Tuesday

November 25, 2014

November 25, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**math**

How long will it take a car 3m long travelling at 100km/h to overtake a truck 10m long travelling at 50km/h, if the car is 10m behind the truck
*Wednesday, October 15, 2014 at 2:52am*

**Math**

Which number will have the same result, when rounded to the nearest ten or hundred? Is it 97, 118 and 5, 179 or 5,091?
*Wednesday, October 15, 2014 at 1:08am*

**math**

What is the perimeter of a rectangle that has a area of 35 in to the square root of 2
*Wednesday, October 15, 2014 at 12:14am*

**6th grade math**

a diver's elevation is -30 feet relative to sea level. she dives down 12 feet. what is her elevation after the dive? a. 12 feet b. 18 feet c. -30 feet d. -42 feet
*Wednesday, October 15, 2014 at 12:03am*

**math college algebra**

lynne is 24 years old. lynne is twice as old as jean was when lynne is as old as jean is now. how old is jean ?
*Wednesday, October 15, 2014 at 12:00am*

**math**

If jen can paint a room in 7 hours and jen and keith can paint the room in 4 hours. how long will it take keith to paint the room alone?
*Tuesday, October 14, 2014 at 10:50pm*

**math**

Find the general form of the equation of the plane passing through the point and perpendicular to the specified vector. [Be sure to reduce the coefficients in your answer to lowest terms by dividing out any common factor.] (8, 6, 3), n = i – 6j + k
*Tuesday, October 14, 2014 at 10:13pm*

**Math Check**

Are my answers right? 1.) Find the remainder (x^3+2x^2+3x+4)/(x+2) My answer: 2 2.) Find the remainder (x-1)/(x^4-3x^2+2x-1) My answer: -1
*Tuesday, October 14, 2014 at 9:39pm*

**Math (Ms.Sue)**

Marco ran from his house 2.67 miles to a county park. He then ran the 1.5 mile cross country loop at the park and back home. How many miles did Marco run altogether? I added and got 4.17 miles Is that correct
*Tuesday, October 14, 2014 at 9:24pm*

**math**

Peter spent 2/5 of his pocket money on clothes and had #45 left.what was his pockey money
*Tuesday, October 14, 2014 at 9:23pm*

**Math**

The ratio of games the Falcons won to the games they lost for the 2013 football season was 7:5. What is the ratio of games won to the total number of games played? What kind of ratio did you describe?
*Tuesday, October 14, 2014 at 9:14pm*

**math**

sketch and label all possible rectangles with a perimeter of 30 cm and sides whose lengths are whole numbers help me tell my son what to do I don't understand
*Tuesday, October 14, 2014 at 8:25pm*

**Math**

without doing the computation, explain why or why not 19.7 is a reasonable value for the expression 122.14 divided by 6.2
*Tuesday, October 14, 2014 at 8:18pm*

**math**

semir, sarah and sung so decided to raise money for a local homeless shelter by working in a local deli. the deli agreed to donate to the shelter a portion of the profits from each meal the three sold. semir sold 3 times as many meals as sarah. sung sold 2 more meals than ...
*Tuesday, October 14, 2014 at 7:58pm*

**Math**

Mrs. Daniel pays $324 for a handbag and 3 pairs of shoes. The handbag cost half as much as the 3 pairs of shoes combined. Find the cost of the hand bag.
*Tuesday, October 14, 2014 at 7:56pm*

**Math**

Can you think of situations in which it might be preferable to compute with decimals rather than fractions or to compute with fractions rather than decimals, give examples of each situation and tell why you think that number form is preferable
*Tuesday, October 14, 2014 at 7:55pm*

**Math**

If each of the 3,121 members in a community drank 267 glasses of water in a year, about how many glasses of water would be consumed by that community in a year? Estimate by rounding each term to the greatest place.
*Tuesday, October 14, 2014 at 7:55pm*

**Math**

Gary is 61 1/8 inches tall. his friends Gino and Gilbert are 56 1/2 inches tall and 63 1/8 inches tall, what is the average heigh of the three friends
*Tuesday, October 14, 2014 at 7:30pm*

**Math**

There are four brown shoes and 10 black shoes on the floor. your puppy cares away two shoes and puts one shoe in the trashcan and one in the laundry basket. a. What is the probability that there will be a black shoe in the trash and a brown shoe in the laundry basket?
*Tuesday, October 14, 2014 at 7:30pm*

**math**

how do i work this problem 8x25x23 using subtraction in mental math
*Tuesday, October 14, 2014 at 7:20pm*

**math**

the height of a ball thrown vertically upward from a rooftop is modelled by h(t)=-5t^2 +20t+50. Determine the maximum height of the ball.
*Tuesday, October 14, 2014 at 7:04pm*

**math**

These problems I really don't understand and really need serious help :) 1.What the product of (5.1 x 10^3)x (3.2 x 10^3)?(Please express your answer in scientific notation) 16.32 x 10^6 .... 1.632 x 10^7 16.32 x 10^9 1.632 x 10^10 2.What is the product of (7.28 x 10^-2)x(...
*Tuesday, October 14, 2014 at 6:54pm*

**math**

These problems I really don't understand and really need serious help :) 1.What the product of (5.1 x 10^3)x (3.2 x 10^3)?(Please express your answer in scientific notation) 16.32 x 10^6 1.632 x 10^7 16.32 x 10^9 1.632 x 10^10 2.What is the product of (7.28 x 10^-2)x(9.1 x...
*Tuesday, October 14, 2014 at 6:44pm*

**math**

in recent year, the world production of wheat was about 5.2 *10^8 metric tons. Canada produced 1/25 of this wheat. about how much wheat did Canada produce?
*Tuesday, October 14, 2014 at 6:34pm*

**math **

what is the quotient (2.965 x 10 ^7) divided by (5 x 10^3)?
*Tuesday, October 14, 2014 at 6:32pm*

**math**

alyssa has saved 26 quarters from washing cars. how many cents does alyssa have?
*Tuesday, October 14, 2014 at 6:08pm*

**Math**

How to solve 2^-1/5^2 ?
*Tuesday, October 14, 2014 at 5:53pm*

**math**

suppose 8 out of every 20 students are absent from school less than 5 days a year. Predict how many students would be absent from school less than 5 days a year out of 40,000 students.
*Tuesday, October 14, 2014 at 5:15pm*

**math**

5 less than three times the number of chipmunks. We got 3x-5 but weren't sure.
*Tuesday, October 14, 2014 at 5:10pm*

**science/math**

you have the same volume of two different liquids. what are two ways you can tell which has greater density? Answer: by comparing its Weight and mass
*Tuesday, October 14, 2014 at 4:46pm*

**Math**

Is this ratio in simplest form 14:12?
*Tuesday, October 14, 2014 at 4:22pm*

**Math**

The ratio of games the Falcons won to the games they lost for the 2013 football season was 7:5. What is the ratio of games won to the total number of games played? What kind of ratio did you describe?
*Tuesday, October 14, 2014 at 4:08pm*

**math**

1/2(x-2)<3/4(1-3x)<-2
*Tuesday, October 14, 2014 at 3:39pm*

**math**

1/2(x-2)<3/4(1-3x)<-2
*Tuesday, October 14, 2014 at 3:37pm*

**math**

1/2(x-2)<3/4(1-3x)<-2
*Tuesday, October 14, 2014 at 3:37pm*

**math**

Jane is organizing her 24 dolls into equal sized piles. What is the possible number of dolls that could be in each pile?
*Tuesday, October 14, 2014 at 2:59pm*

**Math**

Suppose sinA = 12/13 with 90º≤A≤180º. Suppose also that sinB = -7/25 with -90º≤B≤0º. Find cos(A - B).
*Tuesday, October 14, 2014 at 2:39pm*

**Math**

Suppose sinA = 12/13 with 90º≤A≤180º. Suppose also that sinB = -7/25 with -90º≤B≤0º. Find cos(A + B).
*Tuesday, October 14, 2014 at 2:21pm*

**Physical Science- Math skills**

Rachel is asked to calculate the density of a liquid. She correctly measures the mass of the liquid to be 14 grams, but she incorrectly measures the volume of the liquid to be 10 mL. The actual volume of the liquid is 9 mL. If Rachel uses the following equation to calculate ...
*Tuesday, October 14, 2014 at 2:18pm*

**Math**

Select all the true statements about identities. A) You may use proven identities to prove other identities. B) An identity is true only for restricted values of the variables. C) You can prove an identity by graphing the side to the left of the equal sign, graphing the side ...
*Tuesday, October 14, 2014 at 2:18pm*

**Math**

Suppose sinA = 12/13 with 90º≤A≤180º. Suppose also that sinB = -7/25 with -90º≤B≤0º. Find cos(A - B).
*Tuesday, October 14, 2014 at 2:17pm*

**Stasticstics/math**

A teacher wants to compare the mean geology scores of two different classes. She is testing the null hypothesis that there is no difference in the population mean scores of the two classes. The difference of the sample means is 51.4. If the standard deviation of the ...
*Tuesday, October 14, 2014 at 1:53pm*

**Foundations and Pre-Calculus Math 10**

Find the radius of a cone with a height of 3m and a volume of 30m cubed. So far I have 90m cubed / 3m = pi(r^)3m/3m. Then I get stuck. Help! I'm really bad at math. ):
*Tuesday, October 14, 2014 at 1:30pm*

**Math**

Hi I really need help. I don't know even how to figure these two questions out so if you could help me, please. Is (–4, 10) a solution to the equation 10 – 5x = y? Explain your answer. Describe the pattern in the table using an equation. x|y 1|15 2|25 3|35 4|45 ...
*Tuesday, October 14, 2014 at 1:17pm*

**math**

In a suspension bridge, the shape of the suspension cables is parabolic. The bridge shown in the figure has towers that are 400 m apart, and the lowest point of the suspension cables is 100 m below the top of the towers. Find the equation of the parabolic part of the cables, ...
*Tuesday, October 14, 2014 at 12:24pm*

**Math**

what is 603kg = ? g. I don't get how to do the problem
*Tuesday, October 14, 2014 at 12:17pm*

**Math**

A sphere has a volume of 200m3 . What is the volume of the smallest cube that this sphere would fit inside of? (Hint: try drawing a diagram of a side or top view of this situation)
*Tuesday, October 14, 2014 at 11:39am*

**Math 116**

If the length of a rectangle is increased by 10% and the width of the rectangle is decreased by 10%, is the area changed? If so, does it increase or decrease and by what percent? Explain your answer.
*Tuesday, October 14, 2014 at 11:32am*

**Math 130**

Can i find the perimeters of the following figures Square Rectangle and Circle
*Tuesday, October 14, 2014 at 10:26am*

**Math **

Larry and Gary are discussing whose garden has the most area to plant flowers. Larry claims that all they have to do is walk around the two gardens to get the perimeter and the one with the greatest perimeter has the greatest area. How would you help these students?
*Tuesday, October 14, 2014 at 10:15am*

**3 grade math**

How can I find the area of an angle?" How do you respond?
*Tuesday, October 14, 2014 at 9:54am*

**Math**

If john makes 60 k a year , how much does he make each month?
*Tuesday, October 14, 2014 at 9:23am*

**Math**

ABCDEF is a regular hexagon. If BA and CD are extended until they intersect, what is the measure of the angle formed?
*Tuesday, October 14, 2014 at 8:55am*

**math prajishaa**

if 10% is vat is charged on an article bought by sandeep for rupees 6930 what is the selling price of the article
*Tuesday, October 14, 2014 at 8:40am*

**math usha kk**

a refrigerator is marked at rupees 14500 if 16%vat is charged find the total amount that she will have to pay to the shopkeeper
*Tuesday, October 14, 2014 at 8:35am*

**math prasad vk**

by selling a saree for rupees 2000 the shopkeeper made a profit of 20% what was the cost price of the saree
*Tuesday, October 14, 2014 at 8:24am*

**math school g**

salman purchased 8 wood panels for rupees 1500 each for transporting them to his shop he had spend rupees 800 he then gave the panels a veneer wich cost him rupees 8000 he sold 4 panels for rupees 3200 each calculate his total profit or loss %
*Tuesday, October 14, 2014 at 8:09am*

**Math**

Are the statements Always, Sometimes or Never. Please explain why. Thanks. 1. An equilateral polygon is regular. 2. The greater the number of sides of a regular polygon, the smaller the measure of any of its exterior angle. 3. The sum of the measures of the interior angles of ...
*Tuesday, October 14, 2014 at 4:08am*

**Math**

1. The measure of an interior angle of a regular polygon is 20 more than thrice the measure of its adjacent exterior angle. Find the number of sides of the polygon and its total number of diagonals. 2. Find the sum and difference between the sum of the measures of the interior...
*Tuesday, October 14, 2014 at 3:34am*

**math**

Determine whether the fractions in each of the following pairs are equal: a: a^2/b and a^2b/b^2 b: 377/400 and 378/401 c: 0/10 and 0/-10 d: a/b and a+1/b+1, where "a" is not equal to "b" or a =/= b
*Tuesday, October 14, 2014 at 3:06am*

**math**

Yoon Ki drove from Phoenix to tucson in 1 1/2 hours. then she drove from tucson to el paso in 4 3/4 hours. the second part of her trip was how many times as long as the first part.
*Tuesday, October 14, 2014 at 2:16am*

**math**

150 men live in a certain town: 85 are married 70 have a cell phone 75 own a car 55 are married and have a cell phone 35 have a cellphone and a car 40 are married and have car 30 are married, have a car and have a cellphone. How many men are single and do not have a car? How ...
*Tuesday, October 14, 2014 at 12:44am*

**Math**

Write a paragraph proof of this theorem: In a plane, if two lines are perpendicular to the same line, then they are parallel to each other
*Tuesday, October 14, 2014 at 12:36am*

**math**

I need to know how to find a number that makes the statement true so that I can help my daughter. 1/2 < ?/8
*Tuesday, October 14, 2014 at 12:05am*

**math**

compare and contrast: below are two equations. solve each equation and compare the two solutions. choose the statement that is true about each solution. equation #1 2x-3=-17 5x+3=12 A. equation #1 and equation #2 have the same number of solutions B. equation #1 has more ...
*Monday, October 13, 2014 at 11:17pm*

**program planning**

Learning to make candy from a recipe would relate most directly to which two of the 13 activity areas? A. Math and science B. Social studies and science C. Cooking and math D. Social studies and cooking
*Monday, October 13, 2014 at 11:11pm*

**math**

Each time Lucy uses her credit card she earns points from the credit card company. For every 100 dollars she spends she earns 50 points. Choose the equation that accurately represents the relationship between the two variables: m = amount of money spent, and p = total number ...
*Monday, October 13, 2014 at 11:09pm*

**math**

Prove that:(3-4sin^2A) (1-3tan^2A)=(3-tan^2A)(4cos^2A-3)
*Monday, October 13, 2014 at 11:06pm*

**Math**

In a polynomial like 5x^5 + 4x^2 + 2, is 2 counted as a term?
*Monday, October 13, 2014 at 10:38pm*

**Math**

Write a paragraph proof of this theorem: In a plane, if two lines are perpendicular to the same line, then they are parallel to each other.
*Monday, October 13, 2014 at 9:48pm*

**Math**

In a circuit, the voltage, V, is given by the formula V = IZ, where I is the current and Z is the impedance. Both the current and impedance are represented by complex numbers. Find the voltage if current is 3 + 2i and impedance is 4 - i.
*Monday, October 13, 2014 at 9:36pm*

**Math**

luc has 1 h of homework to do. He has assignments to complete for social studies and math, and a science test. he sepends 2/5 of the time completing the social studies assignment, and 1/3 of the time on math. How much time does Luc have left to study for the science test?
*Monday, October 13, 2014 at 9:27pm*

**Math**

According to the 2010 census data , the population of Texas was about 2.5*10^7 people. The land area of Texas is about 2.6*10^5 m^2. Divide the average number of people per square mile in 2010. A. 0.96*10^2 B. 9.6*10^1 C. 0.96*10^35 D. 9.6*10^12 Is the answer A?
*Monday, October 13, 2014 at 9:16pm*

**Math**

Find the Synthetic Division: (10x^4-50x^3-800)/(x-6)
*Monday, October 13, 2014 at 9:16pm*

**math**

Find two positive decimals a and b that make the following statement true. Then find two positive decimals a and b that make the statement false. If a < 1 and b < 1, then a ÷ b < 1.
*Monday, October 13, 2014 at 9:15pm*

**Math**

Which is irrational? A. 0.117117117... B. 0.8596873205... C. 0.812812812812... D. 0.605605605... Is the answer B?
*Monday, October 13, 2014 at 8:58pm*

**math physics**

A meteorite is a solid composed of stone and/or metal material from outer space that passes through the atmosphere and hits the earth’s surface. Find the kinetic energy of a meteorite with mass 250 kg that hits the earth at 25 km/s. Given: m=250kg v=2.5E4m/s <<< ...
*Monday, October 13, 2014 at 8:54pm*

**math physics**

A meteorite is a solid composed of stone and/or metal material from outer space that passes through the atmosphere and hits the earth’s surface. Find the kinetic energy of a meteorite with mass 250 kg that hits the earth at 25 km/s. Given: m=250kg v=2.5E4m/s <<< ...
*Monday, October 13, 2014 at 8:54pm*

**math physics**

A meteorite is a solid composed of stone and/or metal material from outer space that passes through the atmosphere and hits the earth’s surface. Find the kinetic energy of a meteorite with mass 250 kg that hits the earth at 25 km/s. Given: m=250kg v=2.5E4m/s <<< ...
*Monday, October 13, 2014 at 8:54pm*

**Math**

Harold bought two loaves of raisin bread to share with his friends. If there are 12 people total, including Harold, how much bread does each person have? A. 0.06 B. 0.16 THE 6 keeps going on C. 0.25 D. 0.3 And the 3 keeps going on Is the answer C?
*Monday, October 13, 2014 at 8:50pm*

**math**

there are 40 students at Bali high who plays stringed instruments. of these, 1/4 play viola, 1/5 play cello, and the rest play violin. how many students play violin?
*Monday, October 13, 2014 at 8:47pm*

**Math**

One nanometer is about 0.00000003937 of an inch. What is this number in scientific notation? A. 3.937*10^-8 B. 3.937*10^8 C. 39.37*10^-7 D. 39.37*10^7 Is the answer A? Thanks
*Monday, October 13, 2014 at 8:41pm*

**Math. Word problem**

Strawberries are on sale for $2.30 per pound. Noah bought a bag of strawberries for $8.05. How many pounds of strawberries did Noah buy?
*Monday, October 13, 2014 at 8:31pm*

**Math Proof**

Let {X_n} be a sequence of real numbers that is bounded above by M and such that X_n-->x Prove that x<=M
*Monday, October 13, 2014 at 8:30pm*

**Math**

If there is 1/2 if a pizza and Jonas wants only 1/3 of it, how much of the pizza will he eat? A. 1/5 B. 2/5 C. 1/6 D. 2/6 Is the answer B? Thanks
*Monday, October 13, 2014 at 8:27pm*

**Math**

The king's ship sank with 8 gold bars aboard. The king paid captain nemo 4/5 of one bar for finding the gold. The captain gave 1/2 of his gold to charity. What fraction of a bar went to charity?
*Monday, October 13, 2014 at 8:26pm*

**Math**

What is 0.32 written as a fraction in simplest form/ A. 32/100 B. 8/25 C. 100/32 D. 16/25 Is the answer B? Thanks
*Monday, October 13, 2014 at 8:21pm*

**math**

t has been discovered in a certain state that the relationship between the number of snow shovels demanded varies linearly with its price. When the price per item was $ 38 ,2200 items were demanded; When the price was $ 49 , 2125 items were demanded. Determine the price per ...
*Monday, October 13, 2014 at 8:05pm*

**Math**

Divide. Write the answer in simplest form. 8 1/6 divided by 2 1/24. I got 4 5/6 is this right? If so what's the simplest form.
*Monday, October 13, 2014 at 7:56pm*

**Math**

What percent o the student population are girls? Please show work!
*Monday, October 13, 2014 at 7:37pm*

**math**

equivalent expression -3(x-7)
*Monday, October 13, 2014 at 7:26pm*

**math**

total salary is $6650000 per year total gross area it service is 3.5*10000000 squar feet the unit cost, in dollars per square foot,for this group is
*Monday, October 13, 2014 at 7:23pm*

**math**

whats is 0.5l/s=gal/h
*Monday, October 13, 2014 at 7:22pm*

**Math**

Xander says that the place value sections method, the expanded notation method, and the algebraic notation method of multiplying a one-digit number by a two-digit number are pretty much the same. Do you agree or disagree? Explain.
*Monday, October 13, 2014 at 7:06pm*

**math**

The function y_p(t) =ln(4 + 2 t), t > -4/2, is a particular solution to the differential equation y''+8y=g(t). Find g(t).
*Monday, October 13, 2014 at 6:42pm*

**Math**

Where should the decimal be placed in the product of the following problem? (1.632) (0.81)=132192
*Monday, October 13, 2014 at 6:40pm*

**Math**

Find the Synthetic Division: (10x^4-50x^3-800)/(x-6)
*Monday, October 13, 2014 at 6:39pm*

**Math**

The equation -4x+y=0 relates to the number of pages in a photo album y to the number of picture sin the album x. Tell whether the relationship is a direct variation.Explain
*Monday, October 13, 2014 at 6:34pm*

**Math**

Write a real-world context for the following ratio: Five to three
*Monday, October 13, 2014 at 6:33pm*

**math**

7x4-4 devided 2=26
*Monday, October 13, 2014 at 6:26pm*

Pages: <<Prev | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | **21** | 22 | 23 | 24 | 25 | 26 | 27 | Next>>

Post a New Question | Current Questions