Thursday
January 19, 2017

Homework Help: Math

Branches of Math

Recent Math Questions

College Math
Suzan sees a bag of marbles, she grabs a handful at random. She has seen a bag containing three red marbles, three green ones, four white ones, and three purple ones. She grabs seven of them. Find the probability of the following event, expressing it as a fraction in lowest ...
Sunday, November 20, 2016 by Ana

math
three forth times negative three forth
Sunday, November 20, 2016 by carina

Math
John wants to make brownies. To make brownies he needs 2/5 of a cup of flour per batch of brownies.if John has 2 cups of flour, then how many batches of brownies can John make?
Sunday, November 20, 2016 by Paul

f math
please what is the answer to this f math question......1-cos^2X=0 for 0°less dan equals X..then X less dan equals 270
Sunday, November 20, 2016 by mercy

math
What is the connection between the solutions of the equation ax^2 + bx + c = 0 and the x intercepts of the graph of f(x) = ax^2 + bx + c? The solution says: The solutions of the equation are the first coordinates of the x intercepts. I did the solutions to the formula but do ...
Sunday, November 20, 2016 by Carly

Math
In a math class 70 students received an A on the third test, which is 175% of the students who received an A on the second test. How many students received an A on the second test
Sunday, November 20, 2016 by Jessica

Math
A person deposited 100000 in a bank for three years. The Bank paid interest at 8% per annum compounded half yearly during the first year and at 12% per annum compounded quarterly during last 2 years.What is his balance after 3 years
Sunday, November 20, 2016 by Shahzaib

Math
Rs.200 is invested at the end of each month in an account paying interest 6% compounded monthly. What is future value of annuity after 10th payment
Sunday, November 20, 2016 by Shahzaib

education
Treena is a personable student in Mr. Jordan’s math class. Mr. Jordan can see that Treena is popular with her peers. He regularly sees her conversing animatedly with her friends in the cafeteria and before and after school. She does well in class also. Her ...
Sunday, November 20, 2016 by nay

Math help fast
What number or numbers can subtract two times a number from half of its square and gives a result of 16
Sunday, November 20, 2016 by Dal

Math
I need help with proofs in geometry.
Sunday, November 20, 2016 by Nicole

math-8
suppose hector dilates the rectangle shown below with the center of dilation at 0,0 and a scale factor of 2 and then translates the figure 1 unit to the left. what will be the coordinates the vertices of the similar figure that results, One point on figure is -3,2
Sunday, November 20, 2016 by lisa

math
A girl swims across a river. When she swims in still water, she swims at 1.25 m/s, the river flows parallel to its banks at v m/s. The girl aims to swim upstream at angle θ degrees parallel to the river bank so that her resultant velocity of 1 m/s is along AB, ...
Sunday, November 20, 2016 by Andrew

Math
Ragili made 6 liters of lemonade by mixing 1.5 liters od lemon juice and rest water.how much lemon juice will be needed to make 16 liters of lemonade ?
Sunday, November 20, 2016 by Venu

Math
Ade is four times as old as his sister Sola.If the sum of their ages is 20.Find the difference of their ages.
Sunday, November 20, 2016 by Faith

math
Water is being pumped at a rate of 100L/H. How long will it take to pump 550L
Sunday, November 20, 2016 by sam

math
A researcher collated data on Americans’ leisure time activities. She found the mean number of hours spent watching television each weekday to be 2.7 hours with a standard deviation of 0.2 hours. Jonathan believes that his football team buddies watch less ...
Sunday, November 20, 2016 by faa

Math
A pool has a uniform circular cross section of radius 5 metre and uniform Dept 1.4 metre it is filled by a pipe which delivers water @ 20 litre per second calculate in minutes the time taken to fill the pool. If the pool is emptied in 42 min by another cylindrical pipe through...
Sunday, November 20, 2016 by Ppp

Math
Solving system of equations by substitution. 52. {5x-2/4+1/2=3y+2/2;7y+3/3=x/2+7/3
Sunday, November 20, 2016 by Carly

math
The side of a square is x+8 metre and other side of the square is 3x-18 find the value of x .
Sunday, November 20, 2016 by sangya

Math
The mean score of the students who took a mathematics test was 6. Exactly 60% of the students passed the test. The mean score of the students who passed the test was 8. What was the mean score of the students who failed the test?
Sunday, November 20, 2016 by Saleha

Math
The adjacent sides of a parallelogram are 45 cm and 28 cm. Find the sum of the squares of its diagonals.
Saturday, November 19, 2016 by Pushkar

math
When 5 is added to both the numerator and denominator of a fraction the result becomes 1/2.When 1 is subtracted from both the numerator and denominator the fraction becomes 1/5.Find the fraction. plzz do whole method, i cant understand it.
Saturday, November 19, 2016 by hamza

Math Quadratic Functions
Quadratic equation always do what to their inputs? How can I answer this question..?
Saturday, November 19, 2016 by A

Math! Help asap
-2x^2+10x+3=0 What is the factored version of this??
Saturday, November 19, 2016 by Dal

math
5/x-2 - 4/x-3 express as a single fraction in its simplest form. I had done the question like this: = 5/x-2 (x-2)(x-3) -4/x-3 (x-2)(x-3) = 5x-15-4x+8 = x-7 but how in fraction?
Saturday, November 19, 2016 by humza

Math
2-6
Saturday, November 19, 2016 by Dal

Math (Calculus) (mean value theorem emergency)
Consider the graph of the function f(x)=x^2-x-12 a) Find the equation of the secant line joining the points (-2,-6) and (4,0). I got the equation of the secant line to be y=x-4 b) Use the Mean Value Theorem to determine a point c in the interval (-2,4) such that the tangent ...
Saturday, November 19, 2016 by Ray

Math
A candy manufacturer makes two types of special candy, say A and B. Candy A consists of equal parts of dark chocolate and caramel and Candy B consists of two parts of dark chocolate and one part of walnut. The company has in stock 430 kilograms of caramel, 360 kilograms of ...
Saturday, November 19, 2016 by She

math
How do you write the ratio of an original perimeter to the new perimeter? How do you write the ratio of an original area to the new area? Are the ratios the same?
Saturday, November 19, 2016 by t

math
Toffees are bought at 4 for a rupee and the same number at 6 for a rupee. Then, they are mixed and sold at 5 per rupee. What is the net profit or loss?
Saturday, November 19, 2016 by Anonymous

Math
A sporting goods company can ship 6 footballs in each carton. How many cartons are needed to ship 75 footballs?
Saturday, November 19, 2016 by Eldry

Math help pls. !!
Solve for X: (2x-3)(5x+2)=0
Saturday, November 19, 2016 by Dal

Math
Numbers subtract two times a number from half of its Square give a result of 16
Saturday, November 19, 2016 by Dal

math
a children play area is 90 m long and 44 m wide a fence will enclose it how much fencing will it need
Saturday, November 19, 2016 by aliyah

math
A) How many of the three digit numbers can be made from all of the digits, 1,3 and 7, and used only one each,are prime? B) What about 2,3 and 4? Once I get to know what the answer to the first one is, I'll figure out the second one myself.And then if I tell you what I got ...
Saturday, November 19, 2016 by Kajol

math algebra
if f(x) = x+1/x^2-9 and g(x) =x/x-3, find a) domain of f(x) b) domain of g (x) c) (f+g) (x) d) the domain of (f+g) (x)
Saturday, November 19, 2016 by laura

Math
Find the volume of the cylinder. Use 3.14 for Pi Diameter is 34m Height 27m
Saturday, November 19, 2016 by Embershy

math algebra
Angelo Buninin operates a gondola in Venice, Italy. When angelo rows his gandola in the grand canal, he can travel 2.8 miles when rowing with current in the same amount of time as he can travel 2 miles when rowing against the current. Find the speed of the current.
Saturday, November 19, 2016 by fetty

Math
I need to know the steps on how to solve the surface area of a cone. That has a radius of 4 and a height of 7.
Saturday, November 19, 2016 by Embershy

math algebra
Gray Glaze requires 15 hours to put a new roof on a house. His apprentice, Anna Gandy, can record the house by herself in 20 hours. After working alone on a roof for 6 hours, Gary leaves for another job. Anna takes over and completes the job. How long does it take Anna to ...
Saturday, November 19, 2016 by jacky

Math
what is 6 1/7 - 1 5/21
Saturday, November 19, 2016 by Lisa

math algebra
if f(x) = x+1/x^2-9 and g(x) = x/x-3, find a) the domain of f(x) b) the domain of g(x) c) (f+g) (x) d) the domain of (f+g) (x)
Saturday, November 19, 2016 by rita

math - business
A manufacturer has determined that if it sets the price of paper at x dollars per ream, then its monthly profit can be represented by the equation P = (6000 - 400x)(x - 2). Determine the y-intercept - I multiplied it out and found that the y-intercept was (0, -12,000) Then it ...
Saturday, November 19, 2016 by Carly

math
In a lottery game, a player picks 9 numbers from 1 to 43. How many different choices does the player have if order doesn't matter?
Saturday, November 19, 2016 by kristin

Math
A recipe for 2 1/2 dozen cookies calls for 1 7/8 cups of flour. How many cups of flour are needed to make 1 1/3 dozen cookies?
Saturday, November 19, 2016 by Crystal

math - business
My profit formula is P = -.005x^2 + 4x - 200. The question wants me to find the number of donuts sold (what they are talking about in the problem) that will generate the highest profit. How do I determine that? Thank you.
Saturday, November 19, 2016 by Carly

math
The sum of the digits of a two-digit number is equal to 15. If these digits switch places then you will get a number that is 27 less then the original number. Find these numbers.
Saturday, November 19, 2016 by bla bla bla

math
The function D(h) = 5e - 0.4h can be used to find the number of milligrams D of a certain drug that is in a patient’s bloodstream h hours after the drug has been administered. a) How many milligrams will be present after 1 hour? B) after 6 hours? (Round your ...
Saturday, November 19, 2016 by jac

math
78, 69, 45, 89, 74, 37, 99, 77, 100, 82. What is the interquartile range of these scores?
Saturday, November 19, 2016 by mary

math
Monica deposits ​$400 into a savings account that has a simple interest rate of 4.1​%
Saturday, November 19, 2016 by vallery

Math
Why Quadratic equations are shaped like U ?
Saturday, November 19, 2016 by Emma

math
Write largest and the smallest fraction among the given fraction 4/9 plese answe
Saturday, November 19, 2016 by selvam

Math
Let V and W be vector spaces and assume that T be a linear mapping from V to W. (a) Show that ker(T) is a subspace of V . (b) Show that range(T) is a subspace of W.
Saturday, November 19, 2016 by Usman

Math
Your child is learning to identify the number that is one more or one less than a given number up to 20. Ask your child if he /she can use a pencil to join the bees that are one more than each number to the flower.then ask him/her to find the bees that are one less than the ...
Saturday, November 19, 2016 by Nhhh

Math
The monthly inflation rate for the geometric mean for the past 60 months? How does the geometric mean compare to the inflation rate?
Saturday, November 19, 2016 by Leilani

math
How do you write the ratio of an original perimeter to the new perimeter? How do you write the ratio of an original area to the new area? Are the ratios the same?
Saturday, November 19, 2016 by t

Math Help
Assume that the probability of a boy being born is the same as the probability of a girl being born. Find the probability that a family with five children will have at least one boy.
Saturday, November 19, 2016 by Bobbie

Math
a) A woman is twice as old as her daughter. Five years ago the sum of their age was 62. What are their present ages. b) A bottle is half full. After adding 275 mL to the bottle it is three quarters full. How much does the bottle hold when full?
Saturday, November 19, 2016 by Anonymous

Consumer Math
On retirement Victor was offered the option of receiving monthly payment of $1674.08 or a lump-sum payment of $150667 a) What are the respective incomes per annum of each option if the lump sum can be invested at 11.5% p.a. b) At what interest rate must the lump sum be ...
Saturday, November 19, 2016 by Anonymous

math
Karen earns a weekly gross salary of $628. Tax of $148.90 is deducted. 4.5% is paid into a superannuation fund a 8% is paid directly towards mortgage. Karen aims to save 10% of her remaining income. What amount will she save each week?
Friday, November 18, 2016 by anonymous

Math
If a 13 ounce box of cereal contains 5 grams of protein, how many grams of protein are in a 62.4 ounce box?
Friday, November 18, 2016 by Shak

Math
Find the average value of the function over the given interval and all values of x in the interval for which the function equals its average value. f(x) = 4x3 − 3x2, [−1, 2]
Friday, November 18, 2016 by Emily

math
the perimeter of a square tile is 28 m. what is its area
Friday, November 18, 2016 by sophia meyer

Math
Ann, Ben, and Cindy were eating Skittles. The ratio of the numbers of candies they ate is 5:5:7. If Cindy ate 30 Skittles less than Ann and Ben together, what is the total number of Skittles the three of them ate?
Friday, November 18, 2016 by Midnight

Math
Use the limit process to find the area of the region between the graph of the function and the x-axis over the given y-interval. g(y) = 4y2 − y3, 1 ≤ y ≤ 3
Friday, November 18, 2016 by Matt

math
what is a ordered pair? can you give me some examples please
Friday, November 18, 2016 by anonymous

Math
Please help!! Suzie is five years older than paul. She is 7 years older than peter. The sum of their ages is 21. How old is each person.
Friday, November 18, 2016 by Kathrun

Math help please
Sorreh I never really post question but I need help with this Write a real world problem that you can model with the two step equation 5x+7=10. Then solve the problem. I would really like it if Some one could explain this to me!! thanks agian ~lost gurls finding home in ...
Friday, November 18, 2016 by Thili

Math help please
I kinda need help with this 10.Write a real world problem that you can model with the two step equation 5x+7=10. Then solve the problem.
Friday, November 18, 2016 by Thili

math
Shopping: Tax Situation: You are purchasing four items and want to calculate the tax. The items cost $2.50, $8.75, $3.00, and $10.25. The tax rate is 6%. How much is the tax? Calculation With Distribution (Show all steps.) Calculation Without Distribution (Show all steps.) I ...
Friday, November 18, 2016 by Elizabeth

Math shopping discounts
Situation: You want to buy three books that are on sale at 20% off. The original prices of the books are $2.50, $4.95, and $6.00. How much will you save? Calculation With Distribution
Friday, November 18, 2016 by Elizabeth

Math
A rectangle with a perimeter of 104m has a width of 8 cm less than twice the length. Find the dimensions of the rectangle. I need help (:
Friday, November 18, 2016 by Aneisha

Math
Y=2x-5 and 4x-y=7
Friday, November 18, 2016 by Kim

Math
What does Shannon has two quarters for dimes and 5 nickels Joe has to quarters and 7 pennies how much do they have in all
Friday, November 18, 2016 by Kailah

Math
When added the square root of 25 and -9 which type of number is the sum?
Friday, November 18, 2016 by Anon

math
Solve each inequality 1. m-7<6= 2. n-8>5= 3. p+5<10= 4. there are 20 students and unknown number of adults, the bus can hold at least 35 people. What is the greatest number of adults who can chaperon?
Friday, November 18, 2016 by Elizabeth

Math
In a large section of a statistics class, the points for the final exam are normally distributed, with a mean of 72 and a standard deviation of 9. Grades are to be assigned according to the following rule: The top 10% receive A's. The next 20% receive B's. The middle ...
Friday, November 18, 2016 by Alex

Math
In a large section of a statistics class, the points for the final exam are normally distributed, with a mean of 72 and a standard deviation of 9. Grades are to be assigned according to the following rule: The top 10% receive A's. The next 20% receive B's. The middle ...
Friday, November 18, 2016 by Alex

math algebra
when only the cold water valve is opened, a washtub will fill in 8 minutes. When only the hot water valve is opened, the washtub will fill in 12 mintues. When the drain of the washtub is open, it will drain completely in 7 minutes. If both the hot and cold water valves are ...
Friday, November 18, 2016 by niki

Math
If you can measure the length and width of a rectangle correct within .1cm then the calculateday area will be correct .1cm as well. Is this true or false?
Friday, November 18, 2016 by Erika

math algebra
consider the function f(x)= x-2/x^2-81. for what value of x, if any, will this function a) equal 0? b) be undefined explain.
Friday, November 18, 2016 by stef

math algebra
As of 2012, the movies with the highest worldwide box-office sales are Avatar, Titanic, and The Avengers. The total box-office sales for all three movies were $6.5 billion. The box-office sales for Avatar were $0.2 billion less than twice the box-office sales for The Avengers...
Friday, November 18, 2016 by stef

Math
1. Find the surface are of the given prism. Height- 49ft Width- 32ft Length- 41ft A. 7154ft^2 B. 2624ft^2 C. 9778ft^2 D. 8432ft^2 2. Find the Volume of the same prism. A. 64288ft^3 B. 1312ft^3 C. 2009ft^3 D. 23208ft^3 3. Find the surface area for the given cylinder. Use 3.14 ...
Friday, November 18, 2016 by Embershy

math
1/2 < -7/10 is this a true statement
Friday, November 18, 2016 by james

Math
A man buys a car at 25 gh cedis.he pays 20% of the cost of his own resources and takes a loan for the remainder at 2.5% simple interest per annum.calculate the total amount the man pays for the car if he pays the loan 8 years later.
Friday, November 18, 2016 by Derrick

Math
A game is played using one dice. If the dice is rolled and shows 1, the player wins $1; if it shows 2, the player wins $2; if it shows a 3, the player wins $3. If the die shows 4,5,or 6 the player wins nothing. a.) If there is a charge of $1.25 to play the game, what is the ...
Friday, November 18, 2016 by Ryan

math
The equation 4x^2 +9y^2 -36 = 0 represents an ellipse in standard position. Find the coordinates of the foci and the equations of the directrices. The Foci are (+-f, 0) where f>0 I have worked out f=sqrt(5) not sure how to work out the directrices (d)
Friday, November 18, 2016 by s17

math
Two ships pursue straight-line courses at steady speeds. At each time t (in hours, where 0 less-than-or-equal t less-than-or-equal 14), the positions of the two ships are given by: Ship A (10t+35, 20t+25) Ship B (11t+15, 22t+15) These coordinates are with reference to a ...
Friday, November 18, 2016 by s17

math
Find a parametrisation of the hyperbola that is obtained by translating the hyperbola with equation 9x^2 - (y^2)/16 =1 by -2 unit(s) right and 4 unit(s) up x=? y=?
Friday, November 18, 2016 by s17

Math
The cylindrical bottle sells for $54.00, the conical bottle sells for $20.00 and the spherical bottle for $35.00. What is the best buy per cubic centimeter of perfume? Show work AND explain your reasoning. Cylinder- V=1497.4589878895 cm3 Cone- V=499.15299596317 cm3 Sphere- V=...
Friday, November 18, 2016 by Embershy

Math
Show the steps to determining the volume of questions 1-3 1. A cylinder with a radius of 6.2cm and height of 12.4cm what is the volume. 2. A cone with a radius of 6.2cm and a height of 12.4cm what is the volume. 3. A sphere with a radius of 6.2cm what is the volume
Friday, November 18, 2016 by Embershy

Math
Elizabeth has 1 7/10 as many as Rosalie has in her garden. If Elizabeth has 51 plants how many plants does Rosalie have in her garden? Please explain step by step on how you answered this and also no links or anything please just a raw answer thanks in advance :).
Friday, November 18, 2016 by WafflesLord

Math
On a trip of d miles to another city, a truck driver's average speed was x miles per hour. On the return trip the average speed was y miles per hour. The average speed for the round trip was 50 miles per hour. Show that y=25x/(x-25) Find the limit of y as x approaches 25 ...
Friday, November 18, 2016 by Matt

Math
The measurement of the radius of a circle is 16 inches, with a possible error of .25 inches. Use differentials to approximate the possible propagate error in computing the area of the circle.
Friday, November 18, 2016 by Matt

math
x8+x4+1
Friday, November 18, 2016 by algebra

math
two paths each of width2.5 run across the middle of a rectangular field of15 long and 9m wide.find the area of the paths.
Friday, November 18, 2016 by algebra

math
this is not about math but i am from connexus too and the teachers only care about our grades i am a 7 th grader
Friday, November 18, 2016 by annaka

Order MATH!
Order the numbers 0.64,2/3, 65%, and 7/10, from least to greatest. Can You PLZ Tell Me How U Did This? THX!
Friday, November 18, 2016 by Agal

math
James attached a diagonal brace a rectangular frame that measures 6 feet by 8 feet. What is the length of the diagonal brace? A. 2 feet B. 10 feet C. 14 feet D. 48 feet i think it is D
Friday, November 18, 2016 by bub

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