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July 30, 2014

Homework Help: Math

Branches of Math

Recent Math Questions

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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

math
A researcher wishes to estimate the proportion of college students who cheat on exams. A poll of 400 college students showed that 33% of them had or intended to, cheat on examinations. Find the margin of error for the 95% confidence interval.
Thursday, June 5, 2014 at 8:41pm

math
A government survey conducted to estimate the mean of houses in a metropolitan area is designed to have a margin of error of 10,000. Pilot studies suggest that the population standard deviation is 70,000. Estimate the minimum sample size needed to estimate the population mean ...
Thursday, June 5, 2014 at 8:35pm

math
A sample of 64 statistics students at a small college had a mean mathematics ACT score of 28 with standard deviation of 4. Estimate the mean mathematics ACT score for all statistics students at college. Give the 95% confidence interval.
Thursday, June 5, 2014 at 8:27pm

math
Bill is doing a project for you in the marketing department. Ln conducting his analysis regarding consumer behavior and a new product that has come out, he tells you the correlation between these two variables is 1.09. What is your response to this analysis. Judy conducted an ...
Thursday, June 5, 2014 at 8:17pm

MATH
Make a table and a graph for each function. Use only positive values for x in exercise 28. 26. y=2x^2-4 28. y=7/x
Thursday, June 5, 2014 at 8:07pm

MATH
Graph Linear Function 22.) y=2x-5 Can you help me find the answer?
Thursday, June 5, 2014 at 8:01pm

MATH
Find the slope of the line that passes through each pair of points. 18. (1,2) and (-3,2) 20. (-4,9) and (10,6) Can you help me find the answers?
Thursday, June 5, 2014 at 7:59pm

math
below are the results of tossing a number cube 8 times find the experimental probability of tossing an even number. 3,4,1,2,5,1,6,5 1. 1/4 2. 3/8 3. 1/2 4. 5/8
Thursday, June 5, 2014 at 7:52pm

math
write the number of permutations in factorial form.then simplify. how many different ways can you and four of your friends sit in the backseat of a limousine? A)4!;24 B)4!;120 C)5!;120 D)5!;720
Thursday, June 5, 2014 at 7:49pm

math
you want to pick a four-player tennis team there are eight players to choose from.how many different teams can you form? A)70 B)1,680 C)48 D)336 *plz jus help me or show me how to do it*
Thursday, June 5, 2014 at 7:45pm

math
eric has a pair of identical number cubes.the face of each of each cube are numbered 1-6.eric will roll the cubes both at the same time.what is the probability that the numbers showing face-up after the roll will be multiples of 3? A)2/9 B)1/3 C)1/6 D)1/9
Thursday, June 5, 2014 at 7:39pm

4th grade math
For a survey, 20 students in one class were asked to name their favorite sport. the tally chart shows the result. Basket ball - 6 soccer-7 hockey - 5 volleyball - 2 suppose all 100 students in the grade were asked to name their favorite sport. how many students would you ...
Thursday, June 5, 2014 at 7:37pm

math
the probability it will snow in the next weeks is 1/12 for this week and 1/4 for next week.what is P(snow this week,then show next week? A)1/8 B)1/16 C)1/24 D)1/48
Thursday, June 5, 2014 at 7:31pm

math
Hercules Films is deciding on the price of the video release of its film Bride of the Son of Frankenstein. Marketing estimates that at a price of p dollars, it can sell q = 300,000 − 15,000p copies, but each copy costs $4 to make. What price will give the greatest profit?
Thursday, June 5, 2014 at 7:29pm

math
compute Sun Jung's estimated tax payment for the second quarter. She is self-employed and she expects to earn $61,760 this year. Her estimated income tax rate is 23%. For self-employed persons, social security tax is 12.4% of wages up to $106,800, and Medicare tax is 2.9% ...
Thursday, June 5, 2014 at 7:25pm

math
a quality supervisor for a factory that makes cell phone cases examines a sample of 46 cases are the wrong size in a shipment of 3,000? A)410 B)475 C)506 D)522
Thursday, June 5, 2014 at 7:20pm

math
While shopping, you purchase 4 pairs of jeans, 6 shirts, and 3 pairs of shoes. How many different outfits will you be able to make using one pair of jeans, one shirt, and one pair of shoes? 13 22 60 72
Thursday, June 5, 2014 at 7:14pm

help needed with math
instead of buying packages of 20 batteries for $7.00 to power his video game controllers, Nathaniel decides to buy 4 rechargeable batteries and a charger for $15.39. How many times does he need to use the rechargeable batteries to make them a better value?
Thursday, June 5, 2014 at 6:42pm

math
Can someone solve this for me ? Two cards are chosen from a standard deck of 52 playing cards without replacement. What is the probability that the first card is an ace and the second is a king?
Thursday, June 5, 2014 at 4:35pm

MATH
Use the function rule f(x)=4x-4x-7. Find each output. 14. f(3) 16. f(-5)
Thursday, June 5, 2014 at 4:18pm

math
A trapezoid has a height of 7 inches and bases of 11 inches and 4 inches. What is the area of the trapezoid? When finding the area of a trapezoid, does it matter which base is b1 and wich base is b2? explain
Thursday, June 5, 2014 at 4:04pm

math
If there are 20 to 25 apples in a basket and there are 3 to 4 baskets in a bushel, what is the minimum number of bushels that can be filled by 1000 apples?
Thursday, June 5, 2014 at 3:59pm

I may fail the 8th grade?
My home life has been crazy so I missed a lot of school and got bad grades. My anxiety is through the roof right now and i'm shaking a lot. all i need to do is get a 75% in math. and i just can't this is my biggest fear I can't see how life goes on after failing a ...
Thursday, June 5, 2014 at 3:24pm

Math
Marisol invested $48,000 in an 18 month CD with a 4.28% APY compounded monthly. What will be the value of the CD be after the 18 months?
Thursday, June 5, 2014 at 2:57pm

math Study guide
I need help. I got all of these questions out of 50 wrong. 6-10 were not given. 1. Which of the following is an example of independent events? A-rolling a number cube and flipping a coin B-drawing marbles from a bag without replacement after each draw C-choosing members of a ...
Thursday, June 5, 2014 at 2:22pm

math question check
i think its C. A bag of fruit contains 4 apples,1 plum,2 apricots,and 3 oranges.Pieces of fruit are drawn twice with replacement. What is P(apple,then apricot)? A.4/5 B.2/25 C.3/25 D.3/5
Thursday, June 5, 2014 at 2:07pm

Math
This question has two parts. Danielle's phone plan charges her $30 per month for the first 200 minutes and then $0.10 per minute for each subsequent minute. 1. Which of the following functions takes an input of any whole number value of x is greater than or equal to 200 ...
Thursday, June 5, 2014 at 1:56pm

math
The function rule C=10n +26 relates the number of people n who attend a small concert to the cost in dollars c of the concert.. Make a table of the input.output pairs to show the cost if 27, 39, and 43 people attend. Help me pleaseee!!!! :( <3
Thursday, June 5, 2014 at 1:34pm

math question
im not so sure on this but i think its A. Which of the following is an example of independent events? A.rolling two number cubes B.selecting marbles from a bag without replacement after each draw C.choosing and eating a piece of candy from a dish and then choosing another ...
Thursday, June 5, 2014 at 1:30pm

math
why is it there?
Thursday, June 5, 2014 at 12:51pm

Math
In 1986 an earthquake measuring 5.0 on the Richter scale hit northeast Ohio. This earthquake is _______ times as intense as a magnitude 2.0 quake
Thursday, June 5, 2014 at 12:47pm

math
Assume the car can be purchased for 0% down for 60 months (in lieu of rebate). A car with a sticker price of $42,650 with factory and dealer rebates of $5,100 Find the monthly payment if financed for 60 months at 0% APR. Find the monthly payment if financed at 2.5% add-on ...
Thursday, June 5, 2014 at 12:39pm

math question
/how do i solve this? The probability of winning a game is 15%. If you play 20 times,how many times should you expect to win? A.5 times B.3 times C.6 times D.15 times
Thursday, June 5, 2014 at 12:37pm

math
What would you predict the price of product x in volume of 150 to be approximately. What would you predict the price of product x in volume of 100 to be approximately.
Thursday, June 5, 2014 at 12:19pm

MATH
Write the quadratic function in standard form (if necessary) and sketch its graph. Identify the vertex h(x)=x^2-9
Thursday, June 5, 2014 at 11:38am

math
Find the number of decibels for the power of the sound given. Round to the nearest decibel. A rocket engine, 2.37 cross 10−5 watts/cm2
Thursday, June 5, 2014 at 11:33am

math
If I have 20 apples and I give away 7%, how many apples do I have left?
Thursday, June 5, 2014 at 11:31am

math
Find the number of decibels for the power of the sound given. Round to the nearest decibel. A rocket engine, 2.37 cross 10−5 ( to the 5th power) watts/cm2 ( cm squared)
Thursday, June 5, 2014 at 11:30am

Math
Jane ran around the perimeter of a rectangular park at a constant rate of 10 feet per second. The park has an area of 67,500 square feet, and its length is exactly three times its width. For how many seconds did Jane run? F. 60 G. 120 H. 240 J. 360 K. 480
Thursday, June 5, 2014 at 3:52am

MATH HELP PLEASE & THNX!
Hercules Films is deciding on the price of the video release of its film Bride of the Son of Frankenstein. Marketing estimates that at a price of p dollars, it can sell q = 300,000 − 15,000p copies, but each copy costs $4 to make. What price will give the greatest profit...
Thursday, June 5, 2014 at 2:02am

math
Suppose that inflation is 3% per year. This means that the cost of an item increases by 3% each year. Suppose a jacket cost $150 in 2011. How long will it take for the jacket to cost $300 dollars?
Wednesday, June 4, 2014 at 11:12pm

math
Except 15 all others are oranges, except 20 all others are mangoes, except 25 all others are bananas , what is the total number of fruits
Wednesday, June 4, 2014 at 10:49pm

Math
Last Problem of the Week this year! Having a bit of trouble with it: In how many ways can seven basketball players of different heights line up in a single row so that no player is standing between two people taller than she is? Does it have anything to do with 7! or am I on ...
Wednesday, June 4, 2014 at 9:41pm

math
. If the maximum loan-to-value ratio that a lender will accept on a $100,000 loan is 90 percent, then the borrower must make ________
Wednesday, June 4, 2014 at 9:31pm

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