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September 16, 2014

Homework Help: Math

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Recent Math Questions

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math
if (x-a) is a factor of x^3-a^2x+x+2 then 'a' is equal to
Tuesday, June 10, 2014 at 10:22am

Math
Determine the number of triangles that could be drawn with the given measure. Then, find the measures of the other angles and the other side in each possible triangle. Round side lengths to the nearest tenth of a unit and angle measure to the nearest tenth of a degree, where ...
Tuesday, June 10, 2014 at 10:08am

math
Calculate the cash discount and the net amount due for the following transaction. Amount of Invoice Terms of Sale Cash Discount Net Amount Due $12,660.00 2/10, n/45
Tuesday, June 10, 2014 at 12:45am

Math
How do you know what the period of this function is: y=2cos3(x+45')? Explain.
Tuesday, June 10, 2014 at 12:26am

Math
Determine the number of triangles that could be drawn with the given measure. Then, find the measures of the other angles and the other side in each possible triangle. Round side lengths to the nearest tenth of a unit and angle measure to the nearest tenth of a degree, where ...
Monday, June 9, 2014 at 11:21pm

math
m=(monday tuesday wednesday ...sunday)
Monday, June 9, 2014 at 10:39pm

math (check answer plz)
2. A jar contains blue, red, yellow, and green marbles. P(blue)=1/4. What type of probability is illustrated and why? A. Experimental; the result is based on the number of possible outcomes. B. Experimental; the result is found by repeating an experiment. C. Theoretical; the ...
Monday, June 9, 2014 at 9:54pm

math
I need help explaing percentage s to my daughter such as a bike cost $250 but it is on sale for%25 off
Monday, June 9, 2014 at 8:06pm

math
120 / 2p = 30
Monday, June 9, 2014 at 7:33pm

math
The polynomial x 3 + 5x 2 -57x -189 expresses the volume, in cubic inches, of a shipping box, and the width is (x+3) in. If the width of the box is 15 in., what are the other two dimensions? ( Hint: The height is greater than the depth.)
Monday, June 9, 2014 at 7:32pm

math
What is the period, in seconds, of a simple pendulum of length 3 meters? Use the gravitational constant g = 9.8 m/s2 and round your answer to two decimal places Please help! A step by step would with the answer would be helpful!
Monday, June 9, 2014 at 7:20pm

Math
Alex's distance form home is represented by the equation D= -0.5t +300 D represents his distance from home and t represents time in minutes How long will it take Alex to reach a distance of 182 km from home
Monday, June 9, 2014 at 6:31pm

Math
Two 6-sided dice are rolled at the same time. How many outcomes correspond to the event that the sum of the numbers is 5?
Monday, June 9, 2014 at 6:22pm

math *check*
1. You roll a number cube numbered one to six 12 times. P(5)=2/3. What type of probability is illustrated and why? A. Experimental; the result is based on the number of possible outcomes. B. Experimental; the result is found by repeating an experiment. C. Theoretical; the ...
Monday, June 9, 2014 at 5:24pm

Math
Find the maximum or minimum value of function and the value of x when it occurs: -2x^2+5x+5.
Monday, June 9, 2014 at 5:12pm

Math
Alex needs 2&1/4 cups of flour ,he has 2&3/10 cups Draw a number line that shows both fractions.
Monday, June 9, 2014 at 5:00pm

geometery
4. Quadrilateral MATH has been dissected into squares. The area of the red square is 64 square units and the area of the blue square is 81 square units. Determine the dimensions and the area of quadrilateral MATH.
Monday, June 9, 2014 at 4:09pm

Math
a standard checkerboard with 8 blocks to a side contains 204 squares of various sizes. in how many such squares are there an equal number of red blocks and black blocks?
Monday, June 9, 2014 at 2:52pm

math
A tap flows at a rate of 15 litres per minute. How long will it take to fill a 300 litre container?
Monday, June 9, 2014 at 2:04pm

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

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