Branches of Math
Recent Math Questions
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
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
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
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
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. Smiths class? b. What fraction ...
Tuesday, January 6, 2015 at 5:08pm
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
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
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
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
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
((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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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 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
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
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
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. Marys goals for each day of the week are 5% lower than the goals for other managers. ...
Monday, January 5, 2015 at 5:34pm
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
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
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
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
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 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
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
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
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
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
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
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
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
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
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
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
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
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