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January 30, 2015

January 30, 2015

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**math**

there are markers every 1000 feet along the side of a road. While driving, Mai passes marker number 15 at 10:05 and marker number 39 at 10:11. find mai's average speed feet per minute. use dimensional analysis to check the reasonableness of your answer.
*Tuesday, January 6, 2015 at 6:23pm*

**math**

if a wall in a 1/4 in. scale drawing is 6 in. tall, how tall is the actual wall? please help
*Tuesday, January 6, 2015 at 6:21pm*

**Math**

You can buy one 10 pack of AAA batteries for $5.49 and get one battery free, or you can buy two 4 packs for $2.98. Which has the lower unit price per battery? please help and show me the steps, thank you
*Tuesday, January 6, 2015 at 6:19pm*

**math**

14 loins to 10 tigers
*Tuesday, January 6, 2015 at 6:00pm*

**math**

Problem- Ms.Kelly puts more than 5 apples in each bag. Write an inequality to represent the number of apples in a bag. My questions- would it be n>5?
*Tuesday, January 6, 2015 at 5:39pm*

**Math**

A school is printing t-shirts for students. They have 2 different prices. Company A says they will print 16 t-shirts for $40. Company B will print 84 t-shirts for $140. Which is a better price? Please prove your answer.
*Tuesday, January 6, 2015 at 5:24pm*

**Math**

7d-4 (d+8) = -8 ??? When I did this equation I got 8=d I know I did something wrong. I just dont know any other way to do it. I did basic equation-solving rules and got his answer. Help?
*Tuesday, January 6, 2015 at 5:22pm*

**math**

This table shows the numbers of students in different classes that are in the math club. Students in math club Boys / Girls Mrs.Smith 3 / 4 Ms.Jones 4 / 6 Mr.Brown 3 / 4 a. What fraction of the students in the math club are boys from Mrs. Smith’s class? b. What fraction ...
*Tuesday, January 6, 2015 at 5:08pm*

**Math**

What are the characteristics of a right angle? This is my answer: It is 90 degrees, it is also perpendicular line, it is also half a straight line of 180 degrees. Is this correct?
*Tuesday, January 6, 2015 at 5:02pm*

**math**

What is the area of the rectangle with the width of 6x^2 and the length of 12x^3? hint: x=5 I got 6*5^2=900; 12*5^3=216,000 for a total of 216,900 is that correct? If it is wrong can you show me how to do them? THANKS
*Tuesday, January 6, 2015 at 5:01pm*

**math**

Denise calculated the missing side length of one of these triangles using the Pythagorean Theorem. Which triangle is it
*Tuesday, January 6, 2015 at 4:58pm*

**Math**

The cubes show how many students rode the bus to school today How many students rode the bus to school? A 14 B 15 C 16 D 17 Three rows of five blocks and 1 row with only two blocks
*Tuesday, January 6, 2015 at 4:49pm*

**Math**

Juliette bought a number of tickets to see a rock band. Each ticket costs $45. Write an algebraic expression that represents the total cost of tickets.
*Tuesday, January 6, 2015 at 4:47pm*

**Math**

Tom has 5/6 pounds of raisins. He wants to make 10 snack bags for his class. How many pounds of raisins will each class member get?
*Tuesday, January 6, 2015 at 4:44pm*

**Math**

The cubes show how many students rode the bus to school today How many students rode the bus to school
*Tuesday, January 6, 2015 at 4:33pm*

**Math**

A punch recipe says to mix 4 cups pineapple juice, 8 cups orange juice, and 12 cups seltzer in order to make 18 servings of punch. A) How many cups of each pineapple juice do you need to make 108 cups of punch? I would appreciate it if you can show me how to do this problem
*Tuesday, January 6, 2015 at 4:32pm*

**math**

Tyler is thinking of a number that is divisible by 2 and 3. By which of the following numbers must Tyler's number also be divisible? 6? 8? 9? 12?
*Tuesday, January 6, 2015 at 4:08pm*

**math-algebra**

How do you solve the following problems: What is the area of a square with the length of a side equaling 3a^5? I got (3a^5)(3a^5)=9a^10 is that correct?? What is the area of the rectangle with the width of 6x^2 and the length of 12x^3? I got 6*5^2=900; 12*5^3=216,000 for a ...
*Tuesday, January 6, 2015 at 3:51pm*

**Math**

((2x)/(x-1)) - (9/(x-2)) Is the answer (2x^2 - 13x + 9)/(x^2 - 3x + 2), or can it be simplified further? I got an answer to this question before, but it seems like they did it with 9x instead of 9.
*Tuesday, January 6, 2015 at 2:52pm*

**Math**

4. Your employer has 600 business cards printed for you, and you give away 280 of them. To the nearest hundredth, what percent of the cards is left? A. 18.75% B. 53.33% C. 46.67% D. 21.43% I think it is B or C?
*Tuesday, January 6, 2015 at 2:15pm*

**Math**

In a triathlon, a contestant swims 5 km, cycles 30 km, and then runs 20 km. In general, a contestant runs at an average speed of x, swimsat an average speed of x/5, and cycles at an average speed of 5x, where x is in kilometres per hour. a) Determine an expression for the ...
*Tuesday, January 6, 2015 at 1:52pm*

**Math**

The velocity of an object is given by the formula v=25t-80, where the time is expressed in seconds and the velocity is expressed in feet per second. Find the times when the magnitude of the velocity is equal to 60 ft/s
*Tuesday, January 6, 2015 at 1:50pm*

**Math**

The area of a tennis court can be represented approximately by the function A(x) = 10x2 + 3x - 1, and its length can be represented by l(x) = 5x - 1, where x is a distance, in metres. a) Write and simplify a function, w(x), to represent the width of a tennis court. (2 marks) b...
*Tuesday, January 6, 2015 at 1:34pm*

**math**

17. a restaurant has one type of milk that has 2% fat and another that has 7% fat. How many quarts of each type does the restaurant need to make 40 quarts of a milk mixture that 5% fat (1 point) A. 10 lawns B. 50 lawns C. 100 lawns D. 1,000 lawns
*Tuesday, January 6, 2015 at 1:09pm*

**Math**

A scientist is monitoring the temperature of a holding tank containing fish to be released into a river. In one 12-h period, the highest temperature was 10.4°C and the lowest temperature was 7.6°C. Write an absolute value equation that can be used to report the highest...
*Tuesday, January 6, 2015 at 1:05pm*

**math**

A product that was originally priced at $2,000 had it'd price increased on June 1 by 5%. On December 1 the price was increased by 5% of the new June price. By how many dollars did the price increase on December 1?
*Tuesday, January 6, 2015 at 11:43am*

**math**

i can not find the pattern or a rule... write the next three terms and write a rule to describe the number pattern. 0.57, 0.66, 0.75, 0.84
*Tuesday, January 6, 2015 at 11:17am*

**math**

You purchase 91/2 yards of fabric at $11.00 per yard. There is a 7% sales tax. What is the total cost of fabric?
*Tuesday, January 6, 2015 at 3:55am*

**Math**

((2x)/(x-1)) - (9/(x-2)) Is the answer (2x^2 - 13x + 9)/(x^2 - 3x + 2), or can it be simplified further?
*Tuesday, January 6, 2015 at 1:22am*

**Math**

2/(x + 4) + x/(x - 3) Is the answer (x^2 + 6x - 6)/(x^2 + x - 12), or can this be simplified further?
*Tuesday, January 6, 2015 at 1:07am*

**math**

A factory packs water in half liter, one liter, two liter and five bottles. On a certain day, the factory packed 20 840 bottles and of water .out of these, 8120 were half liter bottles and 3960 were two liters bottles. One liter bottles were 2000 more than the two liter ...
*Tuesday, January 6, 2015 at 12:03am*

**math**

Paint was stored in three containers of 48 liters, 72 liters and 30 liters . The paint in each container was the repacked into smaller containers. The amount of paint in each of s smaller containers was the same. What was the capacity of the largest container used to repack ...
*Tuesday, January 6, 2015 at 12:00am*

**math**

Fifteen painters can paint a number of houses in 12 days .if the number of painters is increased by 5, how many days less would it take the painters working at the same rate to paint the houses?
*Monday, January 5, 2015 at 11:51pm*

**math**

They are five apple slices in each school lunch. If 35 students buy a school lunch, hoe many apple slices are there ? Write an equation for this problem.
*Monday, January 5, 2015 at 11:39pm*

**math**

A woman walks 200 yards west along a straight shoreline and then swims 50 yards north into the ocean on a line that is perpendicular to the shoreline. Using her starting point as the pole and the east direction as the polar axis, give her current position polar coordinates. ...
*Monday, January 5, 2015 at 10:57pm*

**Math**

e(x + 1) + e(x - 4) = ? e(2x - 3) or 2e(2x - 3)?
*Monday, January 5, 2015 at 10:09pm*

**math**

Leah has two same size rectangles divided into the same number of equal parts.One rectangle has 1/3 of the parts shaded,and the other has 2/5 of the parts shaded.What is the least number of parts into which both rectangles could be divided?
*Monday, January 5, 2015 at 9:56pm*

**Math**

Mike started a savings account by depositing $9. Each month, he deposits more money than the month before. At the end of 41 months, he has saved $9,389.00. How much more does he deposit each month?
*Monday, January 5, 2015 at 9:21pm*

**math**

explain how to use mental math to find 700 x 8
*Monday, January 5, 2015 at 8:37pm*

**math**

explain how you can find the quotient of 400/10
*Monday, January 5, 2015 at 8:14pm*

**math**

explain how you can find the quotient of 400:10
*Monday, January 5, 2015 at 8:14pm*

**math**

Kyle says there are exaxtly 4 weeks in February. Is he right? explain
*Monday, January 5, 2015 at 8:09pm*

**math**

Katie picked 7 times as many strawberries as Garrett. Garrett picked 6 quarts of strawberries. How many quarts did Katie pick? Which two multiplication facts can you use to help find the solution ?
*Monday, January 5, 2015 at 8:07pm*

**math**

explain how you could use 5x6=30 to find the product of 6x6
*Monday, January 5, 2015 at 8:00pm*

**math**

write a number sentence with two expressions that equal each other
*Monday, January 5, 2015 at 7:57pm*

**math**

Write word phrase for the expression t/30
*Monday, January 5, 2015 at 7:54pm*

**math**

write an addition problem with 3 addends in which you regroup once to solve.
*Monday, January 5, 2015 at 7:47pm*

**math problem solving **

points p and q are trisection points on segment ab. if aq= 7x+6 and pq= 3x+5 find all possible values for the length of ab
*Monday, January 5, 2015 at 7:43pm*

**math**

write an addition story for two3-digit numbers. write the answer to your story
*Monday, January 5, 2015 at 7:43pm*

**Math**

points p and q are trisection points on segment ab. if aq= 7x+6 and pq= 3x+5 find all possible values for the length of ab?
*Monday, January 5, 2015 at 7:40pm*

**Math**

Show how you can use repeated subtraction to find how many groups of 7 are in 28. Then write the division sentence for the problem.
*Monday, January 5, 2015 at 7:35pm*

**Math**

Q. There is a hot hair ballon festival in System Springs. Seventy two gallons registered to participate,paying $25 each. Five of those who registered didn't show up and we refunded half of their money.mthree additional balloons showed up and paid the registration cost plus...
*Monday, January 5, 2015 at 7:23pm*

**math**

1 1/3 x 2 1/2
*Monday, January 5, 2015 at 7:13pm*

**Math**

((x + 2)/5) + ((3x - 4)/10) Is the answer 5x?
*Monday, January 5, 2015 at 7:08pm*

**Math problem solving**

An octagonal stop sign can be cut from a square sheet of metal, 750mm on a side. To the nearest hundredth, what percentage of the metal square is wasted when the octagon is of maximum size ?
*Monday, January 5, 2015 at 6:51pm*

**math**

Write an addition problem in which, when the addends are rounded to the nearest ten, the sum is 90. Then explain how you use estimation to solve the problem.
*Monday, January 5, 2015 at 6:49pm*

**math**

write an addition problem with 3 addends in which you regroup once to solve
*Monday, January 5, 2015 at 6:42pm*

**math**

write an addition story for two 3-digit numbers. Wrote the answer to your story.
*Monday, January 5, 2015 at 6:41pm*

**Math**

The least common multiple of the two numbers is 60 the difference of the two numbers is 3
*Monday, January 5, 2015 at 6:40pm*

**math**

Angel says the rule for this table i Add 0. Frank says the rule is Subtract 0. Who is correct?
*Monday, January 5, 2015 at 6:39pm*

**math**

Jake says adding 0 does not change a number. Is he correct? Explain
*Monday, January 5, 2015 at 6:36pm*

**math**

tell two different ways Reba could receive her change.
*Monday, January 5, 2015 at 6:32pm*

**math**

Braden and Bialy each bought a kazoo for $0.89. They each paid with a $1.00 bill. Expalin two different ways to show their change.
*Monday, January 5, 2015 at 6:28pm*

**math**

explain how you would use a number line to round 148 to the nearest ten
*Monday, January 5, 2015 at 6:23pm*

**math**

write 66 2/3% as a fraction simplest form what i did: i put 66 2/3 over 100. i dont know how to divide that
*Monday, January 5, 2015 at 6:19pm*

**Math**

A license plate manufacturer is punching plates with pattern: L#L-##LL where L represents a letter and a # represents a digit from 0 through 9.If a letter can be any letter from A to Z except,O, how many different license plates are possible?
*Monday, January 5, 2015 at 6:04pm*

**Math 1**

The number 2 is chosen to begin a ladder diagram to find the prime factorization of 66. What other numbers could have been used to start the ladder diagram for 66? How does starting with a different number change the diagram?
*Monday, January 5, 2015 at 5:55pm*

**Math**

Jim, Juan, Mary, and John are all managers for the same company •Jim always meets the sales goals •Juan exceeded the goal by 15% on Tuesday and 10% on Wednesday. •Mary’s goals for each day of the week are 5% lower than the goals for other managers. •...
*Monday, January 5, 2015 at 5:34pm*

**Math-percents**

A carpenter has a wooden stick that is 84cm long.she cuts off 25% from the end of the stick .then she cuts the remaining stick into 6 equal pieces.what is the length of each piece?
*Monday, January 5, 2015 at 5:04pm*

**MATH!**

Water flows over a dam at a rate of 500 gallons per minute. Write a function rule relating the amount of water (A) that flows over the dam to the number of minutes (M) that have passed. What are the initial value and rate of change?
*Monday, January 5, 2015 at 4:59pm*

**Math**

HELP PLEASE!!! I'm having some trouble with this question on my Maths hw. Any help is appreciated:) Identify the domain and range of the function. y=-0.25x^2 1. domain: (-oo, 0] range: (-oo, oo) 2. domain: (-oo, oo) range: (-oo, 0] 3. domain: (-oo, oo) range: (-oo, 0) 4. ...
*Monday, January 5, 2015 at 4:56pm*

** math**

May has 10 fewer marbles than Albert. May has 5 more marbles than Jenny. Albert gives4 marbles to Jenny. May gives another 6 marbles to Jenny. Jenny has 13 marbles now. Find the number of marbles each of them had at first. Jenny had 3 marbles. May had 8 marbles. Albert had 18 ...
*Monday, January 5, 2015 at 4:49pm*

**Math**

Capacity Homework? I was doing my grade 8 math homework on capacity, and I was told to order the capacity of Vase A, B, and C from least to greatest. Vase C is a hourglass based prism, and I don't know the formula for it. Please help?
*Monday, January 5, 2015 at 4:49pm*

**math**

What symbol did people use to define an angle before the angle symbol was invented ? Thank you
*Monday, January 5, 2015 at 4:45pm*

**math problem solving**

joe has a collection of 35 dvd movies. he receives 8 of them as gifts. joe bought the rest of his movies over 3 yrs. if he bought the same number of movies each year, how many movies did joe buy last year?
*Monday, January 5, 2015 at 3:35pm*

**Math**

Tiffany purchased a $10,000, 13-week Treasury bill that's paying 2.25%. What is the effective rate on this T-bill? A. 2.26% B. 2.2% C. 2.0% D. 2.7%
*Monday, January 5, 2015 at 2:21pm*

**Math**

20+8y-9y-21 which expression is equivalent? A.2(10+4y-7y-19) B.2(10+4y)-3(y-7) C.4(5+2y-5y-17) D.4(5+2y)-3(3y+7)
*Monday, January 5, 2015 at 2:06pm*

**Math**

the current temperature is - 7 degrees Celsius. The high temperature yesterday with as many degrees above 0 degrees Celsius as the current temperature is below zero degrees Celsius. Which expression can be used to find the number of degrees between the current temperature and ...
*Monday, January 5, 2015 at 12:15pm*

**Math**

Mabel is installing a square pool in her backyard and wants a circular fence to enclose the pool to create 4 grassy areas around the pool as show in the figure. If the pool is located at the coordinates (1, 5), (5, 8), (4, 1), and (8, 4), what is the amount of fencing Mabel ...
*Monday, January 5, 2015 at 11:03am*

**math**

3x-y=0 equation1 4x+3y=26 equation2 please can your find y and x
*Monday, January 5, 2015 at 10:07am*

**business math**

Anny invests $3,000, at 6% interest, compounded monthly for 1 year. Use Table 11-1 to calculate the compound amount for her investment
*Monday, January 5, 2015 at 9:34am*

**math,trigonometry**

solve each triangle described below using Δ ABC : 1)a = 10, A = 16°, B = 49° 2)a = 8, b = 7, A = 88° I dont know how to do this i forgot ... could u help (Steve, or Mrs.Sue, or Writeteacher plz help) this topic is Oblique triangle
*Monday, January 5, 2015 at 8:18am*

**math, solving Oblique triangle**

steve, hoe do you solve this cause i dont know how and i dont get it : b/sin49° = c/sin115° = 10/sin16°
*Monday, January 5, 2015 at 7:53am*

**math/ ratio**

there are 45 fruits. 21 are bananas, 15 are pineapples, and the rest are papayas. what is the ratio of the number of bananas to the number of pineapples to the number of papayas?
*Monday, January 5, 2015 at 7:25am*

**math, solving Oblique Δ**

can you help me to solve each triangle described below using ΔABC : 1)a = 10, A = 16°, B = 49° 2)a = 8, b = 7, A = 88°
*Monday, January 5, 2015 at 5:29am*

**math**

find three consecutive odd integers that their sum decrease by the second number, equals 50.
*Monday, January 5, 2015 at 12:29am*

**Math **

Compare the models for 1/3 and 2/6. How does the number of parts relate to the sizes of the parts?
*Sunday, January 4, 2015 at 10:21pm*

**Math**

Identify this polynomial as a perfect square trinomial, a difference of squares, or neither. 9a^2+9a+36 Is it difference of squares?
*Sunday, January 4, 2015 at 9:19pm*

**math**

roetopodsaoenrfir need to unscramble for a math paper
*Sunday, January 4, 2015 at 7:33pm*

**math**

un scramble math word roetopodsaoenrfir
*Sunday, January 4, 2015 at 7:25pm*

**Math**

Could someone please help me. Solve the linear equation by substitution. Y=10-2.2x 5x+y=70 For the first equation I am getting x=21.4 and for the second equation I am getting y=-37. The answers are 21 3/7 and -37 1/7. Could you show me how you do this so I can see where I went...
*Sunday, January 4, 2015 at 6:35pm*

**math**

Janice needs to figure out her cell phone bill. She is charged a monthly flat fee of $45. She is also charged $0.25 per minute. How many minutes dis she use if her cellphone bill was $145. write an equation and solution
*Sunday, January 4, 2015 at 4:28pm*

**math**

If the temperature is 3°f at 10:00 p.m, and the temperature falls four degrees overnight, what is the resulting temperature
*Sunday, January 4, 2015 at 4:19pm*

**Math**

7 billion chocolate chip cookies are consumed annually. In order to find out how many cookies are consumed on average by every person in the United States, what other information would you need to know in order to solve the problem?
*Sunday, January 4, 2015 at 2:38pm*

**Math**

Find the product 14.4/5 of 30 A. 24 B. 8 C.30 4/5 D.20 15. 14 * 3/5 A.42 B. 20 C. 8 2/5 D.28 3/5 16. 3/10 * 2/10 A.3/50 B. 1/10 C.3/5 D.1/10 17. -4 1/3 * 1 3/5 A. 4 1/5 B. -4 4/15 C. 5 1/5 D. -6 14/15 18. 2 3/7 * 2/3 A. 1 17/21 B. 2 1/21 C. 1 4/7 D. 1 13/21
*Sunday, January 4, 2015 at 1:53pm*

**math-algebra HELP!!!!**

1) A gym charges a one-time sign-up fee and then a regular monthly fee. The cost of a membership as a function of the number of months as a member is shown for 2010 and 2011 on the graph. a. What characteristics of the graph represent the sign-up fee and the monthly fee? What ...
*Sunday, January 4, 2015 at 1:24pm*

**Math**

An orchestra buys music stands for $42 each with $298 in its bank account. Write a function rule that shows how the account balance depends on the number of stands bought. What are the initial value and rate of change of the function?
*Sunday, January 4, 2015 at 1:18pm*

**math**

The weekly marginal cost functions C'(x) and the weekly marginal revenue function R'(x) of a company assembling personal computers are given by C'(x) =RM(3x^2-118x+1315) and R'(x)=RM(1000-4x), where x is the number of computers assembled per week. If the fixed ...
*Sunday, January 4, 2015 at 12:25pm*

**Math**

Kevin had 3/4 yd of string. He used 1/3 of it on a school project. How much string did he use? A.5/12 yd B.1/3 yd C.7/12 yd D.1/4 yd (numbers are all fractions)
*Sunday, January 4, 2015 at 11:59am*

**math**

the ninth term of an arithmetic progression is 52ind the and the sum of the first twelve terms is 414.find the first term and the common difference.
*Sunday, January 4, 2015 at 10:44am*

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