, 2014 at 12:23pm*

**math**

six sides, so make sure there are 2 odd numbers.
*Wednesday, April 2, 2014 at 12:22pm*

**math**

Given a set with n elements has 2^n subsets.Find the number of subsets for set A={2,3,5,7,11}.
*Wednesday, April 2, 2014 at 12:06pm*

**Math**

a=b b+2b = 6(a-26) 3b = 6(b-26) 3b = 6b - 156 b = 52 So, they both started out with 52 cupcakes.
*Wednesday, April 2, 2014 at 12:03pm*

**Math**

look up "Chinese Remainder Theorem" and you will find many pages for this kind of problem You will have to know how to do arithmetic in "modular arithmetic" , and this forum_search_20140419 is not suitable to teach you that. I just worked out the above ...
*Wednesday, April 2, 2014 at 11:22am*

**math**

In English Class, after studying a book called \The Lord of the Flies" by William Golding, students are split into 6 groups and each group is required to make a fi lm based on one of the 8 important scenes in the novel. Each group can choose which scene they are creating ...
*Wednesday, April 2, 2014 at 11:02am*

**math**

your data just has to be entered here http://davidmlane.com/hyperstat/z_table.html
*Wednesday, April 2, 2014 at 11:01am*

**math**

number of boys --- 2x number of girls --- 5x after 12 new boys number of boys = 2x+12 girls , still 5x (2x+12)/(5x) = 4/9 18x + 108 = 20x 108 = 2x x = 54 So now the number of boys = 2x+12 = 108+12 = 120
*Wednesday, April 2, 2014 at 11:00am*

**Math**

This problem from China is almost 2000 years old: Find a number that when divided by 3 gives a remainder of 2, when divided by 5 gives a remainder of 3, and when divided by 7 gives a remainder of 4.
*Wednesday, April 2, 2014 at 10:52am*

**math**

the current ratio of boys to girls at a certain school is 2 to 5 . if 12 additional boys were added to the school, the new ratio of boys to girls would be 4 to 9. how many boys currently attend the school?
*Wednesday, April 2, 2014 at 10:28am*

**math **

suppose a normal distrubtion has a mean of 25 and a standard deviation of 2. what is the area under the curve between 23 and 27
*Wednesday, April 2, 2014 at 10:10am*

**Math**

A and B had an equal numbers of cupcakes at first. After B bought twice as many cupcakes as he had at first and A gave away 26 cupcakes, B had 6 times as many cupcakes as A. How many cupcakes did A have at first?
*Wednesday, April 2, 2014 at 9:37am*

**math**

To compare 3/8 and 9/16 what equivalent fraction could you find
*Wednesday, April 2, 2014 at 8:12am*

**math**

write a number on each section of a hexagon so that the probability of getting an odd number is 1/3
*Wednesday, April 2, 2014 at 6:21am*

**math**

center at (0,0) a^2+b^2 = c^2 c = √85
*Wednesday, April 2, 2014 at 5:51am*

**math**

a+50 = 2b b+50 = 2a (a+b)+100 = 2(a+b) a+b = 100
*Wednesday, April 2, 2014 at 5:49am*

**math**

a < c a+c = 29 m = a+26 we want maximum value for alvin, because that will also give the max to melvin. Since a<c, alvin has to have less than half of their shared 29. So, a <= 14 a=14 c=15 m=40 max total: 69
*Wednesday, April 2, 2014 at 5:46am*

**math**

$10 is tax. 50% of that is $5, so reduce the cost by that much. What % of 90 is 5? Just wondering -- where is the profit needed to make money?
*Wednesday, April 2, 2014 at 5:42am*

**business Math**

Lane French had a bad credit rating and went to a local cash center. He took out a $100 loan payable in two weeks at $115. What is the percent of interest paid on this loan? (Do not round intermediate calculations. Round your answer to the nearest whole percent.)
*Wednesday, April 2, 2014 at 5:20am*

**Business Math**

Joanne and Ed Greenwood built a new barn with an attached arena. To finance the loan, they paid $1,307 interest on $45,000 at 4.0%. What was the time, using exact interest? (Do not round intermediate calculations. Round up your answer to the nearest day.) Please help!
*Wednesday, April 2, 2014 at 5:18am*

**Math**

80miles = 80*1.60934 = 128.7472 km
*Wednesday, April 2, 2014 at 5:17am*

**math**

A product cost $100, 90% of the price being production cost,the remainder being tax, if the govt raises the tax by 50%, by how much in % will the factory have to reduce its production cost to keep he price still at $100
*Wednesday, April 2, 2014 at 4:31am*

**math**

Alvin, Calvin and Melvin each have some positive integer number of sweets. Alvin has fewer sweets than Calvin, and they have 29 sweets in total. Melvin has 26 sweets more than Alvin. What is the maximum number of sweets that they can all have in total?
*Wednesday, April 2, 2014 at 3:34am*

**math**

Adam and Bob went apple picking in an orchard. At the end of the day, they realized that if Adam had picked 50 more apples, he would have picked twice as many as Bob picked. On the other hand, if Bob had picked 50 more apples, he would have picked twice as many as Adam picked...
*Wednesday, April 2, 2014 at 3:28am*

**math**

a number of children chose roald dahl multiplied by a number of children who chose C.S Lewis is 735. 14 more chose Jacquline wilson. how many chose Jacquline wilson and how many chose roald dahl
*Wednesday, April 2, 2014 at 1:54am*

**math**

Find the foci x^2/49 + y^2/36 = 1
*Wednesday, April 2, 2014 at 1:48am*

**Math**

x^2/5 +8x/5 -1
*Wednesday, April 2, 2014 at 1:04am*

**Math (how do you find the volume of a cone)**

for any object with a point at the top and straight sides use (1/3) height * area of base
*Wednesday, April 2, 2014 at 12:49am*

**Math**

Dd
*Wednesday, April 2, 2014 at 12:26am*

**Math**

How do you solve 1/5(x^2+8x-5)
*Tuesday, April 1, 2014 at 11:56pm*

**Math**

forgot the link http://www.jiskha.com/display.cgi?id=1329034595
*Tuesday, April 1, 2014 at 11:25pm*

**Math**

looks like yours, just input 20 instead of the 60
*Tuesday, April 1, 2014 at 11:25pm*

**Math (how do you find the volume of a cone)**

V = (1/3) pi r^2 h
*Tuesday, April 1, 2014 at 11:07pm*

**Math (how do you find the volume of a cone)**

for example, a radius of 5 and a height of 20, could you please explain the steps? Thank you in advance!!
*Tuesday, April 1, 2014 at 11:06pm*

**Math**

Use the pythagorean theorem. a^2+b^2=c^2
*Tuesday, April 1, 2014 at 10:49pm*

**Math**

The formula r=2sqrt(...)5L can be used to approximate the speed r, in miles per hour, of a car that has left skid marks of length L, in feet. How far will Acari skid at 20 mph?
*Tuesday, April 1, 2014 at 10:46pm*

**Math**

Darla is building a desk. To make sure she had made a square corner, she measures 7ft from the corner along one edge, and 8ft from the corner of the other edge. How long should the diagonal be between those two points if the corner is a right angle?
*Tuesday, April 1, 2014 at 10:42pm*

**Math**

-1/4
*Tuesday, April 1, 2014 at 10:37pm*

**Math**

http://hubpages.com/hub/What-are-the-Properties-of-Addition-and-Multiplication
*Tuesday, April 1, 2014 at 10:02pm*

**math**

0.8 * 4 = ?
*Tuesday, April 1, 2014 at 9:59pm*

**Math**

What property is shown in the equation below? 6x0=0 a)zero property of multiplication b)inverse property of multiplication c)identity property of multiplication d)commutative property of multiplication
*Tuesday, April 1, 2014 at 9:58pm*

**Math!!!**

4/100 = x/80 100x = 320 x = 3.20 or take .2($4) = $ .80 after discount, cost = $ 4.00 - .80 = $3.20
*Tuesday, April 1, 2014 at 9:56pm*

**math**

Sam buys a lamp during the sale. There was a discount of 20%. If the original price is $4, what is the sale price?
*Tuesday, April 1, 2014 at 9:52pm*

**Math**

-4,-1/4,4,1/4
*Tuesday, April 1, 2014 at 9:49pm*

**Math**

did it here .... http://www.jiskha.com/display.cgi?id=1396401662 give your posts a bit of time. You reposted this with only about 20 minutes in between. If tutors are online they may be answering somebody else's question while yours is waiting.
*Tuesday, April 1, 2014 at 9:49pm*

**math**

0.6 * 50 = ?
*Tuesday, April 1, 2014 at 9:46pm*

**Math**

What is y+3-4=5, with the sqrt.(...) sign over y+3
*Tuesday, April 1, 2014 at 9:46pm*

**math**

A pen is marked down 40% from the original price. The original price was $50. What is the sale price before sales tax?
*Tuesday, April 1, 2014 at 9:44pm*

**math**

By definition, parallel rays never meet.
*Tuesday, April 1, 2014 at 9:43pm*

**Math**

0.6x = 12 x = 12/0.6 x = 20 20 - 12 = ?
*Tuesday, April 1, 2014 at 9:33pm*

**MATH UGH WORD PROBLEM**

capacity of tank = π r^2 h = π(100^2)(40) = 400000π number of gallons = 7.5(400000π) = appr .....
*Tuesday, April 1, 2014 at 9:30pm*

**Math!!!**

Sam buys a lamp during the sale. There was a discount of 20%. If the original price is $4, what is the sale price? - Please put in proportion form!
*Tuesday, April 1, 2014 at 9:15pm*

**math..help again**

Got it.... Thanks so much!!!
*Tuesday, April 1, 2014 at 9:14pm*

**Math**

A shirt is on sale for 40% off. The sale price is $12. What was the original price? What was the amount of the discount?
*Tuesday, April 1, 2014 at 9:13pm*

**math**

90
*Tuesday, April 1, 2014 at 9:11pm*

**MATH UGH WORD PROBLEM**

About 7.5 gallons of water occupy one cubic foot. About how many gallons of water are in a clindrical water tank with dimensions with 100 ft radius and 40 ft height.
*Tuesday, April 1, 2014 at 9:10pm*

**math**

can a parallel rays form an angle explain
*Tuesday, April 1, 2014 at 9:06pm*

**math**

Jill is corrrect
*Tuesday, April 1, 2014 at 9:04pm*

**Math**

area of whole thing is 120x60 = 7200 ft^2 so half of that is 3600 ft^2 make a sketch showing the first run area of 1st run = 120x4 + 120x4 + 52x4 + 52x4 = 1376 leaving 2224 make a sketch of the remaining rectangle which is 112 by 52 area of 2nd run = 112x4+112x4+48x4+48x4 = ...
*Tuesday, April 1, 2014 at 8:55pm*

**Math**

The demand for rice in Japan for a particular year was estimated by the general function q = f (p) =Ap^(-0.13), where p represents the price of a unit of rice, A represents a constant that can be calculated uniquely for a particular year, and q represents the annual per capita...
*Tuesday, April 1, 2014 at 8:46pm*

**Math- urgent**

1st number --- x 2nd number --- y "The second of two numbers is five more than the twice first." ---> y = 2x+5 "the sum of the numbers is 44" ---> x+y = 44 x+y = 44 x + (2x+5) = 44 x + 2x + 5 = 44 3x = 39 x = 13 1st is 13, 2nd is 31 check: is 31 five ...
*Tuesday, April 1, 2014 at 8:44pm*

**math..help again**

look back at your previous post of this same question
*Tuesday, April 1, 2014 at 8:42pm*

**math**

2.75 * 3.2 = 8.8 = 8 4/5 tablespoons
*Tuesday, April 1, 2014 at 8:41pm*

**math**

I gave it to you ... instead of y I have "cost" instead of x I have "n" y = mx + b <-----> cost = (1/10)n + 5
*Tuesday, April 1, 2014 at 8:39pm*

**math..help again**

A photo lab manager graphed the cost of having photos developed as a function of the number of photos in the order. The graph is a line with a slope of 1/10th that passes through (10,6). Write an equation in slope-intercept form that describes the cost to have photos developed.
*Tuesday, April 1, 2014 at 8:26pm*

**math**

Please help!pam is mixing 3 1/5 batches of paint.if one batch calls for 2 3/4 tablespoons of detergent to add to the tempura powder,how many tablespoons of detergent will pam need?
*Tuesday, April 1, 2014 at 8:24pm*

**Math- urgent**

The second of two numbers is five more than the twice first. The sum of the numbers is 44. Find the numbers. Show all work.
*Tuesday, April 1, 2014 at 8:22pm*

**Math**

The answer is integer
*Tuesday, April 1, 2014 at 8:22pm*

**Math**

Venski and his brother have each agreed to mow half of the front lawn, which is a rectangle, 120 feet by 60 feet. The law mower cuts a 4-foot-wide strip. If Venski starts at one corner and mows around the lawn toward the center, on which trip around will he have half the area ...
*Tuesday, April 1, 2014 at 7:34pm*

**Math**

Multiply by 8. 8 * 2.5 = 20 feet 8 * 0.1 8 0.8 feet
*Tuesday, April 1, 2014 at 7:01pm*

**math**

102
*Tuesday, April 1, 2014 at 7:00pm*

**Math**

Do you have choices?
*Tuesday, April 1, 2014 at 6:58pm*

**Math**

Can u help me on this you have to convert inches into feet 1 inch = 8 feet and how do I do this with 2 1/4inches and also 1/10inches
*Tuesday, April 1, 2014 at 6:58pm*

**Math**

what value is equivalent to -1/4?
*Tuesday, April 1, 2014 at 6:57pm*

**math**

Fg
*Tuesday, April 1, 2014 at 6:48pm*

**math**

So if slope intercept form is y=mx+b what would this equation look like for this word problem? Thanks
*Tuesday, April 1, 2014 at 6:34pm*

**Math**

ummmhhh, how many sides does a hexagon have ?
*Tuesday, April 1, 2014 at 6:19pm*

**Math**

What is the perimeter of a regular hexagon with sides measuring 3 1/2 feet
*Tuesday, April 1, 2014 at 6:14pm*

**math**

I will assume that your given ordered pair (10,6) is of the type (number , cost), then cost - 6 = (1/10)(number -10) cost = (1/10) number -1 + 6 cost = (1/10)n + 5 so if n = 25 cost = (1/10)(25) + 5 = 7.5 units of cost (you gave no units)
*Tuesday, April 1, 2014 at 5:57pm*

**1st grade math**

Write some name for 12
*Tuesday, April 1, 2014 at 5:33pm*

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