Thursday

April 24, 2014

April 24, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**math**

The ratio of Steve's age to Tims age is 6:7. If Steve is 84, how old is Tim?
*Wednesday, April 9, 2014 at 4:42pm*

**math**

how do you type up a spaceship in space
*Wednesday, April 9, 2014 at 4:40pm*

**math **

Shania is having trouble understanding her algebra assignment. To help her understand, she asks Mark why is x^2*y^3 not equal to (x,y)^5 Which of the following responses would be best for Mark to give? A. “You should multiply the exponents rather than add them. The ...
*Wednesday, April 9, 2014 at 4:18pm*

**math**

A researcher is performing a hypothesis test. The null hypothesis is that μ=10 and the alternative hypothesis is that μ<10. A sample of 18 individuals was collected and the t-based test statistic calculated from the data was -2.105. What is the approximate p-value...
*Wednesday, April 9, 2014 at 4:15pm*

**Math**

1. What is the solution of the matrix equation? |9 4| |-9 -6| | | X =| | |2 1| |-1 -8| A.) |5 -26| |9 -60| B.) |-5 26| |-1 -8| C.) |-5 26| |9 -60| D.) |9 26| |9 1| I think the Answer is B. But I am unsure. Thanks.
*Wednesday, April 9, 2014 at 4:10pm*

**Math**

A bank lent $1.2 million for the development of three new products, with one loan each at 6%, 7%, and 8%. The amount lent at 8% was equal to the sum of the amounts lent at the other two rates, and the bank's annual income from the loans was $88,000. How much was lent to ...
*Wednesday, April 9, 2014 at 1:38pm*

**Math**

-sqrt60 How to do this?
*Wednesday, April 9, 2014 at 1:18pm*

**Math**

If RS = 24, UT = x + 6, RU = y + 3, and ST = 18, find the values of x and y. A. x = 30, y = 21 B. x = 30, y = 15 C. x = 18, y = 15 D. x = 1, y = 7
*Wednesday, April 9, 2014 at 1:00pm*

**math PLEASE HELP!!!!!**

Rectangular Prism: Length: 41 ft Width: 32 ft Height: 49 ft 1. Find the surface area for the given prism. (1 point) 7,154 ft^2 2,624 ft^2 9,778 ft^2 8,432 ft^2. Find the volume of the same prism. (1 point) 64,288 ft^3 31,312 ft^3 32,009 ft^3 323,208 ft^3 i know the formulas ...
*Wednesday, April 9, 2014 at 12:56pm*

**Math**

Use synthetic division to determine which pair of integers provide both a lower and an upper bound for the zeros of f(x)= x^5-2x^4-25x^3+50x^2+144x-290 PLEASE SHOW WORK!!!
*Wednesday, April 9, 2014 at 12:49pm*

**math**

An efficiency expert has calculated that about 9.5% of the articles produced in a manufacturing plant are defective. This is equivalent to expressing the defective articles as a. 9 out of 15 b. 9 out of 50 c. 10 out of 95 d. 19 out of 100 e. 19 out of 200 please answer and ...
*Wednesday, April 9, 2014 at 12:26pm*

**math**

If a workman receives time and a half for overtime, 25 hours of overtime would be the equivalent of how many regular working hours? a. 6 b. 12 c. 18 d. 30 e. 37.5 please answer and explain
*Wednesday, April 9, 2014 at 12:00pm*

**math**

A father can do a job as fast as two sons working together. If one sone does the job alone in three hours and the other does it alone in six hours, how many hours does it take the father to do the job alone? a. 1 b. 2 c. 3 d. 4 e. 4 1/2 please answer and explain
*Wednesday, April 9, 2014 at 11:56am*

**Math Accounting**

Determine the proposal’s appropriateness and economic viability. For all scenarios, assume spending occurs on the first day of each year and benefits or savings occurs on the last day. Assume the discount rate or weighted average cost of capital is 10%. Ignore taxes and ...
*Wednesday, April 9, 2014 at 11:53am*

**math**

HHow many pupils are there in a class if two pupils remain after four rows of seats are filled, and nine pupils remain after three rows of seats are filled? a. 21 b. 22 c. 28 d. 30 e. 32 please answer and explain
*Wednesday, April 9, 2014 at 11:42am*

**math**

Sara drives 72 miles on 3.2 gallons of gas. She uses this information to calculate how many miles per gallon she can drive. Using this result, how many miles can Sara drive on 13.3 gallons of gas?
*Wednesday, April 9, 2014 at 11:12am*

**math**

10t-640/t^2 = 0 Thank you so much for huge help:)))
*Wednesday, April 9, 2014 at 10:53am*

**math**

Weights of the vegetables in a field are normally distributed. From a sample Carl Cornfield determines the mean weight of a box of vegetables to be 180 oz. with a standard deviation of 8 oz. He wonders what percent of the vegetable boxes he has grouped for sale will have a ...
*Wednesday, April 9, 2014 at 2:24am*

**math**

A man has 21 coins in his pocket, all of which are dimes and quarters. If the total value of his change is 405 cents, how many dimes and how many quarters does he hav
*Wednesday, April 9, 2014 at 2:15am*

**math**

suppose there are 2 pieces of the cake left over, but you don't know how many pieces were in the whole cake.Explain how you could find the number of pieces in the whole cake if Taylor told you 1/6 of the cake was left.You may show your work in a drawing.
*Wednesday, April 9, 2014 at 12:28am*

**math**

The balance sheet is used to project future cash receipts t or f
*Tuesday, April 8, 2014 at 11:53pm*

**math**

We use the normal distribution to make estimates about a population.t or f
*Tuesday, April 8, 2014 at 11:42pm*

**Math **

To win a certain board game, a tossed token must land on a shaded square on the board. The probability of winning is approximately 23%. If the board has a total area of 130 congruent squares, how many of these squares are shaded?
*Tuesday, April 8, 2014 at 11:20pm*

**Math**

A number cube with numbers 1 through 6 is rolled. Find the given probability. P(complement of 4) A. 1/6* B. 5/6 C. 2/6 D. 4/6
*Tuesday, April 8, 2014 at 11:14pm*

**Math**

A number cube with numbers 1 through 6 is rolled. Find the given probability. P(number¡Ý3) A. 4/6 B. 1/6 C. 2/6 D. 5/6*
*Tuesday, April 8, 2014 at 11:12pm*

**math**

For its fleet of trucks, Overland Transport, Inc., purchased 580 tires rated at 50 pounds each. The tires had a retail price of $85 each. The sales tax in 4.5%, and the federal excise tax is $0.15 per pound. A. What are the amount of sales tax per tire and the total sales tax...
*Tuesday, April 8, 2014 at 11:07pm*

**9th grade math**

4x^2=80x-400
*Tuesday, April 8, 2014 at 10:57pm*

**9th grade math**

x^2+8x+16=25
*Tuesday, April 8, 2014 at 10:56pm*

**9th grade math**

4m^2-24m+36=0
*Tuesday, April 8, 2014 at 10:51pm*

**math**

Brendan got 32 questions correct on his social studies test and missed 8 questions. What % did he have correct?
*Tuesday, April 8, 2014 at 10:39pm*

**math**

Frank owns 250 acres of land. If he divides the land into 1/3 acre plots, how many plots will he have?
*Tuesday, April 8, 2014 at 10:38pm*

**math**

50 in.2 to cm2
*Tuesday, April 8, 2014 at 10:37pm*

**math**

How many centimeters is a piece of paper that measures 12 inches?
*Tuesday, April 8, 2014 at 10:30pm*

**math**

Name the position of the first digit of the quotient. 1. 832/4 2. 217/7 I don't understand. Someone please explain to me.
*Tuesday, April 8, 2014 at 10:24pm*

**math**

Sandra needs 2 3/4 cups of flour for one kind of cookie and 3 3/8 cups for another kind. How much would she need for both kinds?
*Tuesday, April 8, 2014 at 10:20pm*

**Math**

Anita says the plus sign + forms 2 pairs of vertical angles. Charles says it forms 2 pairs of congruent angles. Who is correct? Explain.
*Tuesday, April 8, 2014 at 10:10pm*

**5th grade math **

On Friday and Saturday, 618 people attended a car show. If the same number of people went each day,how many people attended the car show on Saturday? My answer is 1,236. Is my answer correct? If not please show me how to work this problem.
*Tuesday, April 8, 2014 at 10:07pm*

**Math**

Pay can buy a package of 20 balloons for $6 or a package of 50 for $9. How much cheaper is each balloon in the package of 50 balloons?
*Tuesday, April 8, 2014 at 10:01pm*

**math**

What % of $3.75 is $1.50?
*Tuesday, April 8, 2014 at 9:46pm*

**Math**

A number cube with numbers 1 through 6 is rolled. Find the given probability. P(number<2) A. 1/6* B. 2/6 C. 4/6 D. 3/6
*Tuesday, April 8, 2014 at 9:46pm*

**math**

Brendan got 31 questions correct on his social studies test and missed 9 questions. What percent did he have correct?
*Tuesday, April 8, 2014 at 9:45pm*

**math**

Mrs. Grace has 10 sandwiches that are 4 inches in diameter. They can fit exactly into a different box... Need to show work in box, help, can't seem to figure this out
*Tuesday, April 8, 2014 at 9:42pm*

**Math (Please Help Ms. Sue)**

what happens to the surface area of a rectangular prism when each of the dimensions is doubled? 1. it doubles 2. it quadruples 3. it is six times greater 4. it is halved
*Tuesday, April 8, 2014 at 9:03pm*

**Math**

what happens to the surface area of a rectangular prism when each of the dimensions is doubled? 1. it doubles 2. it quadruples 3. it is six times greater 4. it is halved (I picked 2. Quadruples)
*Tuesday, April 8, 2014 at 8:55pm*

**math**

Which of the following decimals is equivalent to three and ten hundredths? a)0.30 b)0.31 c)3.01 d)3.1 My answer is (d.)
*Tuesday, April 8, 2014 at 8:55pm*

**Math**

Drinking 8 fluid ounces of milk provides 270.0 milligrams of calcium. How many fluid ounces of milk provide 72.5 milligrams of calcium? Round to the nearest tenth.
*Tuesday, April 8, 2014 at 8:33pm*

**math**

For its fleet of trucks, Overland Transport, Inc., purchased 580 tires rated at 50 pounds each. The tires had a retail price of $85 each. The sales tax in 4.5%, and the federal excise tax is $0.15 per pound. A. What are the amount of sales tax per tire and the total sales tax...
*Tuesday, April 8, 2014 at 8:25pm*

**Math**

Can someone show me a model of what 8 divided by 0.3 would look like? Thanks
*Tuesday, April 8, 2014 at 8:17pm*

**Math **

7/12, 3/4, and 2/3 in order which one is the smallest to the greatest?
*Tuesday, April 8, 2014 at 8:03pm*

**MATH VERY URRRGENT!!!!!!!!!!!!!**

Create two different situations: one in which you use combinations and one in which you use permutations. Include specific details and an explanation about what makes each situation either a combination or permutation.
*Tuesday, April 8, 2014 at 7:48pm*

**Math - Please Check My Answers**

Please help me by checking the following answers for me(There are 3 problems that I need someone to check). 3. A student is attempting to solve the equation below for the variable x. Which of the statements below best applies to the mathematical work shown? Given √(4x-6...
*Tuesday, April 8, 2014 at 7:42pm*

**Math**

How does 26.666 equal 26.2? Could you show me a model of how to do this? Thank You
*Tuesday, April 8, 2014 at 7:41pm*

**Math**

A bank lent $1.2 million for the development of three new products, with one loan each at 6%, 7%, and 8%. The amount lent at 8% was equal to the sum of the amounts lent at the other two rates, and the bank's annual income from the loans was $88,000. How much was lent to ...
*Tuesday, April 8, 2014 at 7:15pm*

**math**

If Sue worked 6 3/4 hours on Monday, 4 hours on Tuesday, 7 3/4 hours on Wednesday, 8 hours on Thursday, and 5 1/2 hours on Friday, calculate her weekly wage at $7.20 per hour.
*Tuesday, April 8, 2014 at 7:13pm*

**Gr 10 math - finding vertices**

I know how to do the equation for one line in a shape, but how do I find them for two?
*Tuesday, April 8, 2014 at 7:13pm*

**Math**

A 3500-seat theater sells tickets for $75 and $110. Each night the theater's expenses total $245,000. When all 3500 seats sell, the owners want ticket revenues to cover expenses plus earn a profit of 25% of expenses. How many tickets of each price should be sold to achieve...
*Tuesday, April 8, 2014 at 7:13pm*

**math**

Frank owns 300 acres of land. If he divides the land into 1/2 acre plots, how many plots will he have?
*Tuesday, April 8, 2014 at 7:05pm*

**Math**

Is 2/3 greater than 3/4
*Tuesday, April 8, 2014 at 6:33pm*

**math**

36 is what percent of 143?
*Tuesday, April 8, 2014 at 6:26pm*

**math**

Jamal writes the letters K-A-N-S-A-S on cards and then places the cards in a hat. What are the odds against picking an S?
*Tuesday, April 8, 2014 at 5:27pm*

**Math**

If the circumference of a circle is 18 ( pie symbol), what is the area of the circle? Thanks
*Tuesday, April 8, 2014 at 5:04pm*

**math**

The product of square of a number and the cube of the same number is equal to 32 what is that number
*Tuesday, April 8, 2014 at 4:23pm*

**3rd grade math**

Explain how you know 6/6 and 1 are equivalent?
*Tuesday, April 8, 2014 at 4:14pm*

**Math - Check My Answers, Please**

Please help me by checking the following answers for me. 3. A student is attempting to solve the equation below for the variable x. Which of the statements below best applies to the mathematical work shown? Given √(4x-6)=12, I square both sides, so (√4x)^2-6=&#...
*Tuesday, April 8, 2014 at 3:29pm*

**math**

Write an equation for the realartionship. Tell what the variables represent. It takes Li 1 hour to drive 65 miles, 2 hours to dirve 130 miles, and 3 hours to drive 195 miles.
*Tuesday, April 8, 2014 at 3:10pm*

**Math (help)**

what is the length of the radius of the LARGER cone(the LARGER cone has a slant height of 15) when the SMALLER cone has a radius of 8 and a slant height of 12ft ,please help.
*Tuesday, April 8, 2014 at 2:07pm*

**Math**

8 people are going to sit on 6 chairs. Two of them John and Kelly can't sit next to each other. How many ways can you put the people to seats? The answer is 10080, but I can't figure out how to calculate it.
*Tuesday, April 8, 2014 at 2:06pm*

**Math**

Write the expression using a single exponent. 2^2 * 2^8 A. 4^10 B. 2^10 C. 4^16 D. 2^16 Write the expression using scientific notation. (2.5 * 10^4)(4 * 10^3 A. 10 * 10^7 B. 10 * 10^8 C. 1 * 10^8 D. 10 * 10^12
*Tuesday, April 8, 2014 at 2:04pm*

**math multiple choice**

. A man pays 60 cents for every 200m3 of gas used, plus a fixed charge of $13.75.How much does he pay when he uses 55 000m3 gas?
*Tuesday, April 8, 2014 at 1:19pm*

**Math**

In the expression -7x - 5x^2 + 5, what is the coefficient of x? A. 7 B. 5 C. -5 D. -7
*Tuesday, April 8, 2014 at 12:44pm*

**Math**

1. Add or subtract. (4x^2 + 15x -3) - (-3x^2 + 5) A. 7x^2 + 15x - 8 B. x^2 + 12x + 2 C. x^2 + 15x - 8 D. 7x^2 + 8 2. Simplify the polynomial. -3f^2 + 4f - 3 + 8f^2 + 7f + 1 A. 5x^2 - 4x - 2 B. -5x^2 + 8x - 2 C. 5x^2 - 8x + 2 D. -9x^2 - 8x + 2 3. Add or subtract. (2x^2 + 6x + 1...
*Tuesday, April 8, 2014 at 12:20pm*

**math**

Activity Boys Girls Total Walk 3 6 Bike 5 3 skateboard 2 1 3. What percentage of the total students chose skateboarding? (1 point) 10% 20% 30% none of these *** 4. What percentage of the boys chose walking? (1 point) 30% **** 45% 25% none of these 5. What percentage of the ...
*Tuesday, April 8, 2014 at 11:49am*

**math**

if a 30 ft ladder makes a 65 degree angle with the ground, how many fee up the wall will it reach
*Tuesday, April 8, 2014 at 9:35am*

**Math**

In how many words can you form the word ALGEBRA?
*Tuesday, April 8, 2014 at 7:18am*

**Math**

The teachers in a childcare center are taking their children for a field trip.if each bus takes 40 children, there will be 16 vacant seats. If each bus takes 36 children, 20 children will not get any seats. How many buses are there?
*Tuesday, April 8, 2014 at 4:45am*

**math**

Two angles are complementary. One contains 30° more than the other. Find both angles
*Tuesday, April 8, 2014 at 1:44am*

**Math (help)**

how to find the surface area of a cone with a diameter of 8 and a slant height of 7? with steps? please
*Tuesday, April 8, 2014 at 1:05am*

**Math**

Please help me with the following by checking my answer. The length of the hypotenuse of an isosceles right triangle is √6 inches. How long, in inches, are the legs of the triangle? A. 3 B. 6 C. √3 - (This is my answer.) D. √6 I am not sure on my answer, ...
*Tuesday, April 8, 2014 at 12:47am*

**Business math**

The Treasury Department auctioned $21 billion in 3-month bills in denominations of $10,000 at a discount rate of 4.965%. What would be the effective rate of interest? (Use calendar year. Do not round intermediate calculations. Round your answer to the nearest hundredth ...
*Monday, April 7, 2014 at 11:51pm*

**business Math**

Please help? The Treasury Department auctioned $21 billion in 3-month bills in denominations of $10,000 at a discount rate of 4.965%. What would be the effective rate of interest? (Use calendar year. Do not round intermediate calculations. Round your answer to the nearest ...
*Monday, April 7, 2014 at 11:35pm*

**business Math**

Carl Sonntag wanted to compare what proceeds he would receive with a simple interest note versus a simple discount note. Both had the same terms: $19,500 at 8% for 2 years. Use ordinary interest as needed. a. Calculate the simple interest note proceeds. Can someone help me? ...
*Monday, April 7, 2014 at 11:34pm*

**business Math**

You were offered the opportunity to purchase either a simple interest note or a simple discount note with the following terms: $33,353 at 7% for 18 months. a. Calculate the effective interest rate. (Do not round intermediate calculations. Round your final answer to the ...
*Monday, April 7, 2014 at 11:33pm*

**Business Math**

Can someone help me with this problem: On September 5, Sheffield Company discounted at Sunshine Bank a $9,000 (maturity value), 120-day note dated June 5. Sunshineâ€™s discount rate was 9%. (Use Days in a year table.) What proceeds did Sheffield Company receive...
*Monday, April 7, 2014 at 11:31pm*

**Math **

Their are 18 green blocks in a bag.their are 3 white blocks for every 2green blocks.witch proportion can be used to find w,the total number of white blocks in the bag?
*Monday, April 7, 2014 at 11:00pm*

**Math**

Please help me with the following by checking it. Solve for x: √(2x^2+5)=2 A. ±1 B. √2 - (This is my answer.) C. ±2 D. None of the above. I am not sure about my answer, can someone check it please. Any help will be greatly appreciated.:)
*Monday, April 7, 2014 at 10:55pm*

**Math help**

how to find the surface area of a cone with a diameter of 8 and a slant height of 7?
*Monday, April 7, 2014 at 10:49pm*

**Math help**

How do you find the volume of a cylinder with a diameter of 34m and a height of 27m?
*Monday, April 7, 2014 at 10:01pm*

**Math help Please**

My willy bird is 6 inches and has a mass, M, of 2.1kg. During penetration, it reaches a force or 15.0 N with a coefficient of friction 0.75. Calculate its rotational velocity given no respect to time. How much work is done in a thirty second period?
*Monday, April 7, 2014 at 9:51pm*

**math**

a storage room measures 11.35 feet in length by 9.5 feet in width by 8.3 feet in height. it contains a box which is 4.25 feet in length 6.5 feet in width and 4.0 feet in height.how many cubic feet of storage space are left in the room rounded to the nearest cubic foot
*Monday, April 7, 2014 at 9:49pm*

**Math**

Monique is making cookies for the pajama party at her house. She has 3-1/2 cups of sugar. The recipe calls for 3/4 cup of sugar for one batch of cookies. Write an equation that can be used to find c, the total number of batches of cookies she can make.
*Monday, April 7, 2014 at 9:28pm*

**Math**

Jim paid $ 5.55 for 1 notepad and 7 pencils. Anne paid $ 12.28 for 3 notepads and 2 pencils. How much does each notepad cost? Show all work
*Monday, April 7, 2014 at 9:13pm*

**Math **

What is the distance between (-2,-5) and its reflection over the x-axis?
*Monday, April 7, 2014 at 9:07pm*

**Math**

At a baseball stadium, every eighth person received a coupon for free popcorn. Every thirtieth person received a free hot dog. WHich person was the first to receive both free gifts?
*Monday, April 7, 2014 at 8:50pm*

**math word problem PLEASE HELP**

Susan uses 15 rolls of ribbon to decorate 10 wedding baskets. Each roll of ribbon is 5 3/8 yards long. After she decorates the baskets, she decides to cut off another 3/4 yard from the ribbon of each basket. Write and simplify an expression to fin out how much ribbon was used ...
*Monday, April 7, 2014 at 8:42pm*

**Math**

Ms.Smith wrote the division problem shown below, using a box to represent the missing digit. What value can replace the box in the quotient to complete the division problem? 132 divided by 12 and i got 11 but does 11 answer the question or do i put 1 for the value left?
*Monday, April 7, 2014 at 8:30pm*

**math**

5.052 x 10^14
*Monday, April 7, 2014 at 8:16pm*

**Math**

Find the exact solutions of the equation In The interval.. Sin 2x -sin x=0
*Monday, April 7, 2014 at 8:10pm*

**science/math**

1. A light ray strikes a mirror at an angle of 42° from the surface of the mirror. What angle does the reflected ray make with the normal Ans. 42° 2. A ray of light hits a mirror at 27° from the normal. What is the angle between the reflected ray and the normal. ...
*Monday, April 7, 2014 at 8:08pm*

**Math**

The percentage of a certain brand of computer chips that will fail after t years of use is estimated to be P(t) = 100(1 − e−0.12t ). What percentage of this brand of computer chips are expected to be usable after 3 years? (Round your answer to one decimal place.)
*Monday, April 7, 2014 at 7:50pm*

**Math**

Phosphorus-32 (P-32) has a half-life of 14.2 days. If 200 g of this substance are present initially, find the amount Q(t) present after t days. (Round your growth constant to four decimal places.) How fast is the P-32 decaying when t = 21.5? (Round your answer to three decimal...
*Monday, April 7, 2014 at 7:49pm*

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