Thursday

August 28, 2014

August 28, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**Math**

If Kate is flying a kite on the field and she lets out 20 meters of string and at the same time her friend Abigail is watching in the distance The angle of elevation of the kite from her position is 65 degrees And the angle of elevation of the kite from Abigail's position ...
*Monday, June 9, 2014 at 11:00am*

**MATH**

You have five $1 bills, four $5 bills six $10 bills and three $20 bills. You select a bills at random. Without replacing the bill, You choose a second bill. What is P($1, then $10)?
*Monday, June 9, 2014 at 10:47am*

**MATH**

You have five $1 bills, four $5 bills six $10 bills and three $20 bills. You select a bills at random. Without replacing the bill, You choose a second bill. What is P($1, then $10)?
*Monday, June 9, 2014 at 10:46am*

**Math**

At a carnival, Linda bought packs of tickets each. She has used of the tickets so far. How many tickets does she have left?
*Monday, June 9, 2014 at 10:43am*

**MATH**

A spinner is divided into 10 equal sections numbered from 0 to 10. You spin the spinner once. What is P(divisible by 3)? 1/3 1/2 2/5 3/10 The probability of a certain baseball player hitting a foul ball is 1/4. How many foul balls would you expect her to hit after 80 swings? 4...
*Monday, June 9, 2014 at 10:18am*

**math. **

Solve the double inequality 0<(x+3)/2<5
*Monday, June 9, 2014 at 9:00am*

**math helpppp !**

Solve the equation and check soultion 2(13t-15)+3(t-19)=0
*Monday, June 9, 2014 at 8:27am*

**math foundations 20**

How do I solve normal distribution word problems? Ex A manufacturer offers a warranty on it's coffee makers. The coffee makers have mean lifespan of 4.5 years, with standard deviation of 0.7 yeaes. For how long should the coffee makers be covered by the warranty, if the ...
*Monday, June 9, 2014 at 1:26am*

**math**

12 different flavors of ice cream and 2 different toppings. How many different kinds of sundaes could be made if each sundae contained 2 scoops of ice cream and one topping?
*Monday, June 9, 2014 at 1:05am*

**Math**

I'm an on-going 8th grader, and I'm taking a class for Algebra 2. What should I expect that is different from Algebra 1? P.S. I've taken Geometry online.
*Sunday, June 8, 2014 at 11:13pm*

**Math**

Find two quadratic functions whose graph have the given x-intercepts. Find one function whose graph opens upward and another whose graph open downdward. (-5/2,0),(-2,0)
*Sunday, June 8, 2014 at 10:58pm*

**Math 11**

From a window in a building 20 m above ground the angle of depression of the top of a statue across the street is 30 degrees, and the angle of depression of the base of the statue is 34. How tall is the statue?
*Sunday, June 8, 2014 at 10:30pm*

**Math 11**

From a weather balloon high in the air, the angle of depression of a ground marker is 27.8 degrees. If the balloon rises 345 m straight up the angle of depression from this higher point is 46.2 degrees. How high above the ground is the balloon?
*Sunday, June 8, 2014 at 10:29pm*

**Math helpppp!**

Write the quadratic function in standard form and sketech its graph. Identify the vertex. h(x)=(x-6)^2+3
*Sunday, June 8, 2014 at 9:55pm*

**math**

A cylinder is 12cm tall and has a diameter of 3 cm. What is the surface area?
*Sunday, June 8, 2014 at 9:49pm*

**math**

A polyhedron has 6 faces and 4 vertices. Use Euler's formula to calculate the number of edges.
*Sunday, June 8, 2014 at 9:36pm*

**math help plz2!!!!**

Find an equation of parabola that has the indicated vertex and whose graph passes through the given point. Vertex (-3,5) Point (-6,1)
*Sunday, June 8, 2014 at 9:14pm*

**math**

The daily production costs P (in dollars) for a manufacturer of sound systems is given by the quadratic function. P(x)= -0.003x^2+150x-375,000 Where x is the number of units produced. What production level will yield a maximum profit?
*Sunday, June 8, 2014 at 8:16pm*

**Math**

Marc works in a dairy processing plant. He is paid 16.50/h. He is paid time-and-a-half if he works more than 40 hours in a week. Marc worked 54 hours this week. What is his gross pay? 1.5 x 16.50 = 24.75 24.75 x 40 = 990 Answer (what I got): 24.75 + 990 = $1014.75 The answer ...
*Sunday, June 8, 2014 at 7:54pm*

**Math**

Find the number of units that produces a maximum revenue. The revenue R is measured in dollars and x is the number of units produced. R = 80x – 0.0001x^2
*Sunday, June 8, 2014 at 7:50pm*

**MATH**

The perimeter of a rectangle is 540ft. Let x represent the width of the rectangle. Write a quadratic function for the area of rectangle in terms of its width. Find the vertex of the graph of the quadratic function and interpret its meaning in the context of the problem.
*Sunday, June 8, 2014 at 7:32pm*

**MATH**

Find two quadratic functions whose graph have given x-intercepts. Find one function whose graph opens upward and another whose graph opens downward. (-4,0) (0,0)
*Sunday, June 8, 2014 at 7:24pm*

**Business Math**

What will be the total deduction for social security and Medicare taxes on Juanita's next biweekly paycheck of $2,000 if she has already earned $6,000 this year? Social security tax is 6.2% of wages up to $106,800. Medicare tax is 1.45% of all wages.
*Sunday, June 8, 2014 at 7:14pm*

**math**

At Dora's donut shop, dora makes 15 different varieties of donuts. Seven of these varieties are filled with jelly or cream. Officer sweetooth was sent to dora's shop to choose a dozen donuts, all different, with six filled and six unfilled. How many different ...
*Sunday, June 8, 2014 at 6:16pm*

**Math Personal Finance**

A friend tells you that her savings account doubled in 9 years. Use the Rule of 72 to estimate what the APR of her account was.
*Sunday, June 8, 2014 at 5:49pm*

**Math statistics**

How large a sample should be taken if the population mean is to be estimated with 95% confidence to within $69? The population has a standard deviation of $892. (Round you answer up to the nearest whole number.) You may need to use the appropriate table in Appendix B to answer...
*Sunday, June 8, 2014 at 5:39pm*

**Math **

The average weight of 3 boys is 53 pounds. Not one of these boys weighs less than 51 pounds. What is the maximum possible weight in pounds, of any one boy?
*Sunday, June 8, 2014 at 5:13pm*

**math**

Assume that Mary Boyle had a homeowner’s insurance policy with $ 150,000 of coverage on the dwelling. Would a 90 percent co- insurance clause be better than an 80 percent clause in such a policy?
*Sunday, June 8, 2014 at 4:41pm*

**Math Personal Finance**

A friend tells you that her savings account doubled in years. Use the Rule of 72 to estimate what the APR of her account was. APR=____%
*Sunday, June 8, 2014 at 4:16pm*

**Math Personal Finance**

What is the present value of an investment that will be worth $2000 at the end of five years? Assume an APR of 6% compounded monthly. Present Value= $____
*Sunday, June 8, 2014 at 4:16pm*

**Math Personal Finance**

What is the present value of an investment that will be worth $2000 at the end of five years? Assume an APR (Annual Percentage Rate) of 6% compounded monthly. The present value is $_____ .
*Sunday, June 8, 2014 at 4:15pm*

**Math Personal Finance**

Assume an 18-month CD purchased for $7000 pays an APR of 5% compounded monthly. What is the APY? APY=____%
*Sunday, June 8, 2014 at 4:14pm*

**Math Personal Finance**

Assume an investment of $100 earns an APR (Annual Percentage Rate) of 5% compounded annually. The balance after 190 years will be $______.
*Sunday, June 8, 2014 at 4:13pm*

**Math Personal Finance**

Assume an investment of $7000 earns an APR (Annual Percentage Rate) of 6% compounded monthly for 18 months. The money in your account after 18 months will be $______.
*Sunday, June 8, 2014 at 4:13pm*

**Math Personal Finance**

Assume we invest $2000 for one year in a savings account that pays an APR (Annual Percentage Rate) of 10% compounded quarterly. The compound interest formula is: Balance after t periods = Principal × (1 + r)t The final balance using the compound interest formula is $...
*Sunday, June 8, 2014 at 4:12pm*

**Math Personal Finance**

Assume we invest $2000 for one year in a savings account that pays an APR (Annual Percentage Rate) of 10% compounded quarterly. Calculate the interest and compound it by hand each quarter rather than using the compound interest formula. The total interest the account has ...
*Sunday, June 8, 2014 at 4:12pm*

**Math Personal Finance**

Assume a 30-month CD purchased for $4000 pays simple interest at an annual rate of 5.5%. How much total interest does it earn? What is the balance at maturity?
*Sunday, June 8, 2014 at 4:10pm*

**math**

David Salter has a personal automobile policy ( PAP) with coverage of $ 25,000/$ 50,000 for bodily injury liability, $ 25,000 for property damage liability, $ 5,000 for medical payments, and a $ 500 deductible for collision insurance. How much will his insurance cover in each ...
*Sunday, June 8, 2014 at 3:51pm*

**Math Personal Finance**

Assume a 30-month CD purchased for pays simple interest at an annual rate of 5.5%. How much total interest does it earn? What is the balance at maturity?
*Sunday, June 8, 2014 at 3:42pm*

**Math**

If 7x + 4y = 18 and 3x + y = -3, what is the value of x + y? F. 9 G. 11 H. 12 J. 14 K. 15
*Sunday, June 8, 2014 at 3:39pm*

**Math **

A pizza parlor has 3 diffrebt crusts and 3 diffrent cheeses and 7 diffrent toppings . How many combinations are on a pizza with 3 topings 1 crust and 1 cheese ? Help please I got 42 and then was told I was wrong
*Sunday, June 8, 2014 at 3:32pm*

**Math**

4x^3-6.68E-7x^2+1.67E-8x-1.04E-10 = 0
*Sunday, June 8, 2014 at 3:11pm*

**Math**

If you multiply a number by 3 and then add 40, the result is the same as if you first add 17 and then multiply by 2. What is the result if you subtract 9 from the number and then multiply by 4? A. -60 B. -72 C. -84 D. -108 E. -124
*Sunday, June 8, 2014 at 2:48pm*

**math**

the no. of real roots of eqn (x-1)POWER 2 + (X-2) POWER 2 +(X-3) POWER 2= 0 IS:
*Sunday, June 8, 2014 at 2:25pm*

**math**

if sum of two numbers is c and their quotient is p/q then find number.
*Sunday, June 8, 2014 at 2:21pm*

**Math**

The batteries from a certain manufacturer have a mean lifetime of 890 hours, with a standard deviation of 90 hours. Assuming that the lifetimes are normally distributed, complete the following statements.
*Sunday, June 8, 2014 at 1:50pm*

**Math**

0.145258-0.145258x = x
*Sunday, June 8, 2014 at 11:05am*

**Math, statistics**

A trucking firm delivers appliances for a large retail operation. The packages (or crates) have a mean weight of 306 lb. and a variance of 2209. (Give your answers correct to four decimal places.) (a) If a truck can carry 4070 lb. and 25 appliances need to be picked up, what ...
*Sunday, June 8, 2014 at 9:08am*

**math**

The least number of pens required to make complete sets of 20, 24, 30, are?
*Sunday, June 8, 2014 at 5:48am*

**math**

If x=a^2/3-a^-2/3 then find x^3 3x=?
*Sunday, June 8, 2014 at 3:35am*

**math**

Max is 5 years younger than Michael . 4 years ago the sum of their ages was 25. How old are they ?
*Sunday, June 8, 2014 at 12:44am*

**Math**

You have a wireless phone plan that costs $25 per month. You must also pay $.10 per minute for each minute over 500 min. you phone bill was more than $30 last month. Write an inequality to represent the number of minutes m you spent on the phone last month. Suppose you use 525...
*Sunday, June 8, 2014 at 12:30am*

**math**

QuickBooks records revenue when an invoice is generated, even though cash has not been received." Is this practice acceptable? Why or why not?
*Saturday, June 7, 2014 at 10:39pm*

**Math**

Hello. I need help with this question. A coin is tossed and a number cube is rolled. What is P(heads, a number less than 5 A 1/3 B 5/12 C 2/3 D 5/6 Based on the Info given, i can not figure out the answer to this question.
*Saturday, June 7, 2014 at 8:31pm*

**math**

If money can earn 5.25% compounded monthly, what is the value of an annuity consisting of annual payments of $2500 continuing for 16 years? The first payment will be received today.
*Saturday, June 7, 2014 at 6:46pm*

**math**

Jake has $2.80 in dimes and quarters. he has 7 more dimes than quarters. how many quarters does he have?
*Saturday, June 7, 2014 at 5:56pm*

**Math**

The sum of two numbers is 83. The difference is 11. Find the two numbers.
*Saturday, June 7, 2014 at 5:48pm*

**math**

A piece of stick is 65cm long. How much less than a metre is its length? I know that 100 cm = 1 m So I minus 65 cm from 100 that equals to 35
*Saturday, June 7, 2014 at 5:15pm*

**Math**

Using the term structure in Problem 29 what is the present value of an investment that pays $100 at the end of each of years 1., 2. and 3? If you wanted to value this investment correctly using the annuity formula which discount rate should you use?
*Saturday, June 7, 2014 at 3:20pm*

**math**

the sum of 11terms of A.P is 891.find the 28th and 45th terms if the common difference is 45
*Saturday, June 7, 2014 at 2:30pm*

**MATH**

1. The table shows the results of spinning a four-colored spinner 50 times. Find the experimental probability and express it as a decimal. P(not red) = ? red | blue | green | yellow ---------------------------------------- 20 | 10 | 9 | 11 (1 point) a 0.6 b 0.4 c 0.2 &...
*Saturday, June 7, 2014 at 12:58am*

**math**

For the next eight problems, use the following scenario to find the probabilities: Jane has 4 quarters, 5 dimes, 6 nickels, and 2 pennies in her change purse. Two coins are drawn at random and the first coin IS NOT REPLACED.
*Saturday, June 7, 2014 at 12:40am*

**math Study guide updated answers check**

1. The table shows the results of spinning a four-colored spinner 50 times. Find the experimental probability and express it as a decimal. P(not red) = ? red | blue | green | yellow ---------------------------------------- 20 | 10 | 9 | 11 (1 point) a 0.6 b 0.4 c 0.2 &...
*Friday, June 6, 2014 at 11:24pm*

**Math**

A club has three different committees each of which needs a chairperson. How many ways can the chair people be selected if only 10 people are eligible for these positions, and no one can chair more than two of the committees
*Friday, June 6, 2014 at 10:06pm*

**Math**

Each digit of a four-digit PIN can be any number from 0 to 9. What is the percentage of PINs with no digit repeated more than twice?
*Friday, June 6, 2014 at 10:04pm*

**math help **

1. A bag contains red, blue, green, and yellow marbles. Seth takes a marble from the bag without looking, records the color of the marble, and then puts the marble back in the bag. He repeats the process until he has recorded the colors of 35 marbles. The chart below shows the...
*Friday, June 6, 2014 at 9:39pm*

**check my work MATH**

1. The table shows the results of spinning a four-colored spinner 50 times. Find the experimental probability and express it as a decimal. P(not red) = ? red | blue | green | yellow ---------------------------------------- 20 | 10 | 9 | 11 (1 point) a 0.6 b 0.4 c 0.2 &...
*Friday, June 6, 2014 at 9:34pm*

**math**

Which of the following is a true statement? A. All squares are rectangles. B. All rectangles are squares. C. All rhombuses are squares
*Friday, June 6, 2014 at 9:10pm*

**math Study guide 3**

1. The table shows the results of spinning a four-colored spinner 50 times. Find the experimental probability and express it as a decimal. P(not red) = ? red | blue | green | yellow ----------------------------------------- 20 | 10 | 9 | 11 (1 point) a 0.6 b 0.4 c 0.2 &...
*Friday, June 6, 2014 at 8:55pm*

**math**

If a+ib = (root of 1+i) / (root of 1-i )then prove a^2 +b^2 =1
*Friday, June 6, 2014 at 8:44pm*

**math study guide**

1. The table shows the results of spinning a four-colored spinner 50 times. Find the experimental probability and express it as a decimal. P(not red) = ? (1 point) a 0.6 b 0.4 c 0.2 d 0.3 2. You roll a number cube 20 times. The number 4 is rolled 8 times. What is the ...
*Friday, June 6, 2014 at 8:24pm*

**Math**

There are 5 yellow, 4 violet, 2 purple, 4 navy, and 4 orange marbles in a hat. You pick 2 marbles from the hat. Marbles are not returned after they have been drawn. Find the probability. Assume that the spinner is separated into equal sections. P(the first marble is purple ...
*Friday, June 6, 2014 at 8:05pm*

**Math**

You roll a number cube numbered from 1 to 6. You then spin a spinner with 6 sections each with a different color. The spinner has the colors white, green, red, pink, blue, and navy. Find the probability. Assume that the spinner is separated into equal sections. P(not 5 and green)
*Friday, June 6, 2014 at 8:04pm*

**Math**

How many 3-letter combinations are possible from the first seven letters of the alphabet?
*Friday, June 6, 2014 at 8:03pm*

**Math**

Since the slopes are the same in the below problem what does that mean? x= 4y - 1 x + 1 + 4y y= 1/4x + 1/4
*Friday, June 6, 2014 at 8:02pm*

**Math**

Mike and Dave play a game in which each independently throws a dart at a target. Mike hits the target with probability 0.6, while Dave hits the target with probability 0.3. Mike wins the game if he hits the target and Dave misses. Dave wins the game if he hits the target and ...
*Friday, June 6, 2014 at 7:30pm*

**Math**

A drawer contains 64 balls. Each ball is one of 8 colors, and there are 8 balls of each color. If the balls in the drawer are thoroughly mixed and you randomly choose two of them, what is the possibility that these two balls will have the same color?
*Friday, June 6, 2014 at 7:30pm*

**Math**

Ansgar is writing a novel. He writes seven days a week. On each of those days he write for at least 4 hours but never more than 8 hours. Last week, he wrote for exactly 46 hours. What is the maximum number of days on which he could have written for 8 hours? A. 2 days B. 3 days...
*Friday, June 6, 2014 at 7:24pm*

**math question**

how do i do a problem like this becuase i got it wrong on my study guide and i want to know how to do it? A number cube is rolled 450 times.The number 3 comes up 67 times. a.What is the theoretical probability of rolling a 3? write your answer as a fraction in simplest form. b...
*Friday, June 6, 2014 at 7:22pm*

**math Study guide**

1. The table shows the results of spinning a four-colored spinner 50 times. Find the experimental probability and express it as a decimal. P(not red) = ? (1 point) a 0.6 b 0.4 c 0.2 d 0.3 2. You roll a number cube 20 times. The number 4 is rolled 8 times. What is the ...
*Friday, June 6, 2014 at 7:19pm*

**math question please**

how do i solve this? I am asking because i have never done a problem like this or that i can remeber of, You are making your own pizza.You have 3 types of sauces,3 types of cheese,and 2 different toppings,If you choose only one of each type of ingredient,how many different ...
*Friday, June 6, 2014 at 5:47pm*

**Math**

If you had four bananas and one apple how many pieces of fruit you will have
*Friday, June 6, 2014 at 5:17pm*

**Math**

I need to write the standard equation for the circle that passes through the points: (-5,0) (0,4) (2,4) I have to use the general equation for a circle: x^2+y^2+dx+ey+f=0
*Friday, June 6, 2014 at 5:07pm*

**math**

For what real values of x and y are the numbers -3+i^2y and x^2+y+4i are conjugate complex
*Friday, June 6, 2014 at 3:53pm*

**Math**

1. What is the 117th odd natural number? 2. What is the greatest three-digit number divisible by 3, 4, 5, and 6? 3. How many even numbers are between 101 and 303? 4 How many even numbers are between 201 and 299? if 52 cards are dealt to 8 people as evenly as possible, how many...
*Friday, June 6, 2014 at 2:14pm*

**math**

2and3/4plus 1and1/4 equals
*Friday, June 6, 2014 at 2:01pm*

**math-roskdale**

Create standardized scores for all scale variables (price through alcohol). Which beverages have positive standardized scores on every variable? What does this mean?
*Friday, June 6, 2014 at 1:20pm*

**math**

Assume a cube with all sides equal to x. Let the change in x with respect to t; x(t) = 2t + 1. What is the formula for the rate of change of the volume of the cube?
*Friday, June 6, 2014 at 12:59pm*

**math**

the function b(x)=2 x-5 determines how many bags of dog food needs to be purchased for an animal shelter, where x is the number of dogs at the shelter. the shelter manager uses m(b(x)) to find the amount of money to bring for the dog food purchase. the function m(x)=3x+1. ...
*Friday, June 6, 2014 at 12:56pm*

**Math**

MULTIPLY. WRITE EACH PRODUCT IN SCIENTIFIC NOTATION. 24.) (3 * 10^6)(2 * 10^12) 26.) (6 * 10^9) (5 * 10^4) Can you please show your work so I can get a better understanding of these problems?
*Friday, June 6, 2014 at 12:38pm*

**Math**

Write each expression using a single exponent. 20.) 8^10*8^9 22.) 2.6^12 * 2.6^12 Can you please show your work so I can get a better understanding of these problems?
*Friday, June 6, 2014 at 12:20pm*

**Math**

The table shows the results of spinning a four-colored spinner 50 times. Find the experimental probability and express it as a decimal RED 20 BLUE 10 GREEN 9 YELLOW 11
*Friday, June 6, 2014 at 12:18pm*

**Math**

How do u write 6 june 2014 in 5 letters without using numbers
*Friday, June 6, 2014 at 11:22am*

**Math**

Use properties of numbers to simplify this polynomial. 4 - 3x^2+2x-x^2+3 Can you help me find this answer? Step By Step?
*Friday, June 6, 2014 at 10:22am*

**math question**

How do i solve a problem like this? I took a study guide and i messed up on some problems so can i get some help on a few that i missed so i can know how to complete them??
*Friday, June 6, 2014 at 10:14am*

**Math**

Use properties of numbers to simplify each polynomial. 5x^2+6-4x+9x^2+17x And 4 - 3x^2+2x-x^2+3 Can you help me find these answers? Step By Step?
*Friday, June 6, 2014 at 9:08am*

**Math**

A 25-foot ladder stands against a vertical wall at an angle of n degrees with the ground. If sin n = 4 / 5, how far is the base of the ladder from the wall? A. 12 B. 13 C. 14 D. 15 E. 16
*Friday, June 6, 2014 at 8:09am*

**math**

Could you explain to me why 9/64 is the answer to the following questions:A fair spinner is spun three times. The spinner is labeled A,B,C,D. What is the probability of getting a c exactly twice?
*Friday, June 6, 2014 at 4:04am*

**math **

a ladder 17 feet long is leaned up against a house, reaching a height of 15 feet. how far from the house is the base of the ladder?
*Thursday, June 5, 2014 at 9:12pm*

**math**

which of the following is equivalent to 36Cm long by 60 cm a 9:10 b 60 to 30 c 3/5 d 30:18
*Thursday, June 5, 2014 at 9:01pm*

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