Monday

October 20, 2014

October 20, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**Math**

I forgot how to do inequalities with a rational function. The question I have is: ((3x-2)/(x-1))<1
*Tuesday, September 30, 2014 at 10:24pm*

**math**

the ratio of the number of people who own a smartphone than a flip phone, how many people own each type of phone?
*Tuesday, September 30, 2014 at 10:20pm*

**Math (LCM)**

A music store gives every 20th customer a $5 gift card. every 50th customer gets a $10 gift card. Which customer will be the first to receive both types of gift cards? Use prime factorizations.
*Tuesday, September 30, 2014 at 10:04pm*

**math**

a man has 35 models. he has 4 times as many airplane models as he does helicopter models. how many airplane models does he have?
*Tuesday, September 30, 2014 at 10:01pm*

**Math (LCM)**

A music store gives every 20th customer a $5 gift card. every 59th customer gets a $10 gift card. Which customer will be the first to receive both types of gift cards? Use prime factorizations.
*Tuesday, September 30, 2014 at 9:56pm*

**Math .**

3(4x - 2) = 2(6x - 3) one solution infinite solutions ** no solution a+5 = 1/5(5a + 25) one solution infinite solutions no solution ** 3(4x - 3) - 7x = 5x - 9 one solution infinite solutions no solution 8+2(8x - 6) (choose all that apply) 2(4x + 7) 9x – 10 16x – 4...
*Tuesday, September 30, 2014 at 9:50pm*

**math**

Kevin is a quarterback on the football team. He completed 36 passes during the season. His second-string replacement mark completed 2/9 as many passes as kevin. how many passes did Mark complete?
*Tuesday, September 30, 2014 at 9:48pm*

**math**

mary put new tiles on her kitchen floor. the floor measures 6 feet long by 5 feet wide. she used 10 tiles to cover the entire floor. each tile was 3 feet long. write an equation using the variable x to model this situation. what does x represent in the equation?
*Tuesday, September 30, 2014 at 9:30pm*

**math**

what are the missing numbers between 21 and 63
*Tuesday, September 30, 2014 at 9:15pm*

**Math**

How to plot (0,-2)
*Tuesday, September 30, 2014 at 9:13pm*

**Math**

Suppose an experiment involves rolling a fair die 720 times. Find the mean of the number of times a number less than 2 is rolled
*Tuesday, September 30, 2014 at 9:11pm*

**math**

1. Finding the Counterfeit Coin. You have 5 coins. You know that one of them is counterfeit and weighs less than the others. Suppose also that you have a balance scale. Is there a strategy for finding the counterfeit coin using the balance scale only twice? If yes, what is the...
*Tuesday, September 30, 2014 at 8:46pm*

**Math**

A woman has a total of $10,000 to invest. She invests part of the money in an account that pays 6% per year and the rest in an account that pays 9% per year. If the interest earned in the first year is $750, how much did she invest in each account?
*Tuesday, September 30, 2014 at 8:36pm*

**Math**

Travis has a total of $6,000 invested in two accounts. The total amount of interest he earns from the accounts in the first year is $420. If one account pays 6% per year and the other pays 9% per year, how much did he invest in each account?
*Tuesday, September 30, 2014 at 8:36pm*

**Math**

A woman owns a small, cash-only business in a state that requires her to charge 6% sales tax on each item she sells. At the beginning of the day, she has $290 in the cash register. At the end of the day, she has $1200 in the register. How much money should she send to the ...
*Tuesday, September 30, 2014 at 8:35pm*

**Math**

Every item in the Just a Dollar store is priced at $1.00. When Mary Jo opens the store, there is $127.00 in the cash register. When she counts the money in the cash register at the end of the day, the total is $1,055.80. If the sales tax rate is 8%, how many items were sold ...
*Tuesday, September 30, 2014 at 8:35pm*

**Math**

The third angle in an isosceles triangle is 116° more than twice as large as each of the two base angles. Find the measure of each angle.
*Tuesday, September 30, 2014 at 8:34pm*

**7th grade math**

find the sum 7/20 + (-4.8) + (-4/5) +4.9 im cluless
*Tuesday, September 30, 2014 at 8:08pm*

**math**

A room measures 14 feet by 20. feet. How many tiles would it take to cover the deck if the square tiles measure 8.0 inches to the side?
*Tuesday, September 30, 2014 at 7:56pm*

**8th grade math**

At 2pm the temperature is 22 degrees, by 4am it is negative 7 degrees. We think the answer in the change of temperature is 29 degrees am I right?
*Tuesday, September 30, 2014 at 7:44pm*

**Math**

4(2x + 3) = 2(3x - 4) one solution *my answer* infinite solutions no solution
*Tuesday, September 30, 2014 at 7:08pm*

**Math Help **

Which pair(s) of functions are inverses? There may be more than one correct answer. a.) f(x) = x - 12, g(x) = x + 12 b.) f(x) = 3x, g(x) = 1/3x c.) f(x) = 4x, g(x) = -4x d.) f(x) = 2x + 1, g(x) = 2x - 1 My answer: B & C
*Tuesday, September 30, 2014 at 7:04pm*

**Math**

1.) What is the inverse of the relation (3, -1), (2. 5), (-4, -4)? 2.) What is the inverse of the relation (1, -3), (3, 5), (6, -2)?
*Tuesday, September 30, 2014 at 7:03pm*

**Math **

What is 145 over 16 in simplest form? 29/2 * 5/8 = 145/16 = ?? PLEASE HELP MMEEEE DX
*Tuesday, September 30, 2014 at 7:02pm*

**Math Pre-Calc/Trig**

If 11 square meters of tile are available to make a rectangle whose width must be 6 meters less than its length, what would be the dimensions of the rectangle?
*Tuesday, September 30, 2014 at 7:01pm*

**8th grade Math**

At 2pm the temperature is 22 degrees, by 4am it is negative 7 degrees. We think the answer in the change of temperature is 22 degrees am I right?
*Tuesday, September 30, 2014 at 6:51pm*

**Math**

This is a bonus question. If the modes of a problem are13 and15 and the mean and the median are 15 how do you come up with the other numbers
*Tuesday, September 30, 2014 at 6:17pm*

**math**

how much fuel will all of your familys vehicles hold if they are completely full Explain
*Tuesday, September 30, 2014 at 6:04pm*

**Math z-scores**

find the z-scores for which 92% of the distribution's area lies between -z and z
*Tuesday, September 30, 2014 at 6:01pm*

**Math (What Do I Do)**

Choose the best graph for the given situation. Copy the graph and label the axes with the variables give in parenthesis (the first variable goes on the y axis and the second variable on the x axis). 1.Karina walked from home to the library, did some homework, then walked back...
*Tuesday, September 30, 2014 at 5:59pm*

**Math**

4(2x - 3) - 4x (answer all that apply) 4x – 12 *my answer* 3x – 4 *my answer* 3(2x – 6) 4(x – 5)
*Tuesday, September 30, 2014 at 5:45pm*

**4th grade math**

Danielle received $32 for her birthday. Three years ago, she received 1/4 as much. How much did Danielle receive three years ago?
*Tuesday, September 30, 2014 at 5:28pm*

**math**

(3r-5)(x+3)
*Tuesday, September 30, 2014 at 5:22pm*

**math**

Most Americans throw away about 1365 pounds of trash each year. Is it reasonable to estimate that Americans throw away over 10000 pounds of trash in 5 years? Explain.
*Tuesday, September 30, 2014 at 4:47pm*

**Math Questions**

1.) What is the inverse of the relation (3, -1), (2. 5), (-4, -4)? 2.) What is the inverse of the relation (1, -3), (3, 5), (6, -2)?
*Tuesday, September 30, 2014 at 4:42pm*

**math models**

The Sears Tower in Chicago is 1454 feet high. Sketch and find the angle of elevation from a point 750 feet from the base to the top of the tower. Relate your answer to the nearest tenth. a. 62.7º b. 27.3º c. 31.1º d. 58.9º
*Tuesday, September 30, 2014 at 4:37pm*

**4-- math questions**

1. Simplify this expression: 6d + 11 – 3d + 4. 3d 17d + 7d 3d + 15 9d + 15 2. Name the coefficients in this expression: 7a + 3b + 9. 7 and 3 7, 3, and 9 7a and 3b 7a, 3b, and 9 3. Name the like terms in this expression: 4c + 12 + 3c + 2b. 4c, 3c, and 2b 4c and 2b 4c and ...
*Tuesday, September 30, 2014 at 4:20pm*

**Math**

2. What is the selling price of a $12,543 boat if a $758 discount is given? A. $11,758 B. $12,785 C. $11,785 D. $12,758 I think it is C.
*Tuesday, September 30, 2014 at 3:48pm*

**Math**

Subtract the fractions and write your answer in lowest terms. 4/5-3/8 A. 1/40 B. 1 7/4 C. 7/10 D. 17/40
*Tuesday, September 30, 2014 at 3:23pm*

**math...**

Add the fractions and write your answer in lowest terms. 2/5+1/9 A. 1/15 B. 23/45 C. 3/14 D.19/45 B? Thanks
*Tuesday, September 30, 2014 at 3:17pm*

**Math**

Find the LCD of 3/5 and 1/6. A. 5 B. 6 C. 11 D. 30 I choose D am I right? Thanks
*Tuesday, September 30, 2014 at 3:08pm*

**Math**

I wanted to double check that I am correct on the work area and answers please. 1.Given f(x)=x+2 and g(x)= 3x-4. Find (f+g). Work: (x+2) + (3x-4) Answer: 4x-2 2.Given f(x)=x+2 and g(x)=3x-4. Find (f*g). Work: (x+2)(3x-4) Answer: 3x² +2x-8 3.Given f(x)=x+2 and g(x)=3x-4. ...
*Tuesday, September 30, 2014 at 1:50pm*

**Math **

4(2x + 3) = 2(3x - 4) one solution infinite solutions * my answer* no solution 6 - a = 1/3(9a - 18) one solution * my answer* infinite solutions no solution 3(4x - 3) - 7x = 5x - 9 one solution infinite solutions *my answer* no solution 4(2x - 3) - 4x (answer all that apply) ...
*Tuesday, September 30, 2014 at 1:50pm*

**MATH HELP PLEASE**

1. What is the product of (5.1 × 10^3) • (3.2 × 10^3)? (1 point) 16.32 × 10^6 1.632 × 10^7 16.32 × 10^9 1.632 × 10^10 2. What is the product of (7.28 × 10^-2) • (9.1 × 10^-2)? (1 point) 6.6248 × 10^-3 66.248 &...
*Tuesday, September 30, 2014 at 1:35pm*

**Math**

Determine if the conditional statement is true. If a shape is a square, then it will have four sides. True?
*Tuesday, September 30, 2014 at 1:34pm*

**math**

83 3rd graders 115 4th graders 150th graders all the 5th graders will be on one side and all the 4th graders will be on the other side the 3rd graders will be split up so that the two sides will have equal number of student how many 4th graders ?how many 3rd graders will be ...
*Tuesday, September 30, 2014 at 12:08pm*

**Math**

1.)which two sq roots are used to estimate 5? a.)1 & 2 b.)2 & 4 ****** c.)4 & 9 d.)9 & 16 2.)which two sq roots are used to estimate 43? a.)25 & 36 b.)36 & 49***** c.)49 & 64 d.)25 & 64 3.)an estimate for the sq root of -66 is? a.)-6 b.)-7 c.)-8***** d.)-9 4.)an estimate for ...
*Tuesday, September 30, 2014 at 11:40am*

**Math Gr.12**

h=-4.9t^2+29.4t what is the rocket's maximum height? (think vertex)
*Tuesday, September 30, 2014 at 9:39am*

**College Prep Math 4**

The formula is S=2 times the square root of 5 times L. S equals the estimated speed of a car and L equals the length of the skid marks prior to the accident. 100=2(square root of 5x) I have no idea how to solve this
*Tuesday, September 30, 2014 at 9:24am*

**Math Gr 12**

A model rocket is shot straight into the air. Its height in meters a "t" seconds is given by h=-4.9^2+29.4t. a) What is the rocket's initial height? c)When does the rocket reach the ground?
*Tuesday, September 30, 2014 at 9:02am*

**math- pre calc/trig**

Find the length of each side of a square if the diagonal is 7(square root 2)? How do I solve or set up this problem?
*Tuesday, September 30, 2014 at 8:05am*

**math exponential function**

if 450,ooo is invested at 12% compounded semiannually .When will the amount of investment be 477,000?
*Tuesday, September 30, 2014 at 4:11am*

**math**

P is the product ,n is the consecutive term of geometric progression, s is tje sum of their reciprocal then(S/R)n is equal a) p b) p2 c) p3 d) pn
*Tuesday, September 30, 2014 at 2:47am*

**Math**

Is -2 an even number?
*Tuesday, September 30, 2014 at 1:07am*

**Math **

I wanted to double check my work. I am trying to find the domain: 1. f(x)= x+5 Answer: No Domain 2. f(x) = 1 X+5 Work: x+5≠0 X=-5 Answer: (-∞,-5) ᴜ (-5,∞) 3. f(x)= √x+2 Work: x+2 ≥ 0 x ≥ -2 Answer: [-2,∞)
*Tuesday, September 30, 2014 at 12:35am*

**Math**

A resultant vector has a magnitude of 25m?s with an angle of 20 degrees counterclockwise of east. draw the resultant on a coordinate plane, Find the x-component. Find the y-component
*Tuesday, September 30, 2014 at 12:14am*

**math**

The greatest recorded temperature ranges in the world are around the "cold pole" in Siberia. Temperatures in Verkhoyansk have varied from -94 degrees Fahrenheit to 98 degrees Fahrenheit. What is the difference between the high and low temperatures in Verkhoyansk?
*Monday, September 29, 2014 at 11:41pm*

**Math**

is -3.444,-3.4222,-|3.4|,-3 3/7 from least to greatest correct? if not plz esplane
*Monday, September 29, 2014 at 10:37pm*

**Math**

36+81=____(____+____)
*Monday, September 29, 2014 at 10:21pm*

**math**

Mr snider is tiling a floor .The floor is 16 tiles long and 5 toles wide.How many tiles are in the border section?
*Monday, September 29, 2014 at 10:03pm*

**Math**

Posted by NEED HELP on Monday, September 29, 2014 at 9:12pm. Have three problems and I'm really confused how to solve/simplify 1. 4/3+square root of 5 2. -4/-4+4square root of 2 3. 1/1+ square root of 2
*Monday, September 29, 2014 at 9:57pm*

**Math**

Factor Completely 8y^5+12y^3+4y
*Monday, September 29, 2014 at 9:52pm*

**Math**

Everyday Ms. Twinkle walks around a park near her house. The park is in the shape of rectangle 2 mi long and 1 3/10 mi wide. How far does she walk?
*Monday, September 29, 2014 at 9:33pm*

**math**

Please help, my mom and I are having a difference of opinion. The question is crackers come in packages of 24. Cheese slices come in packages of 18. You want one cheese slice for each cracker. What is the least number of crackers and cheese slices you can buy so nothing is ...
*Monday, September 29, 2014 at 9:29pm*

**Math**

Given the following prime factors, determine the original number as well as all of its factors. 2*3*5*7 I know that 2*3*5*7 is 210 but I don't know what to do next.
*Monday, September 29, 2014 at 9:23pm*

**Math**

Factor Completely 8y^5+12y^3+4y
*Monday, September 29, 2014 at 8:56pm*

**math**

Kristen and Christopher were playing a board game. They used a spinner with 4 spaces labeled 1, 2, 3, and 4. Each player was allowed 3 consecutive spins. They could move pieces on a board game only if the total of the 3 spins equaled 5. How many possible combinations could ...
*Monday, September 29, 2014 at 8:23pm*

**math**

Forensic specialists can estimate the height of a deceased person from the lengths of the person's bones. These lengths are substituted into mathematical inequalities. For instance, an inequality that relates the height h, in centimeters, of an adult female and the length ...
*Monday, September 29, 2014 at 8:11pm*

**math**

6units to the right and 5units up
*Monday, September 29, 2014 at 8:05pm*

**Math**

How to add fractions Adding fractions is simple look at the example below. 4 2 - + - = 4+2=6 and you keep the 8 8 denominator the same so the answer is 6 - 8
*Monday, September 29, 2014 at 7:51pm*

**Math**

Solve the following e^-x (square root((3e^2x) - 5/4)) = e^x
*Monday, September 29, 2014 at 7:50pm*

**math**

Represent 30 degree increase in temperature as an integer. Would that be +30?
*Monday, September 29, 2014 at 7:47pm*

**Math**

Explain how to find the greatest common factor of three numbers. Grade 6 GO MATH BOOK
*Monday, September 29, 2014 at 7:46pm*

**7th grade math**

Classify properties of operations. 1. (-4-3n) * -8 Ans: distributive 2. (6+4)+8=6+(4+8) Ans: associative 3. (1-7n) * 5 Ans: distributive
*Monday, September 29, 2014 at 7:40pm*

**math**

write a ratio in 3 ways, comparing the first quantity to the second. A week has 5 school days and 2 weekends. Second question about 1 in 4 people swims at least 6 times each year.
*Monday, September 29, 2014 at 7:37pm*

**math**

how can you simplify a ratio
*Monday, September 29, 2014 at 7:30pm*

**Math**

Pat and Kelly went hiking in the mountains. They started at 9,100 ft. They climbed 1,200 ft the first day, descended 900 ft the second day, and climbed 1,000 ft the third day. On the fourth day they descended 800 ft. What was the average altitude at which they hiked?
*Monday, September 29, 2014 at 7:08pm*

**Math**

the temperature dropped 18 degrees F between 6 am and 6 pm. during the night the temperature fell another 8 degree F. at 6 am the temperature started rising. It rose 1degree F the first hour, 2 degree F the second hour, and 4 degree the third hour. The temperature rose another...
*Monday, September 29, 2014 at 6:54pm*

**Math**

One table at a bake sale has 75 oatmeal cookies.Another table has 60 lemon cupcakes. Which table allows for more rectangular arrangements when all the cookies and cupcakes are displayed? Explain.
*Monday, September 29, 2014 at 6:53pm*

**MATH HELP**

arthur wants to model 758 using the fewest blocks possible. how many tens should he use? A. 8 B.5 C.7 D.4
*Monday, September 29, 2014 at 6:38pm*

**Math**

The coach of a baseball team separates the players into groups for drills. Each group has the same number of players. Is the total number of players on baseball team prime or composite? Explain.
*Monday, September 29, 2014 at 6:29pm*

**math **

which is the number that has a tens digit that is 8 more than the units digit. but zero is not one of the digits
*Monday, September 29, 2014 at 6:17pm*

**math**

for what values of k in y=3x+k with the curve y=-x^2-3x+6 intersect the line at 2 points
*Monday, September 29, 2014 at 5:59pm*

**math squares**

how many squares with sides that are 6 inches long are needed to cover a square with a side length of 30 inches without overlapping
*Monday, September 29, 2014 at 5:55pm*

**Math**

What is the volume of a rectangular prism if the base area is 56 inches, height 6 inches?
*Monday, September 29, 2014 at 5:40pm*

**Math (Trig)**

Rewrite the following expression in terms of tan3x: (sin2x + sin4x)/(cos2x + cos4x)
*Monday, September 29, 2014 at 5:32pm*

**math**

Imelda, susan and clara are driving go carts around a track. Imelda takes 14 min, susan takes 9 min and clara takes 10 min to drive one lap. suppose all three of them start together at a point and drive at their same speeds. after how many minutes would all three meet again?
*Monday, September 29, 2014 at 5:28pm*

**Math**

Jeremy bought a plank of wood 2 2/3 yards long. He divided the plank into 3 equal pieces. How long is each of Jeremy's planks?
*Monday, September 29, 2014 at 5:22pm*

**Math**

Pat purchases 2.5 pounds of jelly beans at $.89 per pound. How much did Pat pay for his jelly beans in all?
*Monday, September 29, 2014 at 5:03pm*

**Math**

Wanda meets her friend every 8 days. She meets her friend Audrey every 6 days. One day she meets both Jackie and Audrey. In how many days will she next meet Jackie and Audrey?
*Monday, September 29, 2014 at 4:59pm*

**Math**

the temperature dropped 18 degrees F between 6 am and 6 pm. during the night the temperature fell another 8 degree F. at 6 am the temperature started rising. It rose 1degree F the first hour, 2 degree F the second hour, and 4 degree the third hour. The temperature rose another...
*Monday, September 29, 2014 at 4:59pm*

**Math **

Jada has 1/4 of a pizza left. She is going to split the leftovers equally with 6 of her friends. What fraction of the whole pizza will each piece be?
*Monday, September 29, 2014 at 4:53pm*

**math problem solving**

arthur wants to model 758 using the fewest blocks possible. how many tens should he use? A. 8 B.5 C.7 D.4
*Monday, September 29, 2014 at 4:42pm*

**Math**

It took 6.5 gallons of gas to fill the tank of the family car. If the tank is .25 full when they arrived at the gas station, how much gas does the tank hold.
*Monday, September 29, 2014 at 4:27pm*

**Math**

Write a two column proof. Given: 7y = 8x - 14; y = 6 Prove: x = 7
*Monday, September 29, 2014 at 3:48pm*

**math**

find two numbers the exact answer is between 3*567
*Monday, September 29, 2014 at 3:46pm*

**Math**

solve: cot(2theta/3)= -sqrt3 Please help, I don't know how to start and how to set it up.
*Monday, September 29, 2014 at 3:30pm*

**Math help algebra**

You have a gift card for your favorite clothing store for the amount of $60. You have found a shirt you want to buy that costs $15. If you don't want to spend more than the amount of the gift card, which of the following inequalities could be used to determine the amount ...
*Monday, September 29, 2014 at 2:07pm*

**math**

I am a multiple of 7 and 3, my units digit is half my tens digit, what number am I?
*Monday, September 29, 2014 at 12:51pm*

**DISCRETE MATH**

How many different strings can be made from the letters in STATISTICS, using all the letters
*Monday, September 29, 2014 at 12:44pm*

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