Monday

March 30, 2015

March 30, 2015

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**Math**

In a deck of 52 cards, 3 cards are chosen. What is the probability that all three card are picture cards? (king, queen, jack) By the way, we are learning combinations and permutations. Help would be greatly appreciated!
*Monday, March 30, 2015 at 12:58am*

**Math**

3 animals need to be chosen. There are 3 tigers, 6 bears, and 4 dogs. Find the probability that: a) 1 tiger, 1 bear, and 1 dog are chosen b) 3 bears are chosen c) no tigers are chosen by the way, we are learning combinations and permutations. Thank you for your help!!!
*Monday, March 30, 2015 at 12:57am*

**Math**

There is a test with 10 questions. Each question has a choice of three answers, but only one answer is correct. How many ways are there to fill out the test? By the way, we are learning combinations and permutations
*Monday, March 30, 2015 at 12:54am*

**Math**

there are 3 sizes of pizza, 4 types of crust, and 4 types of toppings. how many one topping pizzas can be made?
*Monday, March 30, 2015 at 12:16am*

**COMMON CORE MATH**

What does method mean in math?
*Sunday, March 29, 2015 at 11:02pm*

**basic math**

I have 14 minutes left to complete this test. use the net decima equivilant to find thr net price. List price is $700 and the trade discount rate ie 10/8/6
*Sunday, March 29, 2015 at 9:21pm*

**Math**

If the flight of a rocket can be modelled by the function h=-4.9t^2+49t+2.5. Where h is height in meters and t is time in seconds. How long was the rocket above 100m? I know that you have to find the two times when the rocket hits 100m. And then subtract them. But how do you ...
*Sunday, March 29, 2015 at 9:20pm*

**basic math**

find the total debt to total assetss for the bakery for 2012. totl liabilities-5342 total assests-8754 owners capital-3412 total liabilities and owners equity-8754
*Sunday, March 29, 2015 at 8:51pm*

**basic math**

use the appropriate form of the percentage formula. findP if R=66and 2 thirds and B=150. Sorry, can't state as a fraction
*Sunday, March 29, 2015 at 8:39pm*

**Math**

The rainbow bridge of Utah is a natural arch that is approximately parabolic in shape. The arch is about 88m high. It is 84m across the base. Determine a quadratic relation, in standard form, that models the shape of the arch My answer was y=-22/441x^2+88 But the textbook said...
*Sunday, March 29, 2015 at 8:32pm*

**math**

a number increased from 460 to 621. find the percent of increase
*Sunday, March 29, 2015 at 8:24pm*

**math**

last week at a festival, a man sold 3 times as many tie-dyed shirts as silk-screened shirts. He sold 148 shirts altoether. How many tie-dyed shirts did he sell?
*Sunday, March 29, 2015 at 8:18pm*

**math**

the fany budget is: food $450, housing $300, insurance $122, personal $80, misc. $80, clothing $160, savings $150, transportation $178. what percent of take home pay is spent for education if education, savings, and misc. funds are used for education?
*Sunday, March 29, 2015 at 8:08pm*

**math**

solve for the unknown equation. 7A=14
*Sunday, March 29, 2015 at 8:02pm*

**math**

Ruth's brother just went away to college this fall and had to buy his own laundry soap and fabric softener.The laundry soap was twice the cost of the fabric softener. the total of the two items was $7.47. how much did the laundry soap and the fabric softener cost ...
*Sunday, March 29, 2015 at 7:55pm*

**math**

a large piece of cadboard, 5cm by 8cm to be made by cutting out sqaures in each corner. find dimensions that will maximize the volume? vol= (8-2w)(5-2w) (w) answer= 1cm and 10/3 cm is this correct?
*Sunday, March 29, 2015 at 7:52pm*

**Math**

Fifteen smart cars were randomly selected and the highway mileage of each was noted. The analysis yielded a mean of 47 miles per gallon and a standard deviation of 5 miles per galon. Which of the following would represent a 90% confidence interval for the average highway ...
*Sunday, March 29, 2015 at 7:34pm*

**Math**

does the series (1-(2/k))^k from k=1 to infinity converge?
*Sunday, March 29, 2015 at 7:28pm*

**basic math**

find the net price of a computer that lists for$220 if a discount rate of 10% is offered
*Sunday, March 29, 2015 at 7:18pm*

**math**

The ratio of Maya’s beads to Kayla’s beads was 12:7. After Maya bought another 28 beads and Kayla gave away 32 beads, 57of Kayla’s beads were left. a) How many more beads did Maya have than Kayla in the beginning? b) Find the new ratio of Maya’s beads to ...
*Sunday, March 29, 2015 at 7:09pm*

**math**

If Will gives Molly $9, he will have the same amount of money as her. If Molly gives Will $9, the ratio of the money she has to the money Will has will be 1 : 2. How much money does Will have in the beginning?
*Sunday, March 29, 2015 at 7:08pm*

**Math**

A new fence is constructed on three sides of a housing block with area 240 m2. The fourth side facing the road is left open. If 52 m of fencing is used, what are the dimensions of the block?
*Sunday, March 29, 2015 at 6:53pm*

**physics**

Part 2: Complete the following math problems by using the Law of Momentum Conservation. Formulas: i. Momentum = (mass) * (velocity) ii. Impulse = (Applied force) * (time) and Impulse = Change in Momentum iii. Applied Force = (Change in Momentum) / (time) iv. For multiple ...
*Sunday, March 29, 2015 at 6:27pm*

**math**

In the triangles, we have XY = 2AX = 2YB and AZ/ZC = 2/3. Find the ratio of the area of triangle YBC to the area of triangle ZYC.
*Sunday, March 29, 2015 at 5:55pm*

**math**

In quadrilateral QRTS, we have QR = 11, QS = 9, and ST=2. Sides line RQ and line ST are extended past Q and S, respectively, to meet at point P. If PS = 8 and PQ = 5, then what is RT?
*Sunday, March 29, 2015 at 5:54pm*

**math**

An Artisan has 63 kg of metal of density 7,000kg/m3. He intends to use make a rectangular pipe with external dimensions 12 cm by 15 cm and internal dimensions 10 cm by 12 cm. Calculate the length of the pipe in meters.
*Sunday, March 29, 2015 at 5:49pm*

**math**

The area of a triangle is 135 square inches. If the height is 15 inches, what is the length of the base?
*Sunday, March 29, 2015 at 5:22pm*

**math**

1. Macon Steinberg purchased a motor scooter with an installment loan that has an APR of 16 percent. The scooter sells for $1,687.00 The store financing required a 20 percent down payment and 30 monthly payments. What was the finance charge? Answer: $69.19 2. Round and ...
*Sunday, March 29, 2015 at 4:53pm*

**math**

1. Shawn Fitzgerald finds a suitable property and agrees upon a selling price of $137,900. The mortgage company requires a 20% down payment and Shawn chooses to finance the property for 30 years at 8%. What is the total amount of interest charged, rounded to the nearest whole ...
*Sunday, March 29, 2015 at 4:46pm*

**Math**

Jenna will use 1/3 of a piece of wood to make 4 shelves of equal size.
*Sunday, March 29, 2015 at 4:11pm*

**Math**

the perimeter if a rectangle is 42 centimeters. the lenght of a rectangle can be represented by (x+4), and its width acn be represented by (2x-7). what are the dimensions of this rectangle in centimeters?
*Sunday, March 29, 2015 at 4:02pm*

**math**

Stacy and Steve each have brownies of equal size,as shown. Stacy cuts her brownie into halves.Steve cuts his brownie into eighths. Which statement is true? A.Stacy has more pieces than Steve. B.Stacy has 4 pieces. C.Steve has smaller pieces than Stacy. D.Steve has fewer pieces...
*Sunday, March 29, 2015 at 3:48pm*

**math**

Lexie divided these hexagons into 2 parts and shaded one part. Which shaded parts cover half the hexagon? A.only the shaded trapezoid B.both the shaded triangle and the shaded Pentagon C.only the shaded Pentagon D.both the shaded trapezoid and the shaded Pentagon And could you...
*Sunday, March 29, 2015 at 3:40pm*

**math**

Problem: A riding stable manager is planning a nutritional diet for 9 horses. The manager finds the table below in a guide about horse health. The cost of 1000 Calories of horse feed is $0.25. What is the cost per day to feed 9 horses? (Hint: First, try writing an expression ...
*Sunday, March 29, 2015 at 3:13pm*

**Math**

Monica had a saving a account which paid her an interest rate of 4%. After she had this account for 12 years, she had received $192 in interest. How much money had she put into the account at the beginning of the 12 years? Please help me answer this question step by step
*Sunday, March 29, 2015 at 2:40pm*

**math**

Carlos has 7 1/2 acres of farmland. He uses 1/3 of the acres to graze animals and 1/5 of the acres to grow vegetables. How many acres does Carlos use for grazing animals of for growing vegetables?
*Sunday, March 29, 2015 at 2:38pm*

**math**

anyone know ogood math tutor
*Sunday, March 29, 2015 at 2:22pm*

**math**

what is moving number of 90
*Sunday, March 29, 2015 at 2:17pm*

**Math**

Determine how many triangles can be drawn. Calculate, then label, all side lengths to the nearest tenth and all interior angles to the nearest degree. a= 2.1 cm, c= 6.1 cm, <A=20 degrees. Isn't height c sin A and therefore h=2.1 cm and therefore only 1 90 degree ...
*Sunday, March 29, 2015 at 2:06pm*

**Math**

How do you know if a word problem question is asking for simple interest or compound interest? P.s. I already know the formula and what both of them mean
*Sunday, March 29, 2015 at 1:28pm*

**math**

I need help with two questions,. they both have attachments. is there another program where someone can come on and help me
*Sunday, March 29, 2015 at 12:53pm*

**Math**

Tiffany is using wooden cubes to make rectangular prisms. if she has exactly 8 wooden cubes, make a model to find the length, width, and height of the two possible rectangular prisms. i don't quite understand the question so can u help me comprehend what it's asking? ...
*Sunday, March 29, 2015 at 11:45am*

**math**

Find the lateral of the square pyramid if its height is 8m its slant is 22m and its length is 8m.
*Sunday, March 29, 2015 at 4:37am*

**math**

simplify (9-m^2)7m^3 / (3-m)14m please help i am stuck
*Sunday, March 29, 2015 at 1:44am*

**Math**

1. At midnight, you are 60 feet due north of Jonas. You run due east at ten feet per second. Jonas walks two feet per second due north. How many seconds after midnight is Jonas closest to you? What is the corresponding minimum distance separating you and Jonas? 2. We need to ...
*Saturday, March 28, 2015 at 11:00pm*

**Math**

A playground is shaped like a rectangle with a width 5 times it's length (t). What is the simplified expression for the distance between opposite corners of the playground? a- tsq root 26 b- 5t c- 26t squared d- 6t my answer is d 5t 5t+t =x x=6t
*Saturday, March 28, 2015 at 10:13pm*

**Math**

Simplify 6/sq root 3 +2 My answer is 12 - 6 sq root 3
*Saturday, March 28, 2015 at 10:06pm*

**Math**

A surfer drives his dune buggy out into the sand dunes.He follows his compass 10 miles due north and then turns due west. If he ends up approximately 35 miles from where he started how far west did he travel? a- 10 miles b- 25 miles c- 33.5 miles d- 35 miles My answer is c 33....
*Saturday, March 28, 2015 at 9:55pm*

**math**

for f(x)=x^2+3 and g(x)=ãx find (f/g) (x) the domain (f/g)
*Saturday, March 28, 2015 at 9:54pm*

**math**

50 feet of fencing is used to create a rectangular fenced-in region. if the length of the region is x, express the width, w, as a function of x
*Saturday, March 28, 2015 at 7:59pm*

**math**

Mona has $27.05 in quarters and dimes. There are 152 coins. How many quarters are there?
*Saturday, March 28, 2015 at 7:49pm*

**Math--MS SUE!**

I need help with these questions: A survey of 115 children found that 39 liked The Little Mermaid 43 liked 101 Dalmatians 56 liked Mickey Mouse 7 liked The Little Mermaid and 101 Dalmatians 10 liked The Little Mermaid and Mickey Mouse 16 liked 101 Dalmatians and Mickey Mouse 4...
*Saturday, March 28, 2015 at 7:04pm*

**Math**

Use Newton’s Method to approximate 3^(√7) to four decimal places. Use x1 = 2 as your seed. Round off intermediate iterates to five decimal place
*Saturday, March 28, 2015 at 6:53pm*

**math fractions**

which of the following pairs of numbers contains like fraction
*Saturday, March 28, 2015 at 3:38pm*

**Math**

In triangle ABC, points X and Z are on line AB and Y is on line AC such that line XY is parallel to line BC and line ZY is parallel to line XC. If AZ = 8 and ZX = 4, then what is XB?
*Saturday, March 28, 2015 at 3:31pm*

**MATH**

I am confused about the following problem. Could someone help me out? In a statistic class, the average score of midterm is 75 and the SD is 8. The average score of final is 65 and the SD is 12. The scatter diagram of the two variables (midterm/final scores) is football ...
*Saturday, March 28, 2015 at 3:11pm*

**math check**

determine whether the given vector A in M22 belongs to the span (a1,a2,a3) where a1=[1 -1; 0 3] a2=[1 1; 0 2] a3=[2 2; -1 1] and A=[5 1; -1 9] so I set up an augmented matrix , but im not sure if I set it up correctly. I made a1 a2 and a3 into columns. 1 1 2 | 5 0 0 -1 | -1 -1...
*Saturday, March 28, 2015 at 2:03pm*

**Math questions**

1. Shawn Fitzgerald finds a suitable property and agrees upon a selling price of $137,900. The mortgage company requires a 20% down payment and Shawn chooses to finance the property for 30 years at 8%. What is the total amount of interest charged, rounded to the nearest whole ...
*Saturday, March 28, 2015 at 2:03pm*

**math**

A different eight grader has been asked to work at the face painting booth every half hour. Use division to find how many eighth-graders are needed to work at the face painting booth during the fair. Show your work. I don't understand the division part, the way I did it ...
*Saturday, March 28, 2015 at 1:44pm*

**math**

110 members of a sports club play at least one of the games, football, basketball and volleyball. If 20 play football and basketball only,15 play football and basketball only, 26 play basketball and volleyball only,x play all the three games, 2x each play only one game, how ...
*Saturday, March 28, 2015 at 11:46am*

**Math**

The first term of geometric is 124.the sum of infinity is 64.find the common ratio
*Saturday, March 28, 2015 at 8:40am*

**math**

a statistics professor plans class so carefully that the lengths of his classes are uniformly distributed between 45.0 and 55.0 minutes. find the probability that a given class period runs greater than 50.75 minutes? find the probability of selecting a class that runs greater ...
*Saturday, March 28, 2015 at 1:32am*

**Math**

A gardener is mowing a 20 by 40 yard rectangular pasture using a rectangular pattern. He mows from one corner of the pasture to the corner diagonally opposite. What is the length of this pass with the mower? Give your answer in simplified ,form. a- 10 sq root 20 b- 20 sq root ...
*Saturday, March 28, 2015 at 1:18am*

**Math**

Find the exact value of the sine, cosine, and tangent of the angle 330 degrees. I know the tangent is -(square root 3)/3, but how?
*Saturday, March 28, 2015 at 12:42am*

**math**

Two positive integers aer in the ratio 2:5. If the product of the two integers is 40, find the larger integer.
*Friday, March 27, 2015 at 11:04pm*

**math **

Some functions that aren't invertible can be made invertible by restricting their domains. For example, the function x^2 is invertible if we restrict x to the interval [0,\inf), or to any subset of that interval. In that case, the inverse function is-\sqrt x. (We could ...
*Friday, March 27, 2015 at 10:45pm*

**math **

The function f(x) = cx/2 x+3 satisfies f(f(x))=x for all real numbers x\= -3/2. Find c.
*Friday, March 27, 2015 at 10:42pm*

**math**

75 pupils sat for a Science Test. The average score was 58 marks. If the average score of the girls was 62 marks and the average score of the boys was 56 marks, how many boys sat for the test?
*Friday, March 27, 2015 at 9:14pm*

**math**

Briana wants to divide 5/8 pound of soil evenly among 4 pots how much soil will be in each pot
*Friday, March 27, 2015 at 8:52pm*

**Math**

Tasha is planning an expansion of a square flower garden in a city park. If each side of the original garden is increased by 7m the new total area will be 144m^2. Find the length of each side of the original garden.
*Friday, March 27, 2015 at 8:28pm*

**Math**

What is the value of c so that y=x^2+15x+c is a perfect square trinomial?
*Friday, March 27, 2015 at 8:22pm*

**math**

the world's largest cube puzzle in Knoxville measures 6 feet on each side. The scale factor between a standard cube puzzle and largest is 1/24. Find the surface area and volume of the standard cube puzzle. Answer is 0.375ft^2/0.015625ft^3 Not sure how they figured it out i...
*Friday, March 27, 2015 at 8:18pm*

**Math**

3. A rectangular prism has a width of 92 ft and a volume of 240 ft3. Find the volume of a similar prism with a width of 23 ft. Round to the nearest tenth, if necessary. (1 point) 3.8 ft3 60 ft3 15 ft3 10.4 ft3 Please help me work this out! I'm not sure how to do this
*Friday, March 27, 2015 at 7:51pm*

**math**

The model of a new apartment building is 10 in, x 28 in x 18 in. the architect plans for the new building to be 144 times the size of the model. What will the volume and surface area of the new building be when it is completed? 10 x 18 x 28 = 5040 x 144^3 divided by 12 =...
*Friday, March 27, 2015 at 7:13pm*

**Math**

If someone could help me with this, I would appreciate it! Thanks! Directions: Determine if these two are inverses of one another. A= [ 1 1 1 3 5 4 0 -1 0] A^-1= [ 4 -1 -1 0 0 -1 -3 1 2]
*Friday, March 27, 2015 at 6:38pm*

**English 3**

In which sentence is the word punitive used correctly? A. Mario proposed an ingenious, punitive solution to the math problem. B. Teresa’s report was punitive, and she added to its interest by presenting a brilliant slide show. C. The jury’s verdict awarded the ...
*Friday, March 27, 2015 at 5:36pm*

**math**

500 tickets being sold at 2.00 per ticket but you can get 3 tickets for 5.00 if all the tickets are sold at 3 for 5.00 how much money will be earned when all tickets are sold
*Friday, March 27, 2015 at 4:08pm*

**math**

the scale listed on the box containing a model ship is 1 inch to 8 feet. which proportion can be used to find the actual length of the ship if the length of the model is 5 feet
*Friday, March 27, 2015 at 4:00pm*

**general**

anyopne know any good personal math tutors onine
*Friday, March 27, 2015 at 1:42pm*

**finite math **

Sam wants to invest the same amount at the end of every 3 months so that he will have 4000 in 3 years. The account will pay 6% compounded quarterly. How much should he deposit each quarter.
*Friday, March 27, 2015 at 1:06pm*

**math**

to the nearest mile,how many miles did the Navajo travel if 1 inch= 4 miles
*Friday, March 27, 2015 at 1:04pm*

**finite math **

A young couple saves for a down payment on a house by depositing $100 each month into an annuity that pays a 4.8% annual rate. Find the amount in the annuity at the end of 2 years.
*Friday, March 27, 2015 at 1:03pm*

**Math Help!!!**

identify the sequence as arithmetic, geometric, or neither. explain your answer. 1.6 , 0.8 , 0.4 , 0.2 ....
*Friday, March 27, 2015 at 12:51pm*

**math **

Sam is flying a kite. The length of the kite string is 80 meters, and it makes an angle of 75° with the ground. The height of the kite from the ground is... A.20.27 B.61 C.77.27
*Friday, March 27, 2015 at 12:30pm*

**Math Help!!!**

use the function rule f(X) =3x-2 find the output f(1.5). 2.5 -2.5 6.5 - 6.5
*Friday, March 27, 2015 at 12:03pm*

**Math**

Use Newton’s Method to approximate 3^(√7) to four decimal places. Use x1 = 2 as your seed. Round off intermediate iterates to five decimal places
*Friday, March 27, 2015 at 11:39am*

**Math**

Andrew has a combination of 8 quarters, dimes and nickels that add up to a value of 95 cents. How many of each coin does Andrew have?
*Friday, March 27, 2015 at 10:50am*

**math**

Why Was the Engineer Driving the Train Backwards?
*Friday, March 27, 2015 at 9:49am*

**math**

gjfwcaCh
*Friday, March 27, 2015 at 9:22am*

**math/stats**

A sample of 50 items is selected to determine whether or not to accept the hypothesis that a population means differs from a value of 20. The sample mean and standard deviation are 18 and 7, respectively. The null hypothesis is not rejected, which of the following is a ...
*Friday, March 27, 2015 at 9:20am*

**math/stats**

Which of the following statements are true? (A) In a two-tail test of hypothesis for a population mean the decision rule is to reject H0 if the test statistic lies outside of the action limits. (B) A statistical test of hypothesis is performed under the assumption that the ...
*Friday, March 27, 2015 at 9:19am*

**math**

The drama club needs to make 30 costumes for the school play. Each costume uses 3 3/4 yards of material. If a bolt of material contains 20 yards and if the fabric store sells material only in full bolts,how many bolts should the drama club buy?
*Friday, March 27, 2015 at 8:45am*

**math**

The coordinates of (triangle) ABC are A(-3,-1 ) , B( 5,1 ) and C (2,4) (i) Calculate the length of AB , BC and AC (ii) Hence, show that (triangle) is a right- angled triangle
*Friday, March 27, 2015 at 3:08am*

**math**

A class survey in a large class for first-year college students asked, “About how many minutes do you study on a typical weeknight?” The mean response of the 463 students was = 118 minutes. Suppose that we know that the study time follows a Normal distribution with ...
*Friday, March 27, 2015 at 12:29am*

**Math**

a cylinder with base area 24π cm2 and height 16 cm
*Thursday, March 26, 2015 at 11:50pm*

**Math Venn Diagram**

I need help with these questions: A survey of 115 children found that 39 liked The Little Mermaid 43 liked 101 Dalmatians 56 liked Mickey Mouse 7 liked The Little Mermaid and 101 Dalmatians 10 liked The Little Mermaid and Mickey Mouse 16 liked 101 Dalmatians and Mickey Mouse 4...
*Thursday, March 26, 2015 at 11:08pm*

**Math-Lit 143**

Suppose you buy a two-year CD for $50,000 from First Command Bank. Use the APY from the First Command Bank table to determine how much interest it earns for you at maturity.
*Thursday, March 26, 2015 at 11:06pm*

**Math**

A building has 2 floors. Each floor has 4 rooms. Each room has 6 tables. Each table has 5 typewriters. How many typewriters would have to be taken off each table so that the number of typewriters on the tables on one floor would be the same as the number of tables in the ...
*Thursday, March 26, 2015 at 10:54pm*

**Math**

A wheel turns 9times per minute its diameter is1.2 at what speed must I run to stay on top
*Thursday, March 26, 2015 at 10:46pm*

**Math**

a cylinder with base area 24π cm2 and height 16 cm
*Thursday, March 26, 2015 at 10:32pm*

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