Thursday

October 23, 2014

October 23, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**Quantitative Reasoning (math)**

Your weight on the moon is relative to your weight on Earth. Neil Armstrong weighed 360 lbs. in his moon gear while on Earth, but on the moon he only weighed 60 lbs. What is the ratio of the Earth weight to the moon weight? How much would you weigh (approximately) on the moon?
*Thursday, September 11, 2014 at 12:14am*

**Math**

Roberta is planning to buy a new car the different options she have is 1) Regular transmission or heavy duty towing transmission 2) two-door, four-door, or five-door 3)color: sleek silver, midnight black, upward grey, bold blue, or steady red In how many different ways can she...
*Thursday, September 11, 2014 at 12:12am*

**8th grade math **

Maggie claims that to make the measure of an angle greater, you just extend the rays. How do you respond?
*Thursday, September 11, 2014 at 12:08am*

**8th grade math**

Henry claims that a line segment has a finite number of points because it has two endpoints. How do you respond?
*Thursday, September 11, 2014 at 12:01am*

**Math**

if it takes 40 seconds to cut a 10-inch by 10 inch square cake into 2 inch by 2 inch pieces, how many seconds will it take to cut a 12 inch by 12 inch square cake into 2 inch by 2 inch pieces
*Wednesday, September 10, 2014 at 11:34pm*

** Math**

helen purchased three books and received a 20% discount. She will pay $10 for shipping. Write an expression that can be used to represent the total amount paid for the three books and the shipping cost.
*Wednesday, September 10, 2014 at 11:20pm*

**math**

Mega Mart collects sales tax equals to 1/16 of the retail price. Is the amount of tax collected proportional to the cost of an item before tax is added
*Wednesday, September 10, 2014 at 10:50pm*

**Math Proof**

Let S be a non-empty subset of the real numbers that is bounded below. Define −S by −S = {− x | x ∈S }. Prove: (i) −S is bounded above. (ii) sup(−S) = − inf S .
*Wednesday, September 10, 2014 at 10:45pm*

**math**

Sales tax is 1/16. What is the tax when retail price is 16.
*Wednesday, September 10, 2014 at 10:37pm*

**Quantitative Reasoning (math)**

One out of every five people who buys ice cream buy vanilla ice cream. If a store sells 125 ice cream cones in one day, about how many will be vanilla? I know how to solve the proportion once I set it up, but I cant figure out how to set it up
*Wednesday, September 10, 2014 at 10:33pm*

**Math**

2/3 of miss lina's class were boys. there were between 2 and 14 boys. One day, twin girls joined the class. Now 3/5 of the students are boys. how many students are in miss lina's class now?
*Wednesday, September 10, 2014 at 10:12pm*

**Math**

13-(8-2)=13-8- There is an empty box after the equation . Pls help I don't understand!
*Wednesday, September 10, 2014 at 10:02pm*

**Math**

Clue 1: When you divide me by 5, the remainder is 4. Clue 2: I have two digits. Both digits are odd. Clue 3: The sum of my digits is 10.
*Wednesday, September 10, 2014 at 9:16pm*

**Physics-bobpursley Follow Up**

Initial Question: A rubber ball is dropped onto a ramp that is tilted at 20 degrees. A bounding ball obeys the "law of reflection," which says that the ball leaves the surface at the same angle it approached the surface. The ball's next bounce is 3.0 m to the ...
*Wednesday, September 10, 2014 at 8:56pm*

**math**

The price of a computer fell 20% this year. If the computer now costs $550, how much did it cost last year
*Wednesday, September 10, 2014 at 8:53pm*

**math**

A = P + Prt; P (business)
*Wednesday, September 10, 2014 at 8:52pm*

**math**

v=1/3ni2h
*Wednesday, September 10, 2014 at 8:52pm*

**math**

The length of a rectangle is 3 feet less than twice the width of the rectangle. If the perimeter of the rectangle is 144 feet, find the width and the length
*Wednesday, September 10, 2014 at 8:44pm*

**math**

A new machine that deposits cement for a road requires 13 hours to complete a one-half mile section of road. An older machine requires 15 hours to pave the same amount of road. After depositing cement for 2 hours, the new machine develops a mechanical problem and quits working...
*Wednesday, September 10, 2014 at 8:43pm*

**math**

A jeweler wants to make a silver alloy to be used to make necklaces. How many ounces of a silver alloy that costs $3.50 per ounce should be mixed with one that costs $7.00 per ounce to make a new 30-ounce alloy that costs $6.30 per ounce
*Wednesday, September 10, 2014 at 8:42pm*

**Math**

The sum of 13 different positive whole numbers is 92. What are these numbers?
*Wednesday, September 10, 2014 at 8:31pm*

**math**

What is the worlds most musical fish? I have fractions .
*Wednesday, September 10, 2014 at 8:28pm*

**math**

9x27+2×31-28=n
*Wednesday, September 10, 2014 at 8:19pm*

**Math**

A skateboarder descends on a ramp from 172 feet to 67 feet in 15 seconds.What is average change in height per second?
*Wednesday, September 10, 2014 at 8:10pm*

**math**

The perimeter of a square piece of land is twice the perimeter of an equilateral triangle. (an equilateral triangle has three equal sides.) If one side of the square is 45 feet, find the length of the sides of the triangle. 2x + 3 = 45 2 x + 3 -3 = 45 + 2x 2x + 45 ___ __ = x 2...
*Wednesday, September 10, 2014 at 8:06pm*

**Math**

Julie can make 5 shirts in 8 days. How many days would it take her to make 15 shirts?
*Wednesday, September 10, 2014 at 7:56pm*

**Math**

For the set of ordered pairs, state the domain, range, and determine whether or not the relation represents a function. (9,9), (7,4), (1,2), (2,6), (5,0) Domain: 9,7,1,2,5 Range: 9, r, 2, 6, 0 It is a function because no x value is repeated
*Wednesday, September 10, 2014 at 7:49pm*

**math**

You are running a fuel economy study. one of the cars you find is blue. it can travel 35 1/2 miles on 1 1/4 of gasoline. Another car is red. It can travel 27 1/5 on 4/5 gallon of gasoline. What is the unit rate for miles per gallon for the blue car? what is for the red?
*Wednesday, September 10, 2014 at 7:37pm*

**Math**

How do you know which operation to choose when solving a real life problem? Can anyone help me explain this?
*Wednesday, September 10, 2014 at 7:36pm*

**math**

If bacterium divides every 20 minutes. How many will there be in a day?
*Wednesday, September 10, 2014 at 7:35pm*

**Math**

Explain how you know if a number can be divided by 10 evenly.
*Wednesday, September 10, 2014 at 7:33pm*

**Math**

How do you know which operation to choose when solving a real life problem?
*Wednesday, September 10, 2014 at 7:28pm*

**math**

convert 2 meters to centimeters 2×______=_____cm
*Wednesday, September 10, 2014 at 7:17pm*

**math**

What is the percentage of 17 out of 22
*Wednesday, September 10, 2014 at 7:07pm*

**Math **

Is this right? 0 > -2
*Wednesday, September 10, 2014 at 6:56pm*

**Math**

Enter the sum of numbers as a product of their GCF. 27 + 36 The sum of the numbers as a product of their GCF is ____ * (____ +_____).
*Wednesday, September 10, 2014 at 6:48pm*

**math**

Enter the sum of numbers as a product of their GCF. 27 + 36 The sum of the numbers as a product of their GCF is ____ * (____ +_____).
*Wednesday, September 10, 2014 at 6:33pm*

**math**

Juanita runs every seventh day and swims every fifth day. If Juanita runs and swims today, in how many days will she run and swim again on the same day? She will run and swim again in ____ days.
*Wednesday, September 10, 2014 at 6:18pm*

**math**

writing to explain explain why it is important to line up decimal numbers by their place value when you add or subtract them.
*Wednesday, September 10, 2014 at 6:11pm*

**math**

A recipe that makes 7 servings calls for cup of apple juice and cup of cranberry juice. How many cups of juice are there per serving?
*Wednesday, September 10, 2014 at 6:05pm*

**math**

Juanita runs every seventh day and swims every fifth day. If Juanita runs and swims today, in how many days will she run and swim again on the same day?
*Wednesday, September 10, 2014 at 6:00pm*

**algebra**

two students are playing a math game. the object of the game is to make the least possible number by arranging the given digits inside absolute value bars on a card. In the first round, each player will use the digits 3, 5, and 7 to fill in the card. One student arranges the ...
*Wednesday, September 10, 2014 at 5:46pm*

**college math**

if $110 is invested for one year at 13% simple interest, how much interest is earned?
*Wednesday, September 10, 2014 at 4:47pm*

**business math**

On May 1, 2004 the Jones Company received a bank statement that showed a $2,950 balance. Mr. Jones showed a $4,010 checking account balance. The bank did not return check No. 124 for $1080 and check No. 138 for $720. A $3,200 deposit made on April 30 was in transit. The bank ...
*Wednesday, September 10, 2014 at 4:29pm*

**Math Problem (please help)**

Use Hooke's Law for springs, which states that the distance a spring is stretched (or compressed) varies directly as the force on the spring. A force of 265 newtons stretches a spring 0.15 meter (see figure). (a) How far will a force of 120 newtons stretch the spring? (...
*Wednesday, September 10, 2014 at 4:28pm*

**math**

Find the unit rate. Run 400 meters in 1 min 32 s. Have no idea, please help.
*Wednesday, September 10, 2014 at 4:24pm*

**Math**

Which of the following shows a stragety to use to find 4 x 275? A- (4 x 300) + (4 x 25) B- (4 x 300) - (4 x 25) C- (4 x 275) - 100 D- (4 x 200) + 75
*Wednesday, September 10, 2014 at 3:42pm*

**math**

the sum of the ages of Sylvana’s two daughters is 60. If the older daughter is three years older than the younger daughter, and the younger daughter’s age is y, write an equation that could be used to solve this problem.
*Wednesday, September 10, 2014 at 3:14pm*

**Math: Multiplication**

Find all the factores of the product. Products: 30 45 19 40 36 22 4 26 49 32 23
*Wednesday, September 10, 2014 at 2:41pm*

**math**

if it takes 8 inches of ribbon to make a bow how many bows can be made from 3ft of ribbon will any ribbon be left over if so how much
*Wednesday, September 10, 2014 at 2:40pm*

**Math - full question**

Julia purchased a new sofa for $1300 and made a 15% down payment and financed the rest over 12 months. The store charged 11% interest on the amount financed. Find the down payment $ Find the amount financed: $ Find the interest paid: $ Find the monthly payment $
*Wednesday, September 10, 2014 at 2:03pm*

**math**

Mariano is standing at the top of a hill when he kicks a soccer ball into the air. The height of the hill is h feet, and the ball is kicked with an initial velocity of v feet per second. The height of the ball above the bottom of the hill after t seconds is given by the ...
*Wednesday, September 10, 2014 at 1:17pm*

**Math**

Solve for triangle ABC which have angle A =25.25, angle B =60.51 and a =3.82.Find c
*Wednesday, September 10, 2014 at 1:02pm*

**math**

solving equation (b-c)x² + (c-a)x + (a-b) = 0 folling roots are obtained
*Wednesday, September 10, 2014 at 12:15pm*

**math**

(please solve step by step) solving equation (6x+2)/4 + (2x²-1)/(2x²+2) = (10x-1)/4x we got roots as
*Wednesday, September 10, 2014 at 12:12pm*

**math**

the width of a rectangle is two thirds its length. if the perimeter is 180 meters find the rectangle.
*Wednesday, September 10, 2014 at 11:40am*

**math 12**

$identical\:squares\:are\:cut\:from\:each\:corner\:of\:a\:rectangular\:piece\:of\:cardboard,\:7\:cm\:by\:10\:cm.\:The\:sides\:are\:then\:folded\:up\:to\:make\:a\:box\:with\:an\:open\:top.\:If\:the\:volume\:of\:the\:box\:is\:25\:cubic\:centi&#...
*Wednesday, September 10, 2014 at 11:37am*

**Math**

Proportion - If a 30-foot tree cast an 18-foot shadow, find the length of the shadow cast by a 24-foot tree.
*Wednesday, September 10, 2014 at 11:15am*

**Math**

Write a word phrase for each algebraic expression. 14.1 - w z/8 - 9
*Wednesday, September 10, 2014 at 10:43am*

**math**

A gardener wants his garden to have a geometrical shape.he decides on the following rules for building the flower beds.1)They must all be rectangular. 2)The perimeter and area must be the same.How many different flower beds can the gardener make 1)if one of the side is 3 unit ...
*Wednesday, September 10, 2014 at 10:17am*

**Math**

Compare the numbers in each exercise using an inequality symbol. 5 2/3, square root 29
*Wednesday, September 10, 2014 at 10:00am*

**Math**

Write a word phrase for each algebraic expression. 14.1 - w and z/8 - 9
*Wednesday, September 10, 2014 at 9:42am*

**math**

What is the factor of x^2+8x+8 ? Thank you ! :)
*Wednesday, September 10, 2014 at 8:30am*

**math**

What is the factor of x^2+8x+8. thanks...
*Wednesday, September 10, 2014 at 8:08am*

**math**

Two cars x and y travelling side by side are subjected to constant retardations 1/2m/s and 1/6m/s.After passing a point A,they come to rest 300m before and 150m beyond a second point B.Find common velocity at A and distance AB
*Wednesday, September 10, 2014 at 7:54am*

**Math**

A yacht is moving at 10kmh in a south easterly direction and encounters a 3kmh current from the north. Find the actual speed and direction of the yacht.
*Wednesday, September 10, 2014 at 5:27am*

**Math**

if the temperature is -40 degrees fahrenheit and increases 20 degrees fahrenheit after an hour. what is the current temperature?
*Wednesday, September 10, 2014 at 5:26am*

**math**

The long-distance plan for an in-home phone costs 303.23 per month plus 2.18 per min for long-distance calls both within your state or between states, with no limit to the number of minutes of call time.
*Wednesday, September 10, 2014 at 5:04am*

**math**

rice seedlings will be planted to a 20 m x 25 m area at 20 cm x 20 cm spacing, with 2 seedlings per hill. if the area is a rectangle having 25 meter long rows what will be the resulting plant population density?
*Wednesday, September 10, 2014 at 4:47am*

**math**

Jack has $55.00 that's ten more than 1/3 of what Jill has how much does Jill have
*Wednesday, September 10, 2014 at 1:32am*

**math**

Steve, Lindsay, and Christine are the lead singers in a band. They will sing 18 songs. Lindsay will sing 8 songs. Christine will sing 6 fewer songs than Stevie. How many songs will stevie sing.
*Wednesday, September 10, 2014 at 1:27am*

**math**

Steve, Lindsay, and Christine are the lead singers in a band. They will sing 18 songs. Lindsay will sing 8 songs. Christine will sing 6 fewer songs than Stevie. How many songs will stevie sing.
*Wednesday, September 10, 2014 at 1:25am*

**Math**

(2x^3y^2z)-2/(3x^4yz^-2)^-2
*Wednesday, September 10, 2014 at 12:23am*

**math**

*This is orders of magnitude* 1)So, I have to estimate 16,700,000,000,000,000 the product of a single digit of 10. - 2 x 10^16 - 2 x 10^15 *my answer* - 1 x 10^16 - 1 x 10^15 2)0.00000394 estimated as the product of a single digit. ____ x 10____ *fill in the blanks* *my answer...
*Wednesday, September 10, 2014 at 12:14am*

**Math Problem (please help)**

State sales tax is based on retail price. An item that sells for $115.99 has a sales tax of $8.12. Find a mathematical model that gives the amount of sales tax y in terms of the retail price x. (Round the coefficient to two decimal places.) y = Use the model to find the sales ...
*Wednesday, September 10, 2014 at 12:00am*

**Math**

Simplify the expression 5(x+10)+x A. 6x+15 B. 5x+15 C. 6x+50 D. 4x-50 Is the answer B?
*Tuesday, September 9, 2014 at 11:46pm*

**Math!!**

Raymond buys bottles of water at $2.10 each and a large pizza at $12.99. The total cost was $21.39. How many bottles of water b did he buy? A. 2.10b+12.99=21.39; 4 bottles B. 2.10+12.99b=21.39; 4 bottles C. 2.10c= 21.39+12.99; 6 bottles D. 21.39-2.10b=12.99;16 My answer is A ...
*Tuesday, September 9, 2014 at 11:32pm*

**Math!**

Suppose you are driving to visit a friend in another state. You are driving 55 miles per hour. You must drive 440 miles total. If you have already driven 275 miles, how long will it take you to reach your destination? Use h to represent the number of hours it will take to ...
*Tuesday, September 9, 2014 at 11:23pm*

**Math**

This isn't very urgent but can you please break this down to me step by step? I really don't understand. I get that I'm supposed to use the order of operations but I still get lost. 2[4(9-7)+1]/3
*Tuesday, September 9, 2014 at 11:15pm*

**Math!**

9a-b-2a-10b simplify this expression A. -7a+11b B. 11a+9b C. -11a-9b D. 7a-11b Is the answer D?
*Tuesday, September 9, 2014 at 11:12pm*

**Math Problem (please help)**

The simple interest on an investment is directly proportional to the amount of the investment. By investing $4250 in a certain bond issue, you obtained an interest payment of $106.25 after 1 year. Find a mathematical model that gives the interest I for this bond issue after 1 ...
*Tuesday, September 9, 2014 at 10:49pm*

**Math - Finding the Equation**

If.... f(x) = x + 2 and g(x) = −x^2 + 2x − 3, determine - ( f ∘ g)(−2) - a formula for (g∘f)(x) My answer for ( f ∘ g)(−2) = -9 But I don't know how to get the formula for (g∘f)(x). Any help would be great.
*Tuesday, September 9, 2014 at 10:46pm*

**Math**

Write the value of the underlined digit. 37,295,810 Underline number(7) Answer: 7,000,000 496,021,795 Underline number (first 9) Answer: 90,000,000 638, 912,004 Underline number(6) Answer: 600,000,000 385,526 Underline number (second 5) Answer: 500 Write each number in word ...
*Tuesday, September 9, 2014 at 10:41pm*

**Business Math**

Portion is found by _____ the rate times the base
*Tuesday, September 9, 2014 at 9:58pm*

**7th grade math**

how do I solve for this: If 5/6 is divided by a certain fraction, a/b, the product is 1/4. What is the fraction a/b? Ans: (5/6)/(a/b) = 1/4 = do i need to divide both sides by 1/4 to get (5/6)/(1/4) = (5/6)x(4/1) = 20/6 = need to somehow get a/b by itself not sure what to do...
*Tuesday, September 9, 2014 at 9:56pm*

**Math Problem (please help)**

Find the zeros (if any) of the rational function. (If there are no zeros, enter NONE.) g(x) = (x^3-64)/(x^2+2) need help solving
*Tuesday, September 9, 2014 at 9:51pm*

**Chemistry**

Can you help me understand how to review the math definition... what "percentage" means. I need to know what the total mass of the mixture of 42 grams of apples and 96 grams of oranges. ANd what is the percentage of mass the apples are? Thank you.
*Tuesday, September 9, 2014 at 9:48pm*

**Math**

An auditorium has 30 rows of seats. It has 20 seats on the first row, 24 seats on the second row, 28 seats on the third row, and so on. 1. How many seats are there in the 20th row? 2. How many seats are there in the whole auditorium?
*Tuesday, September 9, 2014 at 9:41pm*

**Math**

1. If one wishes to accumulate a Php 30,000-fund in 5 years, how much should he deposit now at 18% compounded quarterly? 2. If a bank offers a rate of 4.5% compounded semiannually, how much should you deposit to accumulate Php 50,000 in 15 years 3. Suppose that a particular ...
*Tuesday, September 9, 2014 at 9:37pm*

**math help**

the sum of three consecutive odd integers is 435. What is the largest of the three integers??how do I solve this problem?? Please help
*Tuesday, September 9, 2014 at 9:26pm*

**math**

8 + (7)with directions please thats alll algebra
*Tuesday, September 9, 2014 at 9:20pm*

**Business Math**

Base is found by __________ the portion by the rate
*Tuesday, September 9, 2014 at 9:19pm*

**Math**

The Recycling Department of a fast food chain is planning to have a Christmas Tree Making Contest in preparation of the upcoming Holiday Season. Part of the contest mechanics is to collect soft drinks tin cans and build a Christmas Tree out of the tin cans. If you want to join...
*Tuesday, September 9, 2014 at 9:14pm*

**Math**

If a compact body falls vertically 16 ft. during the 1st second, 48 ft. during the 2nd second, and 80 ft. during the third second, how far will it fall during the 7th second? During the first 7 seconds?
*Tuesday, September 9, 2014 at 9:13pm*

**Math**

A swim club charges a one-time registration fee of $30 plus $18 per month to maintain the membership. What is the total charge for a membership for t years? A. 18(t + 30) B. t(12 x 18) + 30 C. t x 18 + 30 D. $126
*Tuesday, September 9, 2014 at 9:07pm*

**8th grade math**

mr.nelson sold 147 bags of popcorn and 216 of water in 3 days. at this rate how many more bottles of water than bags of popcorn will mr. nelson sell in 5 days?
*Tuesday, September 9, 2014 at 8:36pm*

**8th grade math**

at a restaurant 42 people had breakfast on saturday morning. 1/7 of the people ate eggs only. 2/3 of people ate both eggs and pancakes. the remaining people ate pancakes only. what is the fraction representing the number of people who ate pancakes only.
*Tuesday, September 9, 2014 at 8:30pm*

**math**

Russell planted a flowerbedthat is 1.6 square meters. Jackie planted a flower bed that is 16 tenths square meter. Draw a quick picture to model the two pictures
*Tuesday, September 9, 2014 at 8:10pm*

**Math Problem (please help)**

Write the logarithmic equation in exponential form. ln e = 1 How do I do that?
*Tuesday, September 9, 2014 at 8:09pm*

**Math**

Sarah has 10 stuffed animals. Explain two different ways she can group the stuffed animals so each group has the same number and no stuffed animals are left over.
*Tuesday, September 9, 2014 at 8:04pm*

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