Thursday

October 2, 2014

October 2, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**Math**

consider the polynomial (x-a)(x-b)and the real number line Identify the points on the line where the polynomial is zero. In each of the three subintervals of the line, write the sign of each factor and the sign of the product.For which values does the polynomial possibly ...
*Thursday, September 11, 2014 at 6:24pm*

**Math**

i am a 4 digit odd number none of the numbers are 0-9 the tens digit is twice the ones digit the hundreds digit is twice the tens digit and the thousands digit is one less than the hundreds digit
*Thursday, September 11, 2014 at 6:21pm*

**math**

R=10 d=20 c=d||
*Thursday, September 11, 2014 at 5:59pm*

**7th grade math**

A large carton of juice holds 12 cups. How many 3/4 cup servings does the carton hold? I'm not sure how to solve it at all.
*Thursday, September 11, 2014 at 5:25pm*

**7th grade math**

Carrie has a 10ft long plank of wood. She want's to cut three pieces that are each 2 2/3 feet long from the plank. how long will the plank be after she cuts off the three pieces?
*Thursday, September 11, 2014 at 5:22pm*

**math**

he number of block has 9 in the ones place. the number in the hundreds place is one more than the number in the tens place, those two numbers equal 11. how many blocks are there?
*Thursday, September 11, 2014 at 4:33pm*

**math **

the ratio relationship betweeen 19:7 and 7 to 26
*Thursday, September 11, 2014 at 4:30pm*

**Math**

What is the sum of all the positive numbers smaller than 100,000 where all digits can only be 1 or 0.
*Thursday, September 11, 2014 at 4:05pm*

**Math Multiplication **

What are all the multiplication facts for 60,36,48,20,25,40,50,30,100,15,18,and 12?
*Thursday, September 11, 2014 at 3:59pm*

**math**

sum of 3 number is equal 39 , the second number is half of third number ,and the first number less than third number by 1,the result must be 6 degit ?
*Thursday, September 11, 2014 at 3:54pm*

**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
*Thursday, September 11, 2014 at 2:34pm*

**math**

Write in an integer that represents your height on the teeter totter that is relative to the balance point height: you are 8 inches below the balance point height or you are 15 inches the balance point height---your height is the opposite or your friend is 12 inches above the ...
*Thursday, September 11, 2014 at 1:30pm*

**math**

A plane leaves Chicago headed for Los Angeles at 520 mph. One hour later, a second plane leaves Los Angeles headed for Chicago at 620 mph. If the air route from Chicago to Los Angeles is 1800 miles, how long will it take (after the first plane takes off) for the first plane to...
*Thursday, September 11, 2014 at 1:28pm*

**math**

A motorboat left a harbor and traveled to an island at an average rate of 11 knots. The average speed on the return trip was 10 knots. If the total trip took 4.2 hours, how far is the harbor from the island?
*Thursday, September 11, 2014 at 1:28pm*

**math**

Running at an average rate of 4 meters per second, a sprinter ran to the end of a track. The sprinter then jogged back to the starting point at an average rate of 2 meters per second. The total time for the sprint and the jog back was 2 minutes 6 seconds. Find the length of ...
*Thursday, September 11, 2014 at 1:27pm*

**math**

An investment adviser invested $14,000 in two accounts. One investment earned 4% annual simple interest, and the other investment earned 2.5% annual simple interest. The amount of interest earned for 1 year was $458. How much was invested in each account
*Thursday, September 11, 2014 at 1:27pm*

**Math, Physics**

A soccer ball is kicked from the ground at an angle of è = 46 degrees with respect to the horizontal. The hang time of the ball is tm = 1.9 s. What is the total horizontal distance traveled by the ball in meters?
*Thursday, September 11, 2014 at 12:49pm*

**math**

A gaint wheel in a fair had a diameter of 250 feet.what's the distance a person travels in one complete revolution?
*Thursday, September 11, 2014 at 12:22pm*

**Math**

∑(x+y) c. ∑(x+∑(y)) d. ∑x+ ∑y e. ∑(x)+ ∑(y)* what do each of these mean? what's the differences?
*Thursday, September 11, 2014 at 12:02pm*

**math**

v=1/3tt^2h
*Thursday, September 11, 2014 at 8:43am*

**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...
*Thursday, September 11, 2014 at 8:17am*

**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?
*Thursday, September 11, 2014 at 8:17am*

**math**

A plane leaves Chicago headed for Los Angeles at 520 mph. One hour later, a second plane leaves Los Angeles headed for Chicago at 620 mph. If the air route from Chicago to Los Angeles is 1800 miles, how long will it take (after the first plane takes off) for the first plane to...
*Thursday, September 11, 2014 at 8:16am*

**math**

Running at an average rate of 4 meters per second, a sprinter ran to the end of a track. The sprinter then jogged back to the starting point at an average rate of 2 meters per second. The total time for the sprint and the jog back was 2 minutes 6 seconds. Find the length of ...
*Thursday, September 11, 2014 at 8:16am*

**math**

An investment adviser invested $14,000 in two accounts. One investment earned 4% annual simple interest, and the other investment earned 2.5% annual simple interest. The amount of interest earned for 1 year was $458. How much was invested in each account?
*Thursday, September 11, 2014 at 8:15am*

**Math**

Diagonal of rhombus are 24 and . Find its area and perimeter:/help me fast
*Thursday, September 11, 2014 at 8:13am*

**math**

A motorboat left a harbor and traveled to an island at an average rate of 11 knots. The average speed on the return trip was 10 knots. If the total trip took 4.2 hours, how far is the harbor from the island?
*Thursday, September 11, 2014 at 8:03am*

**math**

Please solve these using the quadratic formula: 1. 3x^2-4(x-2)=0 2.a^2+2(a++5)=0 3.x^2-3(2x+3)=0 Thank you ^____^
*Thursday, September 11, 2014 at 7:06am*

**math**

What will be the answer of 4x(x-1)+5=0 when i'll use quadratic formula to solve it. Thank you ! ^___^
*Thursday, September 11, 2014 at 6:01am*

**math**

solving equation 7√(x/1-x) + 8√(1-x/x) = 15 following roots are obtained
*Thursday, September 11, 2014 at 4:03am*

**math**

solving equation 7(√x/1-x) + 8(√1-x/x) = 15 following roots are obtained
*Thursday, September 11, 2014 at 3:59am*

**Math: pre calculus**

a barn is 150 feet long and 75 feet wide. the owner has 240 ft of fencing and wants to construct two adjacent outdoor pens of identical size along the long side of the barn using the barn as one side of each pen. the owner wants the pens as large as possible. what are the ...
*Thursday, September 11, 2014 at 1:53am*

**MATH**

A HUMMINGBIRD BEATS IT WINGS 53X SEC HOW MANY TIMES DOES THE HUMMINGBIRD BEATS IN 5 SEC
*Thursday, September 11, 2014 at 1:09am*

**8th Grade math**

a student says there can only be 360 different rays emanating from a point since there are only 360 degrees in a circle. Is this true? Why or Why not?
*Thursday, September 11, 2014 at 12:14am*

**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*

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