Saturday
August 29, 2015

# Homework Help: Math

## Recent Math Questions

Math
Suppose you start at the point (0,0,3) and move five units along the curve x=3sint, y=4t, z=3cost in the position direction. Where are you now?
Sunday, July 5, 2015 by Tads

Math
Find equations of the osculating circles of the ellipse 9x^2+4y^2=36 at the points (2,0)&(0,3).
Sunday, July 5, 2015 by Sean

Math
Find the curvature x=t^2, y=t^3 Using k=|xÿ-yx|/(x^2+y^2)^3/2
Sunday, July 5, 2015 by Sean

math
Shreya walks 2/3 km to her school and rosy walk 3/4 km to the school who has to walk a longer distance to reach the school and by how much
Sunday, July 5, 2015 by neha

Math
If Rita can type 55 words a minute, how many minutes to the nearest minute will it take her to type a 1695-word article?
Sunday, July 5, 2015 by Saira

math
car rental is 36.00 day, 100 miles free for each day of rental plus .20 per mile for each mile over allowance and i went 450 miles total how much is total for rental car
Saturday, July 4, 2015 by julie lockhart

MATH
if alpha and beta are zeroes of the polynomial x2-5x+6,then find the polynomial whose zeroes are root 3 and -root 3
Saturday, July 4, 2015 by ANGEL

Math
A man left 6M to his children and grandchildren, 7 in all. The children received 1/3 of it which is 200,000 more a piece than what each of the grandchildren received. How many children were there?
Saturday, July 4, 2015 by Anne B.

math
My tenths digit is twice greater than my thousandths place.My hundredths digit is the sum of my tenths and thousandths digits.Who am i?
Saturday, July 4, 2015 by mica

Math -
A)For a certain commodity the demand equation is given by D=-3p+20. At the price of $1, four units of the commodity are supplied.If the supply equation is linear and the market price is$4, find the supply equation. B) how many litres of a 70% alcohol solution must be added to...
Friday, July 3, 2015 by Astro

Math
1) Last Tuesday, Galaxy Cinemas sold a total of 170 movie tickets. Tickets can be bought in one of 3 ways: a child admission costs $5, student admission cost$6 all day, and regular admissions are $8.50. Proceeds totalled$970. The number of child tickets sold was double that ...
Friday, July 3, 2015 by Nray

Math
There is no difference between the number of males or females who go to their primary care physician for an annual exam.
Friday, July 3, 2015 by Henry

Math equation
A rectangle has a width w that is a 5 units longer than its lengthL. Which equation expresses the rectangle's area, A?
Friday, July 3, 2015 by Anonymous

MATH
Is it possible for the graph of a polynomial function to have no y-intercept? No x-intercept?
Friday, July 3, 2015 by leslie

math
How is the range of a polynomial function related to the degree of the polynomial?
Friday, July 3, 2015 by leslie

math age problem
Three years ago, Jim was half as old as Tom. Three years from now, Jim will be half as old as Michael. If Jim's age now is half as old as Michael's age three years ago, How old are Jim, Tom and Michael at present?
Friday, July 3, 2015 by mar

math
solve 4^(x+2)=2^x
Thursday, July 2, 2015 by Leslie

math
If you get mixed nuts with cashews that cost $6.25 lb. and if you get mixed nuts with peanuts @$2.30 lb. But if I just want 1/2 lb. of mixed nuts for $1.70 how much of each would be included? How many lbs. of cashews and how many lbs of peanuts. Thursday, July 2, 2015 by Leslie math 5t^2-7t=1 find exact solution Thursday, July 2, 2015 by Peter math If you get mixed nuts with cashews that cost$6.25 lb. and if you get mixed nuts with peanuts @ $2.30 lb. But if I just want 1/2 lb. of mixed nuts for$1.70 how much of each would be included?
Thursday, July 2, 2015 by Leslie

Math
Tiffany is constructing a fence around a rectangular tennis court. She must use 300 feet of fencing. The fence must enclose all four sides of the court. Regulation states that the length of the fence enclosure must be at least 80 feet and the width must be at least 40 feet. ...
Thursday, July 2, 2015 by Lily

Math
The distance between two cities on a map is 4 inches. The actual distance between the two cities is 24 miles. What is the scale used on the map? If the scale on a different map of the same area is inch = 1 mile, how many inches separate the same two cities?
Thursday, July 2, 2015 by anonymous

Math
Mary is getting paid $383.00 every two weeks at her job. How much does she make hourly? How would I figure this out? Thursday, July 2, 2015 by Bob Math Hi Steve, Sorry I did not explain my self better than I did. See this is the second time taking this Statistic course,and I have no idea how to do anythings. The question is: Hi Steve, It is a graph where there is a line on point is on -3 and the other point is on +5 It says ... Thursday, July 2, 2015 by Mary Ann Finite Math Pivot the matrix about the element 4 1 3 5 5 4 2 Thursday, July 2, 2015 by Amanda Finite Math State and perform the next elementary row operations that should be performed to put the matrix in diagonal form 1 2 -3 3 2 -4 6 8 3 6 15 12 Thursday, July 2, 2015 by Krystal math A reading list contains 3 historical books and 4 science-fiction books. What is the probability that Tena will randomly choose a historical book for her first report and a science-fiction book for her second? Thursday, July 2, 2015 by nate Math I need help with these few questions on my homework please :) 1. How much money would you need to pay to receive a payout annuity of$8,503.05 annually for 10 years, assuming your money earns 7.5% compounded annually? Assume that your payments increase annually by a 3% COLA. ...
Thursday, July 2, 2015 by Macy

Math
I need help with these few questions on my homework please :) 1. How much money would you need to pay to receive a payout annuity of $8,503.05 annually for 10 years, assuming your money earns 7.5% compounded annually? Assume that your payments increase annually by a 3% COLA. ... Thursday, July 2, 2015 by Macy math can anyone help me visualize multidigit multiplication ? for example let us consider this question 245 X345 here when we multiply 4 at tens place with 5 with at ones place we do it as if it onesXones multiplication but place the product at tens place and same with 3 at ... Thursday, July 2, 2015 by Help me out !!! math what is the unit digit in (7^95 - 3^58) ? Thursday, July 2, 2015 by medlin Math The adjacent sides of parallelogram are 26cm and 28cm and one of its diagonal is 30cm. Find the area of the parallelogram by using heron's formula Thursday, July 2, 2015 by Anonymous Math If 3x+2y=12 and xy=6,find 27x^3+8y^3 Thursday, July 2, 2015 by Meera Math The adjacent sides of parallelogram are 26cm and 28cm and one of its diagonal is 30cm. Find the area of parallelogram by using heron's formula Thursday, July 2, 2015 by Meera Math good evening, I was wondering if you could direct me in right direction to lean how to evaluate a line that is there with two numbers and I have to find out how to write it. Either by factions or whole numbers. Thank you for you time. Wednesday, July 1, 2015 by Mary Ann Math An invoice for a camcorder that cost$1210 is dated August 2, with sales terms of 4/10 EOM. If the bill is paid on September 5, how much is due for the net amount due?
Wednesday, July 1, 2015 by Pam

Math
Solve the system of equations using linear combination. a+c=9 8a+4.5c=58
Wednesday, July 1, 2015 by Sara

Math
A bag contains 3 red marbles, 4 blue marbles, and 5 white marbles. What is the probability of pulling out two red marbles in a row if none are replaced? A. 1/22 B. 1/16 C. 1/24 D. 1/5
Wednesday, July 1, 2015 by Anonymous

Math
Find the value of the following" 10!7! over 12!5! If your answer is not an integer, write it as an exact fraction. Thank you
Wednesday, July 1, 2015 by Mary Ann

math in distress
I am new to this site. Can someone tell how to respond to tutors. thanks Steve and Sue for answering expeditiously
Wednesday, July 1, 2015 by toya5

math in distress
A total of 1,200 students attended Top View high school the ratio of teachers to students is 1:30. How many teachers are there in the school? I did it this way... x + 30x = 1200 31x/31 = 1200/31 1200/31 x= 38.70 = 39 __
Wednesday, July 1, 2015 by toya5

math in distress
A salesman drove 480 miles from Pittsburgh to Hartford. The next day he returned the same distance to Pittsburgh in half an hour less time than his original trip took, because he increased his average speed by 4 mph find his original speed. Okay... I did it this way...480/2= ...
Wednesday, July 1, 2015 by toya5

Math
If a^x=b^y=c^z and b^2=ac then prove that : 1/x+1/z=2/y
Wednesday, July 1, 2015 by Meera

Math
if a=√5+1/√5-1 and b=√5-1/√5+1 , find a^2+ab+b^2/a^2-ab+b^2
Wednesday, July 1, 2015 by Meera

Math
If 3x+2y=12 and xy=6,find 27x^3+8y^3
Wednesday, July 1, 2015 by Meera

math in distress
There are 5 kids, the median age is 9. Two of the kids are 5. The range of all the kids are 7. What is the age of the 2nd to the oldest? 1. 5 2. 5 3. 9 4. 5. 12 (7+5) =12 I have went around in circles with this. Please help!!!
Wednesday, July 1, 2015 by toya5

math in distress
If a textbook weighs 2 1/2 pounds and the notebook weighs 4 ounces. You bought 5 textbooks and and 5 notebooks what is the total weight in pounds? 2.5 pds 4 oz 12 1/2 *5 textbooks *5 + 20 oz ___ ____ __________ 12 1/2 20 oz I'm confused after that. Pleeeaase help!
Wednesday, July 1, 2015 by toya5

math
A quart of paint will cover 3/4 of a wall . how many quarts are required to cover four walls of the same size
Wednesday, July 1, 2015 by vanessa

math
Janice earns a 4 percent commission for the medical equipment that she sells. If she earned $1,823.94 in commission on the digital x-ray machine that she sold, what was the cost of the machine? Wednesday, July 1, 2015 by deez math 0310 Train A has a speed 20 miles per hour greater than that of train B. If train A travels 270 miles in the same times train B travels 230 miles, what are the speeds of the two trains? Tuesday, June 30, 2015 by evelyn Math 57865- +23129=48675 Tuesday, June 30, 2015 by Anonymous Math Margo and Carrie are trying to go to Idaho for Dawn's wedding. The probability of finding a flight for less than$400 is 1/7. The probability of Carrie making enough money babysitting to pay for her flight is 3/5. The probability of the girls being able to take time off ...
Tuesday, June 30, 2015 by Anonymous

math
a circular pool measures 10 ft across. 1 cubic yard of concrete is to be used to create a circular border of uniform width around the pool. if the border's depth is 2 inches, how wide would will it be?
Tuesday, June 30, 2015 by sav

Math
Bob and Mary start traveling toward each other from 480 miles apart, each moving at the same speed. They meet after four hours. How fast were they each traveling? I had 20 and then 144 I have tried this problem and everything is wrong.
Tuesday, June 30, 2015 by Kati

math
Jorge rolls two 6 sided number cubes label 1 to 6. what is the probability of Jorge rolling a 1 and a 2? my answer 36
Tuesday, June 30, 2015 by sandra

math
natilie buy a sweeter that cost 49 dollars and have a discount of 6.25%. what is the total cost of the sweeter to the nearest cent? it is correct? my answer is 42.5
Tuesday, June 30, 2015 by siulaniperez

math
if a blouse cost 98.00 dollar and have a 35% discount what is the sale price? its that correct? my answer 63.7
Tuesday, June 30, 2015 by siulaniperez

math arithmetic sequence and series
A theater has 30 seats in the first row, 33 seats in the second row, 36 seats in the third row, and so on in the same increasing pattern. If the theater has 15 rows of seats, how many seats are in the theater?
Tuesday, June 30, 2015 by elizabeth

math
Find the minimum number of cells connected in two rows in parallel required to pass a current of 6 A through an external resistance of 0.70 ohms. Take the emf of each cell as 2.1 volts and internal resistance of each cell as 0.5 ohm..
Tuesday, June 30, 2015 by Cora

Math
Serena is an account executive. She receives a base pay of $18 an hour plus a 15% bonus for all the sales she generates. Last week she generated$1,200 worth of business. What is the minimum number of hours she could have worked to make $500? Tuesday, June 30, 2015 by Jean math Sum[(-1)^(n - 1) (7/9^(n - 1)), {n, 1, Infinity}] Tuesday, June 30, 2015 by fatma math ∑ (-1)^((n-1)) . 7/9^(n-1) n=1 to ∞ Tuesday, June 30, 2015 by fatma math ∑ (-3/4)^(n-1) n=1 to n=∞ Tuesday, June 30, 2015 by fatma math Write out the first five term of the sequence determi whether the sequence converges and if so find its limit (n/(n+3) n=1 to n = ∞ Tuesday, June 30, 2015 by fatma math if 70% teenagers take a test-those who studied 95%pass-those who did not study 60% pass-what is the probability that a randomly selected teenage will pass Tuesday, June 30, 2015 by Cleopatra math Write out the first five term of the sequence determi whether the sequence converges and if so find its limit ( n^2)/(4n+1) n= 1 to n = ∞ Tuesday, June 30, 2015 by fatma math Write out the first five term of the sequence determi whether the sequence converges and if so find its limit (n/(n+3) n=1 to n = ∞ Tuesday, June 30, 2015 by fatma Math Andrea has 6 blue shirts, 2 red shirts, and 5 green shirts in her closet. What is the probability that she will randomly pick out a red shirt on Monday and a green shirt on Tuesday after putting the red shirt in the laundry? A. 7/25 B. 5/78 C. 7/156 D. 2/5 Monday, June 29, 2015 by Anonymous math f(t) = \int_0^t \frac{x^2+11 x+24}{ 1+\cos^2(x)} dx At what value of t does the local max of f(t) occur? t = ? Monday, June 29, 2015 by Anonymous Math Given ^213 x=58, find the positive value of x Monday, June 29, 2015 by Christopher math If x represents width of rectangle & length is 4 less than 3 times the width? What is the width and how would you translate this into numbers? *area =? *where length is 4 less than 3 times the width *Length = x -3 *Width = x *Area = (4x-3) (x) = 4x ^2-3x Is this the way you ... Monday, June 29, 2015 by mmv math What is the volume of a regular pyramid having a base area of 24 square inches and height of 6 in Monday, June 29, 2015 by tony Math What is the order for 2/5, 9/10, 1/3, .50, .05 from least to greatest? Monday, June 29, 2015 by Anonymous math The income of a and b are retio 3:2and their expenditure are in the ratio 5:3 if each saves rs 2000 what is their income Monday, June 29, 2015 by Anonymous math/algebra why did the kangaroo see a psychiatrist? Monday, June 29, 2015 by nick math find volume when the region bounded by the curves y = Ln(x), y = 2, and x = 1 is revolved around the line y = −2. Monday, June 29, 2015 by Anonymous math if x represents width of rectangle & length is 4 less than 3 times the width? How would I translate this in numbers? Monday, June 29, 2015 by mmv Math Eugene lives in the desert in Arizona. What is the likelihood he will need an umbrella today? A. certain B. likely C. unlikely D. impossible Sunday, June 28, 2015 by Anonymous Math Suppose that scores on the Math SAT exam follow a Normal distribution with mean 500 and standard deviation 100. Two students that have taken the exam are selected at random. What is the probability that the sum of their scores exceeds 1200? Sunday, June 28, 2015 by Loraine Math Ahmed buys two dozen eggs. As he is cooking one day he discovers that three of the two dozen eggs have double yolks! Based on this experiment, what is the experimental probability of selecting a double yolk egg from a pack of eggs? A.10% B. 12% C. 12.5% D. 25 % I think is 25% ... Sunday, June 28, 2015 by Anonymous Math It is raining outside when the temperature quickly drops below freezing and stays that way for several hours. What is the likelihood that the water on the ground will turn to ice. A. Certain B. Likely C. Unlikely D. Impossible Sunday, June 28, 2015 by Anonymous Math Alice has a basket containing 6 red socks, 4 blue socks, and 12 white socks. Find the theoretical probability that Alice will randomly select a red sock from the basket. I think I have to add the number of socks to know the total and then divide 6/22. Please is this right. Sunday, June 28, 2015 by Anonymous Math Christopher has scored at least 1 goal in 12 of his 15 soccer games this season. What is the experimental probability that he will score in the next game? Sunday, June 28, 2015 by Anonymous math Taxes: In 2010 Jackie and Bob had a joint income of$156,000. They took a total deduction of $15,000 and had a tax credit of$2500. If they filed jointly, how much tax did they owe? If tax is over: 137,300 But not over: 209,250 This amount: 26,687.50 Plus this %: 28% Of the ...
Sunday, June 28, 2015 by Comet

math
Question: The stock of Microsoft increases in value by $5 per share. If all other Dow stock prices remain unchanged, how does this affect the DJIA? A.37.80 points up B.30.24 points up C.22.68 points up D.15.12 points up Not sure how to setup this problem at all. Sunday, June 28, 2015 by JasonC Math p. 84 no.10 (from Solid Mensuration: Understanding the 3D Space book by Earnhart) Plane A which contains an isoceles right triangle forms a dihedral angle of 60 degrees with another plane B. If the hypotenuse of the triangle lies in plane B and measures 8 inches, find the ... Sunday, June 28, 2015 by Anonymous Math You have a balance of$15,000 for your tuition on your American Express credit card. If your APR is 21%, you make no further charges, and each month you make only the minimum payment of 3% of your balance, then the formula for the balance after t monthly payments is given by ...
Sunday, June 28, 2015 by Bob

Math
10. Suppose the stock of Microsoft increases in value by \$5 per share. If all other Dow stock prices remain unchanged, how does this affect the DJIA? A) 37.80 points up B) 30.24 points up C) 22.68 points up D) 15.12 points up
Sunday, June 28, 2015 by Math

Math
The rate of inflation in Ethiopia was 41% in 2008. What was the percentage decrease that year in the buying power of the birr (the currency of Ethiopia)? A. 41.0% B. 69.5% C. 29.1% D. 37.5%
Sunday, June 28, 2015 by Math

Math
Two cards. Refers to choosing two cards. If you do not put the first card back in the deck before you draw the next, what is the probability that the first card is a club and the second card is a diamond? Leave your answer as a fraction in SIMPLEST form. The probability that ...
Sunday, June 28, 2015 by Math

Math
Signals The king has 10 (different) colored flags that he uses to send coded messages to his general in the field. For example, red-blue-green might mean “attack at dawn” and blue-green-red may mean “retreat.” He sends the message by arranging three of the ...
Sunday, June 28, 2015 by Math

Math
On Halloween, a man presents a child with a bowl containing six different pieces of candy and six different pieces of gum. He tells her that she may have four of each. How many choices does she have? Answer as a whole number.
Sunday, June 28, 2015 by Math

Math
Assume a box contains three red jelly beans and two green ones. We consider the event that a red bean is drawn. Suppose I pick a jelly bean from the box without looking. I record the color but do not put the bean back in the box. Then I choose a bean again. What is the ...
Sunday, June 28, 2015 by Math

sent mary convent .sub math
I am 4-digit number divisibleby 3.My tens digit is three times as great as my thousands digit, and sum of my digit is 15 .if you reverse my digit , I am divisible by 2 as well as by6.what am I?
Sunday, June 28, 2015 by diya

math
Sunday, June 28, 2015 by simran

Math
What is the greatest number of 800000
Sunday, June 28, 2015 by Angel joyce

Math
What is the greatest number of 30000 and what is the least number of 30000
Sunday, June 28, 2015 by Angel joyce

Math
Greatest number round number 30000 least number
Sunday, June 28, 2015 by Angel joyce

math
p. 84 no.10 (from Solid Mensuration: Understanding the 3D Space book by Earnhart) Plane A which contains an isoceles right triangle forms a dihedral angle of 60 degrees with another plane B. If the hypotenuse of the triangle lies in plane B and measures 8 inches, find the ...
Sunday, June 28, 2015 by Karen

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