Thursday

October 23, 2014

October 23, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**math**

Which property is shown by 2+0=2? A. Associative property of addition B. Commutative property of addition C. Distributive property D. Identity property of addition Is the answer B?
*Monday, September 8, 2014 at 3:29pm*

**math**

Identify the solution(s) of the system of equations, if any. 6x + 4y = 0 y = 3 - 3x
*Monday, September 8, 2014 at 3:27pm*

**math**

the rational root of the equation 2x³ - x² - 4x + 2 = 0 is
*Monday, September 8, 2014 at 3:26pm*

**math**

if 4x³ + 8x² - x - 2 = 0 then the value of (2x + 3) is given by
*Monday, September 8, 2014 at 3:24pm*

**math**

Identify the solution(s) of the system of equations, if any. x + 3y = 7 6x - 9y = 6
*Monday, September 8, 2014 at 3:08pm*

**math 1 question**

Simplify the following expression: 5^2 - 4 / 5 +2 is it 3 or 26.2, i dont know which one, im confused.
*Monday, September 8, 2014 at 3:05pm*

**Math**

Convert this measurement to hundreth of a kilometre. 26 mi 385 yd. Could you please show formula on how you got this answer? I am stuck I keep getting the answer as 16 km but the answer is supposed to be 42.19 km Thank you
*Monday, September 8, 2014 at 2:48pm*

**Math**

1. What is the sale price of a music CD that is sold in a retail store for 25% off of the original price of $16? A. $4 B. $12 C. $16 D. $13 My answer is A. 2. What is the percentage markup on the cost of a drill bit set if the cost is $75 and the set is sold for a retail price...
*Monday, September 8, 2014 at 1:48pm*

**Math**

A media company divides 1 million copies of a new music CD into 100 equal groups before sipping the CD to 100 stores .how many CDs is the company shippi ng to each store? Please help me , i don't know the answer. Write the value of the underlined digit. 76,982 the value 9...
*Monday, September 8, 2014 at 1:34pm*

**math**

Rainfall for September in Fiji averages 11" according to World Travel Guide. This year it rained 3% less. How many inches did it rain this year? (Round to the nearest tenth.)
*Monday, September 8, 2014 at 11:59am*

**math**

In a triangle ABC a:b:c =4:5:6 then 3A+B=?
*Monday, September 8, 2014 at 11:50am*

**math**

Order of Magnitude (I'm not quite understanding it) 1) trying to 0.0000000734 estimated as the product with a single digit power of 10.*No multiple choice* 2) Trying to find the numbers that a greater than 7 x 10^-4 (Choose more than one answer type question) - 8 x 10^-4...
*Monday, September 8, 2014 at 11:14am*

**Math**

What is the parent function for h from h(x) = 4x?
*Monday, September 8, 2014 at 11:05am*

**math**

Consider the following system of equations. y = 2x - 2 y - 2x = 7 What can you conclude about the system of equations? The system of equations is inconsistent. The system of equations is dependent. The system of equations is independent. none of these
*Monday, September 8, 2014 at 11:00am*

**math**

A clothing store offers a 60% discount on all purchases. What is the discount in dollars (before tax) for an item originally costing $18.00 dollars?
*Monday, September 8, 2014 at 9:57am*

**math**

the expression that is equivalent to -6(x - 6).
*Monday, September 8, 2014 at 9:51am*

**math check answers**

1. If the price of a new digital media player is $249.99 and the cost to the store that sells it is $150, what is the markup of this electronic item? A. $100 B. $98.99 C. $99.99 D. $89.99 My answer C 2. What is the percentage markup of a digital media player that a store pays...
*Monday, September 8, 2014 at 9:44am*

**math**

A) Use numerals to write a ten digit number using the following information: - digit 5 is in millions, thousands and ones place -digit 7 is in hundred millions place -digit 8 is in hundred thousand place -digit 1 is in tens place -digit 4 in in billions place -digit 2 is in ...
*Monday, September 8, 2014 at 9:28am*

**math proportions**

What is 1000/x = 25/64
*Monday, September 8, 2014 at 8:56am*

**Math**

The exponential is Y= 800(2(^0.25x) rearrange the equation for x
*Monday, September 8, 2014 at 8:02am*

**Math**

in 1626 peter minuit purchase manhattan island for $24. Assuming an exponential rate of inflation of 6% per year, how much will manhattan be worth in 2013 ?
*Monday, September 8, 2014 at 6:49am*

**math**

There are 40 students. 16 students missed class. What % of students attended class
*Monday, September 8, 2014 at 1:30am*

**math**

You can sell 170 pet chias per week if they are marked at $1 each, but only 160 each week if they are marked at $2/chia. Your chia supplier is prepared to sell you 80 chias each week if they are marked at $1/chia, and 170 each week if they are marked at $2 per chia.
*Monday, September 8, 2014 at 12:01am*

**math**

6/ 4 1/5=?/12 1/2=17 6/7 I cannot figure out how to get this 17 & 6/7 as an answer
*Sunday, September 7, 2014 at 10:59pm*

**math**

A merchant blends tea that sells for $4.40 a pound with tea that sells for $2.30 a pound to produce 120 lb of a mixture that sells for $3.00 a pound. How many pounds of each type of tea does the merchant use in the blend?
*Sunday, September 7, 2014 at 10:42pm*

**Math**

How many x-intercepts and how many local extrema does the polynomial P(x)= x(sqrt)3-4x have? How many x-intercepts and how many local extrema does the polynomial Q(x)=x^3-4x have? and If a>0, how many x-intercepts and how many local extrema does each of the polynomials P(x...
*Sunday, September 7, 2014 at 10:41pm*

**math**

18s^9 t^3 - 2s^9 t^2 = 9 can anyone explain pleases,thanks
*Sunday, September 7, 2014 at 10:14pm*

**Calculus-Math**

f(x) = (1/2)x ln(x^6) (−1, 0) (a) Find an equation of the tangent line to the graph of f at the given point. y=
*Sunday, September 7, 2014 at 10:10pm*

**Math**

P;ease help me with the steps to solve this ratio 34:20=2:?
*Sunday, September 7, 2014 at 9:36pm*

**8th grade math**

How do you express 3.16 x 10 to the 3rd power in standard decimal notation form.
*Sunday, September 7, 2014 at 9:30pm*

**math**

341- blank = a number between 115 and 120
*Sunday, September 7, 2014 at 9:29pm*

**math**

One cubic meter (1.00 m3) of aluminum has a mass of 2.70E+3kg, and 1.00m3 of silver has a mass of 1.05E+4kg. Find the radius of an aluminum sphere whose mass is the same as that of an silver sphere of radius 1.07cm.
*Sunday, September 7, 2014 at 9:24pm*

**Math**

Please ,look the Q and answers (Nnn) ..
*Sunday, September 7, 2014 at 9:22pm*

**math**

What is 12p^7 - 2p^7
*Sunday, September 7, 2014 at 9:05pm*

**math**

The least common multiple of two numbers is 60, and one number is 7 less than the other number. What are the numbers? Justify your answer.
*Sunday, September 7, 2014 at 8:50pm*

**math**

How would you write the verbal representation of a decimal?
*Sunday, September 7, 2014 at 8:43pm*

**math**

4÷√2 = ?
*Sunday, September 7, 2014 at 8:25pm*

**business math**

. Ludwig borrowed $8,000 on July 20, at 11% interest. If the loan was due on October 17, what was the amount of interest on the loan using the exact interest method?
*Sunday, September 7, 2014 at 5:55pm*

**Quick math help**

Points EC bisects points AD at C. For each of the following, find the value of 'x' and the measure of the indicated segment. Please correct me if I'm wrong! 1. AC= 3x+6 and CD=2x+14 x=_______ AC=______ Answer: x=8 AC= 30 2. AC= 5x-8 and CD=16-3x x=______ AD=_____ ...
*Sunday, September 7, 2014 at 5:41pm*

**Math - Urgent**

Determine how each multiplication or division pattern is formed. Then write the next two numbers a) 81, -27, 9 ... b) 5, -20, 80...
*Sunday, September 7, 2014 at 5:21pm*

**math**

Find an equation of the line that satisfies the given conditions. Through (−7, −12); perpendicular to the line passing through (−4, 0) and (0, −2)
*Sunday, September 7, 2014 at 5:19pm*

**Math**

"How big is 1 million? How many ones are there in 1,000,000? Answer1: 1 Answer2: 1000,1000 How many hundreds are there in 1 million ? Answer1: 10,000 Answer2: 100 How many hundred thousands are in 1 million ? Answer1: 10 Answer2: 100,000 How many ten thousands are there ...
*Sunday, September 7, 2014 at 5:17pm*

**Math**

Ok so... -4 (2 +8) = (-4 • 2) + (-4 •N) What would N be?
*Sunday, September 7, 2014 at 4:55pm*

**science/math (mean)**

Find the mean Sample Value 1- 41.93 2- 12.55 3- 48.07 4- 90.81 5- 18.45 6- 55.81 I came up with 44.60 the online program "said close but check to see if yo made a round error" and at least three decimal places
*Sunday, September 7, 2014 at 4:51pm*

**math**

Jerry King is a server in a restaurant that pays a salary of $22 per day. He also averages tips of 18% of his total gross food orders. Last week he worked 6 days and had total food orders of $2,766.50. What was his total gross pay for the week?
*Sunday, September 7, 2014 at 4:49pm*

**math 8**

5. 8^3 * 8^7 (simplify) 11. ((5/8))^3 (simplify) 12. ((-2/9)^3)^5 16. 3^2 * 3^x = 3^12
*Sunday, September 7, 2014 at 4:16pm*

**C programming**

I am suppose to create a code that uses the pow function in math.h to calculate the hyperbolic cosine when the user inputs an angle x. the equation I have to use is cosh x= e^x + e^-x /2 can someone check my code. I am not sure what i am doing wrong. do I have to declare the ...
*Sunday, September 7, 2014 at 3:54pm*

**math 12**

Here is question on an math assignment I was given, I have no clue what it is even asking. It's a Challenge Yourself question, I've typed it exactly how it is on my paper: A student is having difficult figuring out what is wrong with his proof: Let C=D C^2=CD C^2 - D^2...
*Sunday, September 7, 2014 at 3:24pm*

**math**

Given that: 4(2g + 104) - 96 = 504 + 6(g - 14), solve for g. i'm confused on how to set this problem up - if anyone could help that would be great. thank you.
*Sunday, September 7, 2014 at 2:56pm*

**math**

A rectangular box is to have a square base and a volume of 30 ft3. The material for the base costs 33¢/ft2, the material for the sides costs 10¢/ft2, and the material for the top costs 24¢/ft2. Letting x denote the length of one side of the base, find a function...
*Sunday, September 7, 2014 at 2:46pm*

**math**

If 1mechanic can do 4 machines in 6 hours how many machines can 48 mechanics do in 160 hours?
*Sunday, September 7, 2014 at 2:03pm*

**Math**

When graphing,do I always have to number the scale with a1first?
*Sunday, September 7, 2014 at 1:56pm*

**Math**

Mary has nickels, dimes and quarters worth $12:85. If the number of dimes and the number of quarters is more than twice the number of dimes, how many more dimes are there.
*Sunday, September 7, 2014 at 1:38pm*

**Math**

Does randomization relate to real world data?
*Sunday, September 7, 2014 at 1:37pm*

**Math**

Sadiq dropped his watch into a lake. The depth of the lake is 5 meters. Sadiq can dive down towards the bottom of the lake at a speed of 2 meters per second, but can swim upwards at a rate of 1 meter per second. How long will it take Sadiq to get his watch and return to the ...
*Sunday, September 7, 2014 at 12:48pm*

**Math**

What would be the new ordered pairs of reflecting the figure formed by (-1, 5), (-2, 2), (3, 2), and (2, 5)?
*Sunday, September 7, 2014 at 12:44pm*

**Math - Urgent**

The air temperature is -10 degree Celsius. With the wind blowing at a speed of 15 km/h, this temperate feels like -17 degrees Celsius. How many degrees does the temperature change because pf the wind chill?
*Sunday, September 7, 2014 at 11:13am*

**math**

Find the area of a segment AYB if radius of a circle is 21cm angle AOB is equal to 120degree.
*Sunday, September 7, 2014 at 10:27am*

**math**

The dimension of a closed cuboid box are in the ratio 5:4:3 if the total surface area is 0.94m^2,find the dimension of the box.
*Sunday, September 7, 2014 at 10:24am*

**Math**

Andy plans to build a rectangular dog pen in his backyard. A portion of the back wall of his house will serve as one side of the dog pen. If the perimeter of the dog pen must be 40 feet, which of the following widths will result in the maximum area? A. 6 ft B. 8 ft C. 10 ft D...
*Sunday, September 7, 2014 at 9:51am*

**math**

what is a five digit number less than 25,000 if each digits' value is one less than the digit to its right and is divisible by two and four
*Sunday, September 7, 2014 at 9:39am*

**math**

the average attendance of a class from monday to wednesday was 39 and that from wednesday to saturday was 39.5. What was the attendance on wednesday, if the average attendance from monday to saturday was 40 I did this:- m+t+w/3=39 w+Th+F+S/4=39.5 m+t+w+Th+F+S/6=40...
*Sunday, September 7, 2014 at 7:25am*

**Math**

john and bryan share rs 1500. if john gets twice as much as bryan. how much money does bryan have ?
*Sunday, September 7, 2014 at 7:16am*

**math**

show that csc2 theta - tan2 (90 deg - theta) = sin2 theta + sin2 (90 deg - theta)
*Sunday, September 7, 2014 at 4:47am*

**Math**

Find the exact value of sin(A+B) when angle A is arcsin(8/17) and angle B is arcsin(5/13)
*Sunday, September 7, 2014 at 2:32am*

**Math**

Market research tells you that if you set the price of an item @ 1.50, you will be able to sell 5000 items; and for every 10 cents you lower the price below 1.50 you will be able to sell another 1000 items. Let x be the # of items you can sell, and P = the price of an item. A...
*Sunday, September 7, 2014 at 2:00am*

**math**

Find the area of a segment AYB if the radius of a circle is 21cm and angle AOB is equal to 180degree.
*Sunday, September 7, 2014 at 1:15am*

**Math**

a photocopy store advertises the following prices: 5 cents per copy for the first 20 copies, 4 cents per copy for the 21st through 100th copy, and 3 cents per copy after the 100th copy. Let x be the # of copies, and let y = the total cost of the photocopying. find the equation...
*Sunday, September 7, 2014 at 12:00am*

**MATH HEL PLZ!!!!**

what is the reciprocal of 8??? i dont get how to do it.... can someone explain it???
*Saturday, September 6, 2014 at 10:11pm*

**Math**

Write the opposite of 0 Celsius and 32f temperature as integer. Plz help
*Saturday, September 6, 2014 at 9:50pm*

**math**

A Norman window has the shape of a rectangle surmounted by a semicircle. If the perimeter of the window is 16.200 ft. give the area A of the window in square feet when the width is 3.000 ft.
*Saturday, September 6, 2014 at 9:46pm*

**Math**

The air temperature is -10 degree Celsius. With the wind blowing at a speed of 15 km/h, this temperate feels like -17 degrees Celsius. How many degrees does the temperature change because pf the wind chill?
*Saturday, September 6, 2014 at 9:38pm*

**math **

what is the reciprocal of 8??? i dont get how to do it.... can someone explain it???
*Saturday, September 6, 2014 at 9:17pm*

**Math**

A tank is filling with water from a natural spring. Two days ago the water was 10 feet deep, and yesterday the water was 12 feet deep. Assume that the water depth continues to rise at this same rate after today
*Saturday, September 6, 2014 at 8:57pm*

**math**

Write an equation which models how old in years each of you will be when you are three times as old as the younger person use age 10 and 48?
*Saturday, September 6, 2014 at 7:48pm*

**Physics for Technology**

I have been out of school 27 years; no Algebra or Trigonometry training: only remedial math. This class is part of a Diploma program, no placement test required - I am out of my depth. I had a tutor for an hour last Tues., with another appt. this Tues. Yet, like I told my ...
*Saturday, September 6, 2014 at 7:36pm*

**math**

A triangle having three equal sides is necessary and sufficient for a triangle having three equal angles
*Saturday, September 6, 2014 at 7:10pm*

**Math**

A pilot flies in a straight path for 1 h 30 min. She then makes a course correction, heading 10 degrees to the right of her original course, and flies 2 h in the new direction. If she maintains a constant speed of 655 mi/h, how far is she from her starting position?
*Saturday, September 6, 2014 at 6:06pm*

**Math**

What would be the new ordered pairs of reflecting the points (-1, 5), (-2, 2), (3, 2), and (2, 5)?
*Saturday, September 6, 2014 at 6:06pm*

**Math**

When you calculate a mean, the sign of the quotient always depend on the sign of the dividend. Why?
*Saturday, September 6, 2014 at 4:48pm*

**Math**

Use <,>,or = |-8| _ -9 |-7| _ -8
*Saturday, September 6, 2014 at 3:26pm*

**Math**

Lindsey buy s a bag of each size of bouncy ball. She wants to put the same number of each size of bouncy ball into 5 party-favor bags. How many of each size of bouncy ball which she put in a bag?
*Saturday, September 6, 2014 at 1:18pm*

**Teaching 4Grade Math**

You play your Xbox 360 every day for a month. Each week you realize that every time you play, your battery lift goes down by 5% each week. Say you don’t play for two weeks, how much %___ are you saving a week by not playing.
*Saturday, September 6, 2014 at 8:48am*

**Math**

An all girl college began enrolling boys in 2005. By 2012 the ratio of boys to girls was 3 to 7. If there are 200 more girls than boys how many boys are there?
*Saturday, September 6, 2014 at 8:08am*

**math 1 question**

Suppose you are building a brick border for a garden by stacking rows of bricks on top of each other. If the height of each brick is 2.5 inches and r represents the number of rows, which algebraic expression would represent the height of the brick wall? 2.5 + r*** 2.5r + r 2.5...
*Saturday, September 6, 2014 at 8:07am*

**Math**

In above triangular prism,ab=3cm,ac=4cm,bc=5cm and cd12 cm,show that triangle ABC is a right-angled triangle
*Saturday, September 6, 2014 at 12:34am*

**math**

Starbucks sells a slice of Iced Lemon pound Cake for $2.45 and a bottle of Apple Juice for $1.75. If they run a food cost of 18% and a beverage cost of 8%, what is the gross profit on an order of 10 slices of pound cake and 6 bottles of Apple juice. Please show your work.
*Friday, September 5, 2014 at 11:40pm*

**math**

You have a box which contains only red marbles and blue marbles. The mass of one red marble is 16 grams, while the mass of one blue marble is 20 grams. If the box contains 21 red marbles and 18 blue marbles, what is the total mass of the marbles in the box?
*Friday, September 5, 2014 at 10:35pm*

**math**

If the average chicken lays 6 eggs in 7 days, how many chickens on average are needed to obtain 163 eggs per day?
*Friday, September 5, 2014 at 10:34pm*

**math**

Given that a - c = P, solve for P if a + b = 49 and b + c = 13
*Friday, September 5, 2014 at 10:33pm*

**6th grade math **

Integers from greatest to least... ( 6,17,-20,15,-19,26) can some help me ??
*Friday, September 5, 2014 at 10:20pm*

**Business Math**

Treadmill, cost is x, amount of markup $880.00, selling price of $2,335.00, what is percent markup based on cost?
*Friday, September 5, 2014 at 9:26pm*

**Business Math**

The Flower Power Bakery makes 200 cherry cheesecakes at a cost of $2.45 each. If a spoilage rate of 5% is anticipated, at what price should the cakes be sold to achieve a 40% markup based on cost?
*Friday, September 5, 2014 at 9:19pm*

**Business Math**

Carousel Toys has Romper Buckaroos, wooden rocking horses for toddlers, on a 30% markdown sale for $72.09. What was the original price before they were marked down?
*Friday, September 5, 2014 at 9:14pm*

**Business Math**

The Mills Lunch Shop prepares fresh take-out entrees each day. On Tuesday, 40 baked chicken dinners were prepared at a cost of $3.20 each. A 20% spoilage rate is anticipated. Mills Lunch Shop sells dinners at an 80% markup based on cost. They decided to offer a $1.00 off ...
*Friday, September 5, 2014 at 9:08pm*

**Business Math**

Dylan's Bicycle Shop offers a new bicycle on sale for $259.92 after a 10% markdown. What was the cost of the bicycle to Dylan if the markup was 30% based on the cost? Round
*Friday, September 5, 2014 at 8:59pm*

**math**

write the simplest ratio for each: 18:21, 14:35, 10:12, 24:32, 21:24
*Friday, September 5, 2014 at 8:56pm*

**Business Math**

In October, a hardware store purchased snow shovels for $8 each. The original markup was 50% based on the selling price. In December the store had a sale and marked down the shovels by 20%. By January 1, the sale was over and the shovels were marked up to 15%. In March, the ...
*Friday, September 5, 2014 at 8:50pm*

**Business Math**

The Sweet Candy Shop buys 600 pounds of chocolate covered strawberries at $5.59 per pound. If a 10% spoilage rate is anticipated, at what price per pound should the strawberries be sold in order to achieve a 60% markup based on cost?
*Friday, September 5, 2014 at 8:38pm*

**Business Math**

Beacon electronics advertised a portable TV set on sale for $272.49 after a 35% markdown from the original price. What was the original price of the TV set? Round to nearest cent
*Friday, September 5, 2014 at 8:22pm*

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