Sunday
August 30, 2015

Homework Help: Math

Branches of Math

Recent Math Questions

Math
the directions for lemonade say to put 2 cups of liquid concentrate into one gallon of water. if olivia only wants to make one pint of lemonade, how many fluid ounces of concentrate should she put?
Sunday, March 23, 2014 by Jess

Math
Does -7x^2+6x+3 have two real-number solutions?
Sunday, March 23, 2014 by Anonymous

math
Justin takes three times as long to do a job as Carl does, suppose t represents the time it takes Carl to do the job. Then 3t represents the time it takes Justin. How long does it take Justin if Carl takes (a) 30 sec? (b) 90 sec? (c) 2 min?
Sunday, March 23, 2014 by jeedo

Gr 10 math - finding slopes in shapes
Is the slope 3/4 the same as -3/-4? In other words, do the negatives cancel each other out and become a positive number? Thanks!
Sunday, March 23, 2014 by iza

math
Solve by substitution: x-y=3 x+3y=6 This is what I get: X+3y=6 Y=x-3 X(x-3)=6 2x= 9 2 2 X= 9/2 9/2+3y=6 9/2-9/2+3y= 6-9/2 3y/3= 3/2/3 Y= ½
Sunday, March 23, 2014 by Please help

Math
How do you solve this by substitution? x=6y+2 3x-18y=4 This is the answer I get: 3(6y+2)-18y=4 18y+6-18y=4 18y+1818y+6-18y+18y=4 36y=10 36 36 Y=5/18 3x-18(5/18) =4 3x-5+5= 4+5 3x= 9 3 3 X=3 (3, 5/18)
Sunday, March 23, 2014 by Please help

Math
Two angles are complementary. Twice one angle plus the other is 96. Find the measure of each angle.
Sunday, March 23, 2014 by Mark

Math -Quadratics Help!
I have a test tomorrow with a few sample questions that are expected to be on the test that I do not know how to properly do. 1)Find the slope intercept equation of the line passing through the intersection of the lines 2x-4y=1 & 3x+4y=4 and parallel to the line 5x+7y+3=0 2)...
Sunday, March 23, 2014 by JBregz

Math
The perimeter of a rectangle is 46 cm. One side is 9 cm longer than the other side. Find the lengths of the sides.
Sunday, March 23, 2014 by Amy

Math - Quadratics & Analytical Geometry
I have a test tomorrow with a few sample questions that are expected to be on the test that I do not know how to properly do. 1)Find the slope intercept equation of the line passing through the intersection of the lines 2x-4y=1 & 3x+4y=4 and parallel to the line 5x+7y+3=0 2)...
Sunday, March 23, 2014 by Jay

Math
two angles are complementary. Twice one angle plus the other is 96'. Find the measure of each angle.
Sunday, March 23, 2014 by Amy

math word problems
Package A weighs half as much as Package B. Package B weighs four times as much as Package C. The total weight of Package A and Package C is 648 grams. Find the weight of Package B.
Sunday, March 23, 2014 by Jiskha

probability math question
a bag contanins 7 red marbles, 2 blue marbles, and 1 green marble. What is the probabilty of choosing a marble that is not blue?
Sunday, March 23, 2014 by Anonymous

math
Anthony went to the store to buy soda. There was a sign that said, "15% off." The soda eas priced at $2.99 How much did the soda cost Anthony? If Anthony paid with a ten dollar bill, how much change did he recieve?
Sunday, March 23, 2014 by Anonymous

math
A company is selling 1 gallon blocks of orange juice. your task is to design a rectangle box ( prism) that meet all the criteria below: a) contains at least 231 cubic inches. b)the height of the box must be exactly 1/4th of the width of the box. c)the box is closed on all 6 ...
Sunday, March 23, 2014 by merfit

math
maren walks 3/5 miles in24 minutes at a steady pace. how long does it take her to walk 2 miles
Sunday, March 23, 2014 by Janell

math
Round 75.36 to the nearest unit I think the answer is 75
Sunday, March 23, 2014 by matt

Math
If 1/3 of. My salary is in one bank, 1/5 in another and 1/6 in another how much I have left
Sunday, March 23, 2014 by DD

math word problems
A black pole 3 yd 2 ft long was 2 ft longer than a white pole. When part of the black pole was cut away, it was 1 yd 1 ft shorter than the white pole. How much of the white pole was cut away?
Sunday, March 23, 2014 by Anonymous

MATH HELP!!
3c-7d=-3 2c+6d=-34
Sunday, March 23, 2014 by Nina

Math
Bella keeps a supply of red, blue, and black pens in a drawer. The drawer has 14 red pens, 18 blue pens, and 10 black pens. If Bella wants a red pen, what is the minimum number of pens she has to pull out from the drawer to make sure she gets a red pen?
Sunday, March 23, 2014 by Orko

math
x^2 sqrt(x)
Sunday, March 23, 2014 by Poulson

math
If a new home can be constructed for $160,000, what is the opportunity cost of federal defense spending, measured in terms of private housing? (Assume a defense budget of $700 billion.)
Sunday, March 23, 2014 by jon

College Math
show that the quadrilateral with vertices at the following points is a parallelogram and find its area. a = (5,2,0), b = (2,6,1), c = (2,4,7), d = (5,0,6)
Sunday, March 23, 2014 by Muja

Math
show that the quadrilateral with vertices at the following points is a parallelogram and find its area. a = (5,2,0), b = (2,6,1), c = (2,4,7), d = (5,0,6)
Sunday, March 23, 2014 by Muja

math
If f(x)=2x-1 and g(x)=x^2-x find : 1. g(g(x)) 2. g(f(x)) 3. f(g(x)) 4. f(f(x))
Sunday, March 23, 2014 by Pam

math
if f(x)=1-3x and g(x)=x^2-1, find : f(g(x))
Saturday, March 22, 2014 by Alice

math
if f(x)=1-3x and g(x)=x^2-1, find : g(g(x)), and g(f(x))
Saturday, March 22, 2014 by Alice

Math
-7x + 9y = -29 8x + 5y = -28
Saturday, March 22, 2014 by Chris

Math
solving applied problems two equations (Coles two student loans totaled $31,000. One of his loans was at 2.8% simple interest and the other at 4.5%. After one year, Cole owed $1024.40 in interest. What was the amount of each loan?)
Saturday, March 22, 2014 by Chris

Math
Thanks Steve, but can anyone else help? Start with the word dinner change one letter at a time to form new until you have the word coffee Thank soooooooo much to everybody.
Saturday, March 22, 2014 by T J

Math
Doublets? Change one word to another word one letter at a time. Create linking words. DINNER serve COFFEE. Has anybody got a clue how to do this? You have to end with the word coffee? Any help would me much appreciated. Thank You
Saturday, March 22, 2014 by T J

Math
Solve the system using elimination. y = -x + 3 y = x^2 + 1
Saturday, March 22, 2014 by Anonymous

Math (help)
Nikki made 2 gallons of punch with fruit juice and ginger ale. The recipe requires 1 gallons of ginger ale. What percent of the total recipe is fruit juice? A- 50% B- 33 1/3% C- 25% D- 10% I got 50% because u need 1/2 more but the answer is 25 please explain
Saturday, March 22, 2014 by May

Math
If salesman earned a 6% commission on sales, and in one week he earned $300 in commissions, how much merchandise did he sell that week?
Saturday, March 22, 2014 by Rayne

Math
What is 66 2/3 of 39?
Saturday, March 22, 2014 by Rayne

Math
Write an equation to model the data. x: 0,1,2,3,4 y: 0,2.8,11.2,25.2,44.8 How do you do this?
Saturday, March 22, 2014 by Anonymous

Math
Suppose that Ramos contributes $6000/year into a traditional IRA earning interest at the rate of 2%/year compounded annually, every year after 35 until his retirement age at age 65. At the same time, his wife Vanessa deposits $4900/year into a Roth IRA earning interest at the ...
Saturday, March 22, 2014 by Dee

math
solve the equation 5coshx + 3sinhx = 4
Saturday, March 22, 2014 by Alice

math
regular selling price of A is 100. promo price of A is 85. New special price offered for A is 75. What will be the discount % of A
Saturday, March 22, 2014 by Anonymous

math
Jessica earns $53.35 in 5.5 hours. How much does Jessica earn in 1 hour?
Saturday, March 22, 2014 by kathy

math
Please !!!! What can i write a letter about my math best teacher ..???
Friday, March 21, 2014 by Iqbal

Math
An architect has allocated a rectangular space of 465ft^2 for square dining room and a 16ft wide kitchen. Find both the width of the square dining room and the length of the entire rectangular space.
Friday, March 21, 2014 by Pam

Math
The number of tickets sold each day for an upcoming performance of Handels Messiah is given by N(x)=-0.4x^2+11.2x+13, where x is the number of days since the concert was first announced. When will daily ticket sales peak and how many tickets will be sold that day?
Friday, March 21, 2014 by Pam

math
A cylinder can held 105 Liters of milk a) ignoring the thickness of the material calculate the volume of the cylinder in cm(cube).
Friday, March 21, 2014 by santoniann

math
The life of automobile voltage regulators has an exponential distribution with a mean life of six years. You purchase an automobile that is six years old, with a working voltage regulator and plan to own it for three years. a)What is the probability that the voltage regulator ...
Friday, March 21, 2014 by ash

math
How do you find the area of a circle with a diameter of 26 feet???
Friday, March 21, 2014 by kim

math
describe a situation in which you might use each calculation a)9/8 divided by 2/3 b)1 and 2/3 divided by 2 and 2/3
Friday, March 21, 2014 by Mari

math
A farmer wants to construct a pen with 100 feet fencing. The pen will be divided into two areas. Find the dimensions of the big pen. You may use your calculator or the fact that the x-coordinate of the vertex of a parabola is x=-b/2a. I would like to show a picture but somehow...
Friday, March 21, 2014 by dave

Math
I know when you decrease the height of a cone by half that the volume decreases by half from plugging in the numbers in the formula. However, I don't how to explain in words why a decrease in height by half results in a decrease in the volume by half. Thanks..
Friday, March 21, 2014 by Brandi

Math
Today you deposited $5000 into a savings account paying 12% interest. How much should you have in 15 years?
Friday, March 21, 2014 by lisa

Math
if I have 1 defect in a batch of 54 widgets, what is my quality index?
Friday, March 21, 2014 by Jane

math
How many faces, edges, and vertices does the solid figure have? image
Friday, March 21, 2014 by lina

Math - PreCalc (12th Grade)
If the distance covered by an object in time t is given by s(t) = 2t2 + 3t, where s(t) is in meters and t is in seconds, what is the average velocity over the interval from 2 seconds to 4 seconds? A) 15 meters/second B) 14 meters/second C) 13 meters/second D) 12 meters/second ...
Friday, March 21, 2014 by Shawna

Math - PreCalc (12th Grade)
The function f(x) = 6x + 5 is defined over the interval [-1, 4]. If the interval is divided into n equal parts, what is the value of the right end point of the first rectangle?
Friday, March 21, 2014 by Shawna

Math - PreCalc (12th Grade)
What is the value of this expression when n approaches infinity? 4−(4/n)+(5/n)+(15/3n^2) A) 20 B) 10 C) 5 D) 4 E) 1
Friday, March 21, 2014 by Shawna

Math - PreCalc (12th Grade)
How many 4-digit numbers are possible if the hundreds digit is 8 and if repetition of digits is allowed? A) 100 B) 1,000 C) 9,000 D) 900 E) 1,800
Friday, March 21, 2014 by Shawna

Math - PreCalc (12th Grade)
Which statement about a uniform probability distribution defined on a given interval is true? A) The mean is always 0. B) The mean is always 1. C) The standard deviation is always 1. D) The mean is the midpoint of the interval. E) The standard deviation is equal to the width ...
Friday, March 21, 2014 by Shawna

Math - PreCalc (12th Grade)
The function f(x) = x2 − 5 is defined over the interval [0, 5]. If the interval is divided into n equal parts, what is the area of the kth rectangle from the right? A) [(2+k(5/n))^2+5](5/n) B) [(k(3/n))^2−5](5/n) C) [(k(5/n))^2+5](5/n) D) [(k(3/n))^2+3](5/n) E) [(k...
Friday, March 21, 2014 by Shawna

Math and Music
I have to do a presentation on how math and music relate. I have found some things and facts but everything is so complicated. If someone could help explain to me how I can narrow my topic down and make a presentation that is simple but effective. It can be anything within the...
Friday, March 21, 2014 by Madi

Math - PreCalc (12th Grade)
A fair coin is tossed 3 times in a row. If X is the number of heads counted, what is the mean of the probability distribution of X? A) 1.0 B) 1.5 C) 2.0 D) 2.5 E) 3.0
Friday, March 21, 2014 by Shawna

Math - PreCalc (12th Grade)
The function f(x) = 2x + 1 is defined over the interval [2, 5]. If the interval is divided into n equal parts, what is the value of the function at the right endpoint of the kth rectangle? A) 2+3k/n B) 4+3k/n C) 4+6k/n D) 5+6k/n E) 5+3k/n
Friday, March 21, 2014 by Shawna

math
Rewrite the following equation in the center-radius form of the equation of a circle. x2 - 2x + y2 + 2y - 2 = 0
Friday, March 21, 2014 by Elizabeth

math
A fruit seller bought m pears and twice as many mangoes. He also bought 10 fewer peaches than pears. Each pear cost RM 0.40 cents, each mango cost RM 0.50 cents while each peach cost RM 0.80. If the fruit seller paid RM 102. Find the value of m.
Friday, March 21, 2014 by doremi

Math - PreCalc (12th Grade)
Use the inverse matrix to solve this system of equations: 4x+3y=7.5 7x+9z=14 4y-z=8.3 4,3,0 7,0,9 0,4,-1
Friday, March 21, 2014 by Shawna

Math
What does Please Excuse My Dear Aunt Sally mean?
Friday, March 21, 2014 by Anonymous

math help please
Let f:ℤ+ → ℤ+ be the function defined by: for each x ∈ ℤ+, f(x) is the number of positive divisors of x. - find integers m, n, and k so tha f(m)=3, f(n) = 4 anf f(k) = 5 -is f one-to one? Explain, is f unto? prove is it true that all positive odd ...
Friday, March 21, 2014 by excel

Math: Thinking Mathematically
A flagpole has the height of 16 yards It will be supported by three cables, each of which is attached to the flagpole at a point 4 yards below the top of the pole and attached to the ground at point that is 9 yards from the base of the pole, Find the total number of feet of ...
Friday, March 21, 2014 by Brandon

math
A state fair had 1,0​19,887 people in attendan​ce. The fair committee performed a survey. The&n​bsp;question was, “What&n​bsp;do fairgoers enjoy mo​st ...
Friday, March 21, 2014 by joe

math
write 3 out of 4 +4 out of 9 into a mixed number
Friday, March 21, 2014 by ariana l. collins

math
Anna bought a camera that was 20% off the regular price of $1,080. If an 8% sales tax was added to the cost of the camera, what was the total price she paid for it?
Friday, March 21, 2014 by **please help**

math
Which expression represents the sum or (2x-5y) and (x+y)?
Friday, March 21, 2014 by **please help**

Need Math Help Please
in probability why are tree diagrams more useful than to use tables ?? please explain to me in a paragraph so i understand completely and could you please show me an example where i would have to use the tree diagram, and why i couldnt use a table???
Thursday, March 20, 2014 by Annie

Need math help please
could someone please give me an example not an example using coins, marbles, spinner, like something different that would explain the difference b/w theoretical and experimental probability.
Thursday, March 20, 2014 by Annie

math
The area of a rectangular space is 128 square feet. a. Find all the possible pairs of whole number dimensions in feet. b. Explain which pair allows enough space for a car to park. c. If the length of the space is x feet, how would you describ e the width using the area and the...
Thursday, March 20, 2014 by Anonymous

Math ~ Check Answers ~
3. In the following list of data, find the range: 21, 28, 31, 35, 39, 43, 51, 60. 35 37 39****** 40 Pat recorded the weights of the first 10 fish she caught and released at Mirror Lake this season. The weights were 8 lb, 6 lb, 9 lb, 6 lb, 7 lb, 5 lb, 7 lb, 6 lb, 23 lb, and 6 ...
Thursday, March 20, 2014 by Cindy

Math ~ Check Answers ~ASAP
3. In the following list of data, find the range: 21, 28, 31, 35, 39, 43, 51, 60. 35 37 39****** 40 Pat recorded the weights of the first 10 fish she caught and released at Mirror Lake this season. The weights were 8 lb, 6 lb, 9 lb, 6 lb, 7 lb, 5 lb, 7 lb, 6 lb, 23 lb, and 6 ...
Thursday, March 20, 2014 by Chloé

Math
The base of a triangle is 6cm greater than the height. The area is 20cm^2. Find the height and the length of the base.
Thursday, March 20, 2014 by Pam

Math
How do graph the parent quadratic function on calculator? I need some assistance so I can start my Hw. I have a TI-83 pus calculator
Thursday, March 20, 2014 by Anonymous

math
If the rectangle is 53 cm on one side and the other side is 29 cm what is the perimeter of the rectangle.
Thursday, March 20, 2014 by zoye

Math
An architect has allocated a rectanglular space of 646ft^2 for a square dining room and a 15ft wide kitchen. Find both the width of the square dining room and the length of the entire rectangular space.
Thursday, March 20, 2014 by Pam

Math
4. Your article will be featured on the front page of the World section of the newspaper, as well as on-line. The article is to be placed in the shaded section below, which measures 4 inches wide by 9 inches long (not drawn to scale). Your editor has stated that your graph is...
Thursday, March 20, 2014 by A

Math
The names, or notes, of all the white keys on a piano are written on pieces of paper and placed in a cup. There are 7 sets of the notes D, E, F, and G and 8 sets of the notes A, B,and C. If a person draws one note out of the cup without looking, what are his or her chances of ...
Thursday, March 20, 2014 by Alexa

math
Date US Population Jul 1, 2012 313.85 million Jul 1, 2011 311.59 million Jul 1, 2010 309.35 million Jul 1, 2009 306.77 million Jul 1, 2008 304.09 million Jul 1, 2007 301.23 million Jul 1, 2006 298.38 million Jul 1, 2005 295.52 million Jul 1, 2004 292.81 million Jul 1, 2003 ...
Thursday, March 20, 2014 by A

math
proctor exam mat106
Thursday, March 20, 2014 by cool kid

math
Students have to choose one to five topping for their sundaes chocolate syrup,peanuts,whipped crime, sprinkles, and cherries. Assuming all toppings are equality likely to be chosen, what is the probability that a student chooses a Sunday with peanuts only?
Thursday, March 20, 2014 by Cindy

Math
Type Amount Recycled (%) Amount Recycled (in millions of tons) Paper and Paperboard 52.8 45.9 Yard Trimmings 22.2 19.3 Metals 8.6 7.5 Glass 3.7 3.2 Plastics 3.1 2.7 Wood 2.7 2.3 Food waste 1.6 1.4 Other 5.3 4.6 Date US Population Jul 1, 2012 313.85 million Jul 1, 2011 311.59 ...
Thursday, March 20, 2014 by Han

math
x=2+y y/2=-3+x
Thursday, March 20, 2014 by coriza

Math
1. You want to deliver an article with the most impact and easy reading to the readers; you decide that you need to present the data as percentages. For each of the data statements, though, none of them have percent’s. Convert each statement’s data into a percentage...
Thursday, March 20, 2014 by Han

math
What will be the cost of 275 bags of sugar containing 98 pounds each at $0.12 a pound?
Thursday, March 20, 2014 by Anonymous

math
Mr. Willams recieves an annual salary of $54,000. What is his average monthly salary?
Thursday, March 20, 2014 by Anonymous

math
Ms. M is buying a 6 pound roast at $1.05 a pound. What will her change be from a ten dollar bill?
Thursday, March 20, 2014 by Anonymous

Algebra 1
Hi! I'm doing my math homework, but I got confused. Can someone please help me how to solve simplest radical forms with an example? With square roots?
Thursday, March 20, 2014 by Bob

math
Jorge sees that there are small and large squares in the tile design belo.how many squares are there in all in the design?
Thursday, March 20, 2014 by erika

Math HELP!!!!!!!!
A superhero is trying to leap over a tall building. The function f(x)=-16x^2+200x gives the superheroes height in feet as a function of time. The building is 612 feet high. Will the superhero make it over the building? Explain.
Thursday, March 20, 2014 by The doctor

MATH HELP
In desperate need of help! solve by factoring. 1. x^2=-25+10x 2. 2x^2+9x=5 3. The length of a square is 4x-3. Find the area in terms of x.
Thursday, March 20, 2014 by Anonymous

Math- please help!!!
please help me solve these problems! Thank you! 1. Simplify: (3p^5)(5p^2)+(7p^3)(2p^4) 2. Simplify: (6x^2-2xy+3y^2)-(4x^2-xy-y^2)
Thursday, March 20, 2014 by Anonymous

math
this number is less then200. the ones digit is 5 less then 10. the tens digit is 2 more then the ones digit. what is the number?
Thursday, March 20, 2014 by yaed

math
Jeff is repairing his sleeping tent. After measuring he find he needs 90 inches of new canvas. What will it cost at $1.88 a yard?
Thursday, March 20, 2014 by Anonymous

math
William helped his father pack 1000 tomato plants. He put 25 plants in a box. They sold them for $2.25 a box. How much did they recieve for the plants?
Thursday, March 20, 2014 by Anonymous

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