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December 21, 2014

December 21, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**Math**

Suppose you have a ladder leaning vertically on a wall, and the ladder slips down along the wall to the floor. Consider the point in the center of the ladder. What curve will it draw in the air as the ladder slides down the wall?
*Monday, November 10, 2014 at 3:05pm*

**Math **

Find the standard equation of a parabola that has a vertical axis and satisfies the given conditions. x-intercepts −2 and 8, highest point has y-coordinate 5
*Monday, November 10, 2014 at 3:05pm*

**Math**

Ozone occurs at all levels of Earth's atmosphere. The density of ozone varies both seasonally and latitudinally. At a given city, the density D(h) of ozone (in 10^−3cm/km) for altitudes h between 20 kilometers and 35 kilometers was determined experimentally. For the ...
*Monday, November 10, 2014 at 3:04pm*

**Math 201 ( Algebra)**

A student has a number of $40 dollar and $80 dollar savings bonds to use for part of her expenses for college. The total value of the bonds is $1000. There are 7 more $40 bonds than $80 bonds. How many of each type of bond does she have?
*Monday, November 10, 2014 at 2:11pm*

**Math**

Determine the next term of sequence 3,11,19,27,35 is my line of thinking correct 43?
*Monday, November 10, 2014 at 1:34pm*

**math**

IF YOU WASH THE CAR THEN YOU CAN DRIVE IT IDENTIFY THE CONVERSE?
*Monday, November 10, 2014 at 1:32pm*

**math**

Express in positive index 1/5x^-1/2
*Monday, November 10, 2014 at 12:24pm*

**math**

the width of a rectangle is one third of the length. of the perimeter is 40 cm find the dimension of the rectangle
*Monday, November 10, 2014 at 11:12am*

**Math! Algebra 1! **

A boat is traveling in a river with a current that has a speed of 1.5 km/h. In one hour, the boat can travel twice the distance downstream as it can travel upstream. How long will it take the boat to travel 100 km in still water?
*Monday, November 10, 2014 at 11:01am*

**math**

Calculate the monthly finance charge for the credit card transaction. Assume that it takes 10 days for a payment to be received and recorded and that the month is 30 days long Balance: $200 Rate: 18% Payment: $50 Method: Adjusted balance
*Monday, November 10, 2014 at 9:20am*

**math**

The given is, m angle OHE=3 m angle HER.And find: m angle OHE and m angle HER.
*Monday, November 10, 2014 at 8:12am*

**math**

please find the ordered pair of the ff: 1.) 30 degrees 2.)60 degrees thanks... :)
*Monday, November 10, 2014 at 4:28am*

**math**

An amount of $9000 is divided among four persons A,B,C and D. The sum of shares of A,C and D is four times the share of B. The sum of shares of B and D is equal to four-fifths the sum of shares of A and C. Find the share of D. Please help!! How to frame equation for share of ...
*Monday, November 10, 2014 at 3:55am*

**math**

2*2+2-2*2-2
*Monday, November 10, 2014 at 2:46am*

**pharmacy math**

Prepare 180 g of Lotrimin 0.05% cream. In stock, you have 200 g each of Lotrimin 0.025% cream and Lotrimin 0.1% cream. How much is needed of each?
*Monday, November 10, 2014 at 1:47am*

**math(fractions)**

they read about a new trail which is being constructed.it will be the park's longest at 11/2 miles. How much longer than the Blue Trail will it be?
*Monday, November 10, 2014 at 1:41am*

**Math**

The percentage of people not covered by health care insurance in 2003 was 15.6% (Statistical Abstract of the United States, 2006). A congressional committee has been charged with conducting a sample survey to obtain more current information. a. What sample size would you ...
*Monday, November 10, 2014 at 12:16am*

**Math 112**

A student finds the value of square root of 3 on a calculator and says that this is the exact value of square root of 3 . How do you respond?
*Sunday, November 9, 2014 at 10:34pm*

**math**

5. A group of children are playing baseball in a small field. Their baseball diamond is a square with sides 14.1 m. When throwing the ball from home plate to second base how far must it go? Round your answer to one decimal place.
*Sunday, November 9, 2014 at 10:33pm*

**Math**

Brandon buys a radio for 43.99$ in a state where the sales tax is 7% How much did he pay in taxes ? What is the total Brandon pays for the radio?
*Sunday, November 9, 2014 at 8:57pm*

**Math**

A family purchased a new ski boat for $20,000. The loan agency required a down payment and financed the balance for 36 months with an APR of Determine the total finance charge and monthly payment for the loan.
*Sunday, November 9, 2014 at 8:57pm*

**math**

a person who writes ads for an inn.
*Sunday, November 9, 2014 at 8:26pm*

**math**

Let U = {9, 10, 11, 12, 13, 14, 15}, A = {9, 10, 11, 12}, B = {9, 10, 13, 14}, and C = {11, 13, 15}. List all the members of the given set. (Enter your answers as a comma-separated list.) (A ¾ B) ¿ C
*Sunday, November 9, 2014 at 7:00pm*

**Math**

For the triangle BMW, where M is 90 degrees, the hypotenuse is 13 and the leg BM is 5, find cos W.
*Sunday, November 9, 2014 at 6:55pm*

**Math**

How do you find the sonstant variable for Direct variation or k? And how would you solve? It if it was to find what x or y is
*Sunday, November 9, 2014 at 6:55pm*

**Math - Word problem**

I posted this earlier and received a reply - but the reply doesn't make sense. I drew up a picture of what was posted, but the figure comes out to finding the hypotenuse of a triangle that is 16x14 - not 16x10. What am I not seeing? Original problem: There is a room 10 ...
*Sunday, November 9, 2014 at 6:27pm*

**math**

Complete the sign for each equation 65/60 - 1 this is what the paper has on it now i think that you are supposed to put a + - * I'm not sure.
*Sunday, November 9, 2014 at 5:31pm*

**Math**

A survey carried out on 40 students about when they did their homework over the weekend F=(homework done on friday) S=(homework done on saturday/Sunday ) n(f)=20,n(s)=29 How many did both days ?
*Sunday, November 9, 2014 at 4:02pm*

**consumer math**

$799.99 with 40% off rounded to the nearest dollar
*Sunday, November 9, 2014 at 3:24pm*

**math**

Write a number sentence. There are 17 goats in the barn. 8 goats go outside. How many goats are still in the barn?
*Sunday, November 9, 2014 at 2:07pm*

**Math**

Choose a number. Multiply by 2. Add 6 to the product. Divide by 2. Then subtract 3. What is the answer? Repeat this process using two different numbers.
*Sunday, November 9, 2014 at 1:57pm*

**Math**

Please help me write this in an equation. "Tyrone bought 15.3 gal of gasoline priced at g dollars per gallon, 2 qt of pil priced at q dollars per quart, and a wiper blade priced at $3.79. Write an expression that represents the total cost of these items.
*Sunday, November 9, 2014 at 1:53pm*

**Math**

Can someone please check to see if I answered these true and false statements correctly? Thank you! 1. A triangle can have two right angles. (TRUE??) 2. An equilateral triangle is also an acute. (TRUE??) 3. A right triangle can also be an isosceles. (TRUE??) 4. A scalene ...
*Sunday, November 9, 2014 at 12:55pm*

**Math -word problem**

There is a room 10 feet high by 10 feet wide by 10 feet in length. On one wall, there is an electrical outlet 1 foot from the floor and centered five feet from each side of the wall. On the opposite wall, one foot from the ceiling and centered five feet from each side of the ...
*Sunday, November 9, 2014 at 12:33pm*

**math pre algebra**

if x =7 and y=9 and the answer is 98 what would the expression be?
*Sunday, November 9, 2014 at 12:12pm*

**math**

What is the GCF for 315 & 882
*Sunday, November 9, 2014 at 11:54am*

**math count warm up**

What positive four-digit integer has its thousands and hundreds digits add up to the tens digit. Its hundreds and tens digits add up to its once digit and its tens and ones digits add up to the two digit number formed by the thousands and hundreds digits? Answer is 1459 wanted...
*Sunday, November 9, 2014 at 10:55am*

**math**

in a group of 180 person composed of men, women and children there are twice as many men as women and three times as many women as children. how many are there each?
*Sunday, November 9, 2014 at 10:34am*

**Math**

original price is $45.75 + 8%
*Sunday, November 9, 2014 at 10:04am*

**math**

A trail mix recipe calls for 6 cups of peanuts. You have 4 small packages that each contain 2/3 cup of peanuts. How many more cups of peanuts do you need to get?
*Sunday, November 9, 2014 at 8:49am*

**math**

Find the missing number.(169,13)(49,7)(144,?)(81,9)
*Sunday, November 9, 2014 at 6:23am*

**Math**

In trapezoid CDEF, angle D = angle E=90degrees. Angle C =60 degrees, EF=4.5cm, and DE=3.5cm. What is the perimeter of the trapezoid to the nearest mm?
*Saturday, November 8, 2014 at 10:13pm*

**math**

If a certain number is added to the numerator and denominator of 1113 , the result is 1011 . Find the number
*Saturday, November 8, 2014 at 9:58pm*

**math**

which would be better for determining the sample space, a tree diagram or an area model? Justify your answer
*Saturday, November 8, 2014 at 8:18pm*

**Math Question**

In △PQR, ∠R=90◦ ,∠P=58◦, and PR=7.1 cm. Determine the area of △PQR to the nearest tenth of a square centimetre.
*Saturday, November 8, 2014 at 6:41pm*

**math**

What is 1 plus 1
*Saturday, November 8, 2014 at 6:12pm*

**Calculus (math)**

A painting in an art gallery has height h and is hung so its lower edge is a distance d above the eye of an observer. How far from the wall should the observer stand to get the best view? (In other words, where should the observer stand so as to maximize the angle \theta ...
*Saturday, November 8, 2014 at 4:34pm*

**math**

3x-2 + 2-x = - 1 ---- ---- -- 8 4 2
*Saturday, November 8, 2014 at 4:15pm*

**Math **

Carlene saves $y. Sharon save 3 times as much money as Carlene. Jason saves $50 more than Sharon. How much do they have altogether?
*Saturday, November 8, 2014 at 4:06pm*

**math**

A round, 6-ft wide hot tube is being built into a 12-ft by 30-ft rectangular deck. How much decking is needed for the surface of the deck?
*Saturday, November 8, 2014 at 10:44am*

**math**

the bearing of P from Q is 60. what is the bearing of Q from P?
*Saturday, November 8, 2014 at 7:11am*

**math**

Let r be a rational number. Is (ab)^r = a^r b^r for any real numbers a and b?
*Saturday, November 8, 2014 at 6:27am*

**math**

An urn initially contains 5 white and 7 black balls. Each time a ball is selected, it’s color is noted and it is replaced in the urn along with two other balls of the same color. Compute the probability that (a) one black and one white is selected. (b) exactly two black ...
*Saturday, November 8, 2014 at 5:13am*

**math**

2 six sided dice are throne together.what is the probability that a total of 10 is thrown.can u show me how to do please ,thanks
*Saturday, November 8, 2014 at 4:49am*

**math**

Concrete is made by mixing cement and sand in the ratio 3:1:15 how much sand would be needed to make 125 tonnes of concrete
*Saturday, November 8, 2014 at 4:45am*

**Calculus (math)**

A boat leaves a dock at 2:00 P.M. and travels due south at a speed of 15 km/h. Another boat has been heading due east at 20 km/h and reaches the same dock at 3:00 P.M. How many minutes past 2:00 P.M. were the boats closest together?
*Saturday, November 8, 2014 at 1:04am*

**Math**

Use inverse trigonometric functions to find a solution to the equation in the given interval. Then find solutions? cos x = -0.6 , 0<= theta <=2pi Give your answers in increasing order. Round your answers to two decimal places x = x =
*Saturday, November 8, 2014 at 12:47am*

**Calculus (math)**

A painting in an art gallery has height h and is hung so its lower edge is a distance d above the eye of an observer (as in the figure). How far from the wall should the observer stand to get the best view? (In other words, where should the observer stand so as to maximize the...
*Friday, November 7, 2014 at 11:07pm*

**math**

How many revolutions will a 5" id x 5/8 id pulley on a electric motor shaft rotating at 1700 rpms.
*Friday, November 7, 2014 at 11:03pm*

**Calculus (math)**

A boat leaves a dock at 2:00 P.M. and travels due south at a speed of 15 km/h. Another boat has been heading due east at 20 km/h and reaches the same dock at 3:00 P.M. How many minutes past 2:00 P.M. were the boats closest together?
*Friday, November 7, 2014 at 11:01pm*

**math again (last question help!!!)**

three bookshelves contain a total of 35 books. The first and second shelves contain a total of 20 books. the second and third shelves contain a total of 28 books. how many books are on the second shelf then?
*Friday, November 7, 2014 at 8:46pm*

**math**

A STORE OWNER PLANNED to raise the price of a T-shirt by 10% - he accidently labeled 10% though. The new price is what percent less than the raised price? Mixed number and omit the % sign.
*Friday, November 7, 2014 at 8:45pm*

**math**

Olive bought a used snow blower for $120. He charges $10 to clear a driveway of snow. It costs him 500 in gasoline to clear a driveway. After Olvie clears 13 driveways he is finally $_____ ahead,
*Friday, November 7, 2014 at 7:54pm*

**Math**

If a bank offers a rate of 4.5% compounded semiannually, how much should you deposit to accumulate 50,000 in 15 years
*Friday, November 7, 2014 at 7:41pm*

**Physics Math**

How many joules of heat need to be removed to condense 1.50 kg of steam at 100°C -Specific Heat for steam is 2000 J/kg°C-
*Friday, November 7, 2014 at 7:32pm*

**word problem math b**

A rectangular field is 80 m long and 60 m wide. If fence posts are placed at the corners and are 10 m apart along the four sides of the field, how many posts are needed to completely fence the field?
*Friday, November 7, 2014 at 7:11pm*

**Math help**

a cube has a volume of 125cm ^3. What is the area in cm^2 of one face of the cube? (^ = Exponent)
*Friday, November 7, 2014 at 7:08pm*

**Math Trig Please Help!!!**

Find exact values for all the solutions to the equation cos theta = sqrt 3/2 for -2pi <= theta <= 2pi Theta = Theta = Theta = Theta =
*Friday, November 7, 2014 at 7:00pm*

**Math**

A company's sales are seasonal with the peak in mid-December and the lowest point in mid-June. The company makes $110000 in sales in December, and only $30000 in June. A) Find a trigonometric function, s=f(t) , representing sales at time t months after mid-January. 40000 +...
*Friday, November 7, 2014 at 6:34pm*

**Math**

Explain what each of the following expressions means. Evaluate each expression for x = 0.5. Some of these may be asking for inverse and not raising to exponent of -1. Enter the exact value for angles, and round any values to three decimal places. sin^-1 x = ? sin(x^-1) = ? (...
*Friday, November 7, 2014 at 6:17pm*

**math please help me**

64% of 75 tiles 2 doctors is ______ % of 25 doctors 360 kilometers is 24% of kilometers 80% of _______ games is 32 games 75% of ________ peaches is 15 peaches
*Friday, November 7, 2014 at 6:08pm*

**math help**

Steve plants ten trees every three minutes. If he continues planting at the same rate, how long will it take him to plant 2500 trees? Express answer as a decimal in terms of hours.
*Friday, November 7, 2014 at 6:06pm*

**Math Help!**

tan (2theta + 8) = -0.489 theta = ? i'm on my last attempt to solve this problem on my hw. I tried subtracting 8 from -0.489 then trying to find the inverse but no luck.... I got -4.245 as one of my answers,-0.7267, no luck so far :(
*Friday, November 7, 2014 at 5:42pm*

**Math**

Felix used a scale factor of 1 inch = 2.5 feet to draw model of his backyard, as shown below. He is planning to build a fence around the yard. If the cost of the fence is $3.50 per foot, how much will it cost him to build the fence? Length 2.75in. width 1.25in Is my answer ...
*Friday, November 7, 2014 at 5:38pm*

**Elementary Math**

X+(x+)+ (X+2)=3x+ 3 then anotgher student wrote (X-1)+ X + (X+1)=3X which one is correct
*Friday, November 7, 2014 at 5:20pm*

**math**

partb : a shopper brought four of the same shirt and paid 48$ after the 40% discount . what was the original price of one of the shirts
*Friday, November 7, 2014 at 5:14pm*

**Math**

theta = 16 pi / 5 How to find the reference angle in radians? Do i have to use degree to pi conversion?
*Friday, November 7, 2014 at 5:12pm*

**Math**

cos x = -0.6 , 0 <= theta <= 2pi Use inverse trigonometric functions to find a solution to the equation in the given interval. Then find all other solutions to the equation on this interval. x = x =
*Friday, November 7, 2014 at 4:51pm*

**math**

If you can earn a 4% average return on your investments, how much invested capital must you have to earn $53000.00 per year.
*Friday, November 7, 2014 at 4:20pm*

**math**

James wishes to make a deposit. He has these bills: 16 ones, 5 fives, 5 tens, and 3 twenties. He has 4 nickels, 20 dimes, and 16 quarters. James has checks for $66 and $53.75. James wants to receive $50 in cash. What should he enter on the TOTAL line? $
*Friday, November 7, 2014 at 3:54pm*

**math**

Create an addition word problem and a subtraction word problem using fractions. Show how to find the solution to each problem. Once you find the solutions to your problems, rewrite the solutions as either a terminating or nonterminating decimal.
*Friday, November 7, 2014 at 3:37pm*

**Math**

solve for 0 <= t <= 2pi cos t = 1/2 Give your answers in increasing order t = t =
*Friday, November 7, 2014 at 1:49pm*

**Math Trig Help**

sin theta = x/3, with theta in the first quadrant, find the expression for cos theta and tan theta. Answers will be in algebraic terms of x. Give exact answers with 0 < theta <pi/2 (0 less than or equal to theta, less than or equal to pi/2 Cos theta ? Tan Theta?
*Friday, November 7, 2014 at 1:27pm*

**Math**

Sin theta = 1/4, what is sec theta?, tan theta? give exact answers for 0 less than or equal to theta less than equal to pi/2
*Friday, November 7, 2014 at 1:25pm*

**Math**

sec 7pi/4 without a calculator Find the exact answer
*Friday, November 7, 2014 at 1:24pm*

**Math**

How Does finding the square root of a number compare to finding the cube root of a number
*Friday, November 7, 2014 at 12:46pm*

**Math**

Which function could be the parent of y = 3|x| ? A)y = |x| B)y = 3x C)y = x3 D)y = 3 + x
*Friday, November 7, 2014 at 12:18pm*

**Math**

How can you sketch the graph y = |x - 2| ? A)Translate the graph of y = |x| two units up. B)Translate the graph of y = |x| two units down. C)Translate the graph of y = |x| two units left. D) Translate the graph of y = |x| two units right.
*Friday, November 7, 2014 at 12:14pm*

**Math Question**

Laura was given two points (3,-2) and (-2,4) and was asked to create an equation that represents the line that passes through these points. Write two equations that she could use.
*Friday, November 7, 2014 at 11:34am*

**math**

Mrs. Clarkson designed a rectangular garden with a length of 15 meters and a width of 8 meters. She plans to build a walkway through the garden from one corner to the next. What measure is closest to the length of the diagonal walkway?
*Friday, November 7, 2014 at 9:54am*

**math**

How do you find the answer to 35.5×18.76
*Friday, November 7, 2014 at 9:42am*

**math**

I can't understand rounding rules of numbers Can you simply explain it ?
*Friday, November 7, 2014 at 9:24am*

**math**

Bert is 5 years older than twice the age of mario. Nine years ago, the sum of their ages is 50. How old is each now?
*Friday, November 7, 2014 at 7:58am*

**math**

1. A farmer has 1000 acres of land on which corn, wheat, or soybeans can be grown. He also knows that each acre of corn requires 5 days of labor and yields a profit of $20. Each acre of wheat requires 9 days of labor and yields a profit of $40. Each acre of soybeans requires ...
*Thursday, November 6, 2014 at 11:47pm*

**MATH**

1: The table shows the low outside temperatures for Monday, Tuesday, and Wednesday. By how many degrees did the low temperature drop from Tuesday to Wednesday? 2) The table shows the low outside temperatures for Monday, Tuesday, and Wednesday. By how many degrees did the low ...
*Thursday, November 6, 2014 at 11:45pm*

**MATH**

A biologist is recording the loss of fish in a pond. She notes the number of fish, f, in the pond on June 1. On July 1 there were 63 fish in the pond, which is 52 fewer fish that were in the pond on June 1. Which equation represents this situation?
*Thursday, November 6, 2014 at 11:36pm*

**MATH**

1: The table shows the low outside temperatures for Monday, Tuesday, and Wednesday. By how many degrees did the low temperature drop from Tuesday to Wednesday? 2) The table shows the low outside temperatures for Monday, Tuesday, and Wednesday. By how many degrees did the low ...
*Thursday, November 6, 2014 at 11:27pm*

**Math**

Adan used the three fractions to make a circle graph colored each a different color. What fraction of the graph is not colored?Explein your answer 2/5 ,1/6 ,and 1/3. Can somebody help me!!!!
*Thursday, November 6, 2014 at 11:12pm*

**Math **

Groups in math class have 4 green marbles, 6 yellow marbles, and 10 black marbles. Each group pulls out a marble, records it, and then replaces it 50 times. The class complies its data. how many times can you expect to pull out a green marble with 1000 pulls?
*Thursday, November 6, 2014 at 10:43pm*

**math**

natasha had 7/8 gallon of paint. her brother ivan took 1/4 gallon to paint his model boat. natasha needs at least 1/2 gallon to paint her bookshelf. did ivan leave her enough paint?
*Thursday, November 6, 2014 at 10:39pm*

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