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July 26, 2014

July 26, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**Math**

(y^2-y+2)/(y+2)
*Wednesday, April 30, 2014 at 3:39pm*

**Math (check)**

Masaru works as a salesperson and earns an hourly wage plus commission.He works 35 hours per week, at a rate of $11.75 per hour. His commission is about $125.00 per week. his expenses account for about 85% of his income. A. How much money does he put into savings in one year? ...
*Wednesday, April 30, 2014 at 3:23pm*

**Math**

A card is drawn at random from a standard deck of 52 playing cards. What is the probability of drawing a red card or a black face card?
*Wednesday, April 30, 2014 at 2:57pm*

**Math**

(n^2 – 5n + 4) / (n – 4)
*Wednesday, April 30, 2014 at 2:50pm*

**math**

what percent is 6,944.85 of 154,330.00
*Wednesday, April 30, 2014 at 2:40pm*

**math**

3y + 2x = 3
*Wednesday, April 30, 2014 at 2:11pm*

**math**

what is 4.5 % of $154,330.00
*Wednesday, April 30, 2014 at 1:51pm*

**math**

1. Which graph might show the temperature during a 24-hour period? (1 point) A B C D 2. Which graph might show the amount of money in a bank account if money is never taken out? (1 point) A B C D 3. Which graph might ...
*Wednesday, April 30, 2014 at 12:00pm*

**math**

If 9 apples plus 4 pears cost $2.6 and if 4 pears pluse 9 apples cost $1.90 what does each apple and pear cost
*Wednesday, April 30, 2014 at 11:31am*

**Math logarithms**

The graph, y=lg x is rotated 90 degrees anticlockwise around the origin. What is the equation of the new graph? Please provide proof.
*Wednesday, April 30, 2014 at 11:30am*

**math**

The product of twice a number and three is the same as the difference of five times the number and 9/4. Find the number.
*Wednesday, April 30, 2014 at 11:02am*

**Math**

If a mixture of 24 lb. of cement, 48 lb. of sand, and 63 lb. of gravel is needed to make 1 cubic foot of concrete, how many pounds of sand are needed to pour a pool deck of 156 cubic feet?
*Wednesday, April 30, 2014 at 10:17am*

**Math**

If a pool deck of 650 square feet is to be laid with concrete 3" thick, what volume of concrete will have to be poured in cubic yards? (Give answer in nearest whole cubic yard.)
*Wednesday, April 30, 2014 at 10:17am*

**Math**

The Smiths have a pool that is 20 feet by 35 feet. A 5 foot wide deck completely surrounds the pool. The average depth of the pool = 6 feet. What are the approximate overall dimensions of the pool and deck?
*Wednesday, April 30, 2014 at 10:16am*

**Math**

A driveway 18 ft. wide and 36 ft. long is to be paved with concrete 3 in. thick. How many cubic yards of concrete are required?
*Wednesday, April 30, 2014 at 10:16am*

**Math**

A plumber's assistant's rate of pay is $0.75 per cubic foot of earth moved. He moves 220 cubic feet of earth to dig a trench. He moves the same amount to fill the trench. What is his pay for this job?
*Wednesday, April 30, 2014 at 10:16am*

**Math**

A plumber is laying pipe. His assistant digs a trench in roughly the shape of a rectangular solid measuring 150 ft. in length, 9 inches deep along both sides, and 12 inches wide at the top and bottom. How many cubic feet of earth did he remove (to the nearest tenth)?
*Wednesday, April 30, 2014 at 10:16am*

**Math**

A steel reinforcing rod is 12 ft. long and 1" thick in diameter. If a cubic foot of steel weighs 490 lb., how much does the rod weigh (to the nearest pound)?
*Wednesday, April 30, 2014 at 10:15am*

**Math**

If a pool holds 22,000 gallons, how long will it take to fill the pool at a rate of 400 gallons per minute, rounded off to the nearest minute?
*Wednesday, April 30, 2014 at 10:15am*

**math**

A swimming pool 35 ft. long and 20 ft. wide is filled to an average depth of 5ft. How many gallons of water does the pool contain if a cubic foot holds 7 gallons?
*Wednesday, April 30, 2014 at 10:14am*

**math**

what number is 66 2/3% of 81?
*Wednesday, April 30, 2014 at 8:12am*

**math**

Determine the distance to which the 90 kg painter can climb without causing the 4 m ladder to slip at its lower end A as shown in Figure 1. The top of the 15 kg ladder has a smaller roller, and at the ground the coefficient of static friction is 0.25. The mass center of the ...
*Wednesday, April 30, 2014 at 7:27am*

**math**

A sector of a circle subtending an angle 300 degrees at the centre is used to form a cone with base radius 6cm. Find the (a.)radius of the circle (b.)volume of the cone (c.)area of the minor sector of the circle
*Wednesday, April 30, 2014 at 5:44am*

**Math**

Find x so the pitch is 1/3. There is also a number below the x in the figure which is 24 feet. So how do I solve?
*Wednesday, April 30, 2014 at 2:01am*

**Math**

The steepest section of a track has a rise of 2240 meters for a horizontal distance of 6100 meters. what is the grade section of this track?
*Wednesday, April 30, 2014 at 1:52am*

**math**

A regular hexagon is drawn inside of a circle so that each of its vertices touches the circle. The diameter of the circle is 4 centimeters and the perimeter of the hexagon is 12 centimeters. How much longer is the circumference of the circle than the perimeter of the hexagon...
*Wednesday, April 30, 2014 at 1:38am*

**Math**

There are 92 boys. There are 14 fewers girls. How many are the girls are there?
*Wednesday, April 30, 2014 at 1:10am*

***math (7)**

Evaluate the first partial derivatives of the function at the given point. f(x, y) = x^2 + xy + y^2 + 2x - y ; at (-5, 4) fx(-5, 4) = ? fy(-5, 4) = ?
*Tuesday, April 29, 2014 at 11:52pm*

**4 the grade math**

What's 3/4 of blank=75
*Tuesday, April 29, 2014 at 11:35pm*

**Math**

You want to conduct a survey to find out what sport the students at your school prefer to play. a) You interview 20 boys playing football at lunch. Is this a random sample? explain b) The survey question you ask is, ''What is your favorite sport to play?'' Is ...
*Tuesday, April 29, 2014 at 11:19pm*

**Math**

There are 3,000 people at a concert. You survey a random sample of 200 people and find that for 35 of them this is the first concert they have ever attended. Estimate how many people are attending their first concert that night.
*Tuesday, April 29, 2014 at 11:16pm*

**Math**

A manufacturer samples 100 wires for quality testing. Four of the wires are found to be defective. If 750 wires are produced in one hour, how many should the manufacturer expect to be defective? A.30 B.60 C.75 D.96
*Tuesday, April 29, 2014 at 11:13pm*

**Math**

In a sample of 50 museum visitors one afternoon, 22 were female and 28 were male. If there were 800 museum visitors that afternoon, estimate the number of visitors who were female. A.220 B.352 C.448 D.700 Is the answer C?
*Tuesday, April 29, 2014 at 11:10pm*

**Algebra 1 math**

Deborah rolls two fair dice. What is the probability that the sum of the numbers rolled is 7?
*Tuesday, April 29, 2014 at 11:07pm*

**Math**

Wildlife biologists catch, tag, and release 32 bears at a game reserve. Later,10 bears are caught and 4 of them have tags. Estimate the total number of bears at the game reserve. A.320 B.316 C.128 D.80 Is the answer D?
*Tuesday, April 29, 2014 at 11:07pm*

**math (4)**

Country Workshop manufactures both finished and unfinished furniture for the home. The estimated quantities demanded each week of its rolltop desks in the finished and unfinished versions are x and y units when the corresponding unit prices, in dollars, are described, ...
*Tuesday, April 29, 2014 at 11:06pm*

**Math **

A fish and game worker catches, tags, and releases 120 trout in a lake. Later, she catches 84 trout and finds tags on 30 of them. Estimate the number of trout in the lake. A.43 B.234 C.336 D.3600 Is it C?
*Tuesday, April 29, 2014 at 11:03pm*

**Math**

If I have 5 yellow marbles and 7 blue marbles, what fraction are yellow?
*Tuesday, April 29, 2014 at 10:42pm*

**math**

empirical probability and theoretical probability of 2 tails - 210 1 tail - 480 0 tail - 310
*Tuesday, April 29, 2014 at 10:17pm*

**Math**

Two dice are rolled what are the odds of getting a smaller number on the second roll? P ( same number or sum greater than 8)
*Tuesday, April 29, 2014 at 10:12pm*

**Math**

Math - Cindy, Tuesday, April 29, 2014 at 8:44pm At Bobs diner, it costs $8.00 to purchase two hamburgers and one order of fries. The "family pack" costs 30.00 and comes with six hamburgers and six orders of fries. If the prices are constant,how much does one ...
*Tuesday, April 29, 2014 at 8:48pm*

**Math**

What is 4x1 1/2?
*Tuesday, April 29, 2014 at 8:46pm*

**Math**

The length of a rectangle is 11 cm more than its width. The area of the rectangle is 2040 cm^2. Find the dimensions of the rectangle.
*Tuesday, April 29, 2014 at 8:43pm*

**math**

a coding supervisor must determine the number of full-time equivalents (FTEs) needed to code 500 discharges per week. If it takes an average of 20 minutes to code each record and each coder works 7.5 productive hours per day, how many FTEs will the coding supervisor need?
*Tuesday, April 29, 2014 at 8:32pm*

**Math**

Mack rolls a 15-sided cube 45 times, what would you predict the probability to be of Mack's rolling a number less than 5?
*Tuesday, April 29, 2014 at 8:19pm*

**Math**

Hector has $450 and saves 20 per week. Tim has $1200and spends $30 per week.write a system equation for this situation
*Tuesday, April 29, 2014 at 8:11pm*

**math**

A clerk is packing cubes into a box each cube has edges of 6 inches the dimensions of the box are 15 inches by 30 i.ches by 18 inches find how many cubes will fit in the box ? I dont know how to solve and explain how i found my answer please
*Tuesday, April 29, 2014 at 7:40pm*

**math**

She also needs three pieces of blue satin that total of 9/4 yards. simplify this sum.
*Tuesday, April 29, 2014 at 7:16pm*

**math**

what is the volume of a cereal box that is 6.5 inches long 4.25 inches wide and 10 inches tall ?
*Tuesday, April 29, 2014 at 7:08pm*

**math**

(2y^3 -3y^2 +3y -4)/(y-2)
*Tuesday, April 29, 2014 at 6:48pm*

**math**

24^2 -10x -21/32^2 -18
*Tuesday, April 29, 2014 at 6:46pm*

**math**

(x^2-4x+6)(x-3)^-1
*Tuesday, April 29, 2014 at 6:37pm*

**math**

Sara has x ribbons and 4 extra ribbons. Jill has 12 ribbons. Express the number of ribbons that Sara has in terms of x.
*Tuesday, April 29, 2014 at 6:25pm*

**Math**

How long is 3 quarter hours
*Tuesday, April 29, 2014 at 6:19pm*

**Math**

Circle Graphs Month | Snowfall | Percent | Angle Measure November | 1 | ? 1% | ? 3.6 December | 4 | ? 4% | ? 14.4 January | 5 | ? 5% | ? 18 February | 2 | ? 2% | ? 7.2 How would I make a circle graph? Or did I do something wrong? The month and snowfall were given and I found ...
*Tuesday, April 29, 2014 at 5:48pm*

**math**

You are buying tickets for rides at a carnival. Tickets cost $2 each. You want to spend no more than $30 on tickets. Write an inequality to represent this situation.
*Tuesday, April 29, 2014 at 5:46pm*

**grade 3 math**

1) what is the greates perimeter of a rectangle with an area of 39 square feet? 2) What is the least perimeter of a rectangle with an area of 32 square feet? 3) A rectangle has an area of 42 square inches. Which has a greater perimeter, the rectangle with the dimensions 21 x2 ...
*Tuesday, April 29, 2014 at 5:14pm*

**grade 3 math**

two rectangles have an area of 36 square inches. Name two possible perimeters for the rectangles.
*Tuesday, April 29, 2014 at 5:10pm*

**math **

Terry wants to buy one pair of moccasins. She can choose from some that costs $22.50, $27.00, $20.95, and $24.75. How much will Terry save if she buys the least expensive instead of the most expensive pair?
*Tuesday, April 29, 2014 at 5:08pm*

**math**

Simplify by combining like terms. 9m + 5m - 4
*Tuesday, April 29, 2014 at 5:06pm*

**math**

Can 3t^2+5t-2 be factored?
*Tuesday, April 29, 2014 at 4:02pm*

**Math**

You have to choose a battery brand to use in your smoke alarm. Company A's batteries have a mean lifespan of 1.2 years, with a standard deviation of 0.1 years. Company B's batteries have a mean lifespan of 1.5 years, with a standard deviation of 0.9 years. Which brand ...
*Tuesday, April 29, 2014 at 3:37pm*

**math**

What would the graph look like for the linear function of y = 1/3x -4
*Tuesday, April 29, 2014 at 3:34pm*

**math**

If X = 2 4 6 8 y = 1 -2 -5 -8 What is the slope I know that slope = vertical change over horizontal change and rise over run
*Tuesday, April 29, 2014 at 3:21pm*

**math**

Hello there, im doing an equation and its mind boggling me badly so i want to see if im doing something wrong or not. It goes like this: sinx - Squareroot of 3/2 > 0 x € [0,2pi) i start by moving the sqroot of 3.. so i have sinx >sq3/2. as of that my resaults are 1,...
*Tuesday, April 29, 2014 at 2:51pm*

**Math -Help**

you have a space in your garden for 100 small flowering bulbs. Crocus bulbs cost $0.45 each, and daffodil bulbs cost $0.85 each. Your budget allows you to spend $55.80 on bulbs. How many crocus bulbs and how many daffodil bulbs can you buy?
*Tuesday, April 29, 2014 at 2:02pm*

**Helpppp Math!!!**

The market value (in thousands of dollars)of a certain home is a linear function of t, the time in years since 1990. In 1992 the market value was 68 thousand dollars, while in 1997 the market value was 79 thousand dollars -Find the slope of V as a linear function of t. Explain...
*Tuesday, April 29, 2014 at 1:56pm*

**Math! Helppppp**

Two poles are place 15 feet apart. One pole is 8 ft high and the other pole is 16 ft high. The top of each pole is attached to the base of the other by cable which run in a straight line. -Find the slopes of the lines defined by the two ropes. -How high above the ground is the...
*Tuesday, April 29, 2014 at 1:54pm*

**Math Help!**

-If one fish is twice as long as another,how do their weights compare? -If one fish is as heavy as another, how do their lengths compare? L- 31,33,35,37,39 W- 250,308,363,420,520
*Tuesday, April 29, 2014 at 1:23pm*

**math**

what percentage more is 2200 than 1725.
*Tuesday, April 29, 2014 at 12:54pm*

**Math **

What is the product of 659 and 95
*Tuesday, April 29, 2014 at 12:20pm*

**math 109**

Charlie wants to buy a $500 TV in 8 months. How much should he invest now at 4% simple interest to have the money in 8 months?
*Tuesday, April 29, 2014 at 12:11pm*

**math**

Which is M=300J/P solved for J? A. J=300PM B. J=300M/P C. J=300PM D. J=PM/300
*Tuesday, April 29, 2014 at 12:02pm*

**math (5)**

Country Workshop manufactures both finished and unfinished furniture for the home. The estimated quantities demanded each week of its rolltop desks in the finished and unfinished versions are x and y units when the corresponding unit prices, in dollars, are described, ...
*Tuesday, April 29, 2014 at 11:58am*

**math (3)**

Find the domain of the function. Write your answer in interval notation. (If you need to enter ∞ or -∞, type INFINITY or -INFINITY.) f(s,t)= sqrt(s^2+t^2) s = ? t = ?
*Tuesday, April 29, 2014 at 11:54am*

**Math **

Find the domain of the function. Write your answer in interval notation. (If you need to enter ∞ or -∞, type INFINITY or -INFINITY.) h(u,v) = sqrt(4-u^2-v^2) u^2+v^2 = ?
*Tuesday, April 29, 2014 at 11:54am*

**Math**

It takes 5 small fish to make 1 1/4 cup of ice cream. How many fish does it take to make 6 cups of ice cream?
*Tuesday, April 29, 2014 at 10:07am*

**math**

Sarah's parents are filling their swimming pool. She wants to know how long it will take. What unit is best used to give the rate of the water flowing into the pool? Her pool is 22,000 gallons. What unit will the answer to her question be answered in?
*Tuesday, April 29, 2014 at 9:12am*

**math**

if it takes hannah 6.5 hours to ride moped to gainesville from tamp and dylan travels 30 mph faster and it takes 2.6 to travel same distance how far is gainesville from tampa
*Tuesday, April 29, 2014 at 7:50am*

**math:mensuration plane shapes**

a cone that has a base diameter-8cm and height-3cm is cut into a circle's sector, what is the angle of the sector
*Tuesday, April 29, 2014 at 5:45am*

**math**

2^x = 0.125
*Tuesday, April 29, 2014 at 5:23am*

**Math**

In an isosceles triangle, each side is 18 inches more than the third side. The perimeter equals 54 inches. What is the length of each side?
*Monday, April 28, 2014 at 11:51pm*

**math**

1.FIND the bank discount and proceeds on the following loans i) RM4000 FOR 3 MONTHS at 10 1/2 percent ii) RM4215 FROM 10 june to 5 august of the same year at 10 percent
*Monday, April 28, 2014 at 11:33pm*

**business math**

A simple interest calculation provides a useful estimate of what compound interest will be if ____________
*Monday, April 28, 2014 at 11:10pm*

**Math**

What is the next number in the pattern 2,7,26,101,400
*Monday, April 28, 2014 at 10:30pm*

**math**

a cylindrical metal bar has a base radius of 2cm and a height of 9cm. it is melted down and recast into a tube. Find a side of the cube
*Monday, April 28, 2014 at 10:18pm*

**Math**

At which points do the lines intersect 2x+y=8 y=-3(x-3) A. 0,8 B. 3,-2 C. 2,4 D. 1,6
*Monday, April 28, 2014 at 10:05pm*

**Math Urgent!**

A manufacturer has recorded the profit P (in dollars) when there is a monthly advertising expenditure of A dollars. The data is recorded in the following table. A 200 500 800 1100 1300 P 8030 14,480 14,630 8480 860 (a) Find a quadratic model for pro fit as a function of ...
*Monday, April 28, 2014 at 9:57pm*

**math**

if two dependent samples of size 20 are used to test the difference between the means, the degrees of freedom for a t-statistic is 19, true or false
*Monday, April 28, 2014 at 9:27pm*

**MATH 12**

The total surface area of a square-based open top rectangular box is 12 square units. Find the dimensions of the box such that the volume is the maximum.
*Monday, April 28, 2014 at 9:19pm*

**Math (6)**

Country Workshop manufactures both finished and unfinished furniture for the home. The estimated quantities demanded each week of its rolltop desks in the finished and unfinished versions are x and y units when the corresponding unit prices, in dollars, are described, ...
*Monday, April 28, 2014 at 9:19pm*

**math (5)**

Country Workshop manufactures both finished and unfinished furniture for the home. The estimated quantities demanded each week of its rolltop desks in the finished and unfinished versions are x and y units when the corresponding unit prices, in dollars, are described, ...
*Monday, April 28, 2014 at 9:17pm*

**math (4)**

Find the domain of the function. Write your answer in interval notation. (If you need to enter ∞ or -∞, type INFINITY or -INFINITY.) h(u,v) = sqrt(4-u^2-v^2) u^2+v^2 = ?
*Monday, April 28, 2014 at 9:15pm*

**math (3)**

Find the domain of the function. Write your answer in interval notation. (If you need to enter ∞ or -∞, type INFINITY or -INFINITY.) f(s,t)= sqrt(s^2+t^2) s = ? t = ?
*Monday, April 28, 2014 at 9:13pm*

**math (2)**

Compute the following values for the given function. f(x, y) = 5xye^(x^2+y^2) a. f(0,0)= ? b. f(0,1)= ? c. f(1,1)= ? d. f(-1,-1)= ?
*Monday, April 28, 2014 at 9:10pm*

**math (1)**

Compute the following values for the given function. h(x,y)=(2x+8y)/(x-y) a. h(0,1)= ? b. h(-1,1)= ? c. h(2,1)= ? d. h(pi,-pi)= ?
*Monday, April 28, 2014 at 9:08pm*

**Math**

Karen sells tickets a movie theater. Last night she sold 128 tickets for a total of $1108. Adult's tickets cost $10 and children's tickets cost $6 how many of eac h kind of ticket did karen sell?
*Monday, April 28, 2014 at 9:07pm*

**Math Help **

Consider the quadratic equation (a) Solve the equation using the quadratic formula, expressing your answer in terms of k. (b) What condition on k will assure that the equation has exactly one solution? (c) What condition on k will assure that there are two real roots?
*Monday, April 28, 2014 at 9:06pm*

**Help- Math**

Newtons law of gravity states that the gravitational attraction F between two bodies is proportional to 1 over the square of the distance d between their centers. (a) Using k as the constant of proportionality, express F as a function of d. (b) What happens to F near the pole ...
*Monday, April 28, 2014 at 8:08pm*

**Math-Help**

A manufacturer has determined that pro t P (in dollars) is a quadratic function of dollars per month a spent on advertising. The relationship is given by p=1+50a-0.1a^2 if a is at most 500 dollars per month -How much should be spent on advertising if pro t is to be a maximum...
*Monday, April 28, 2014 at 8:06pm*

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