Tuesday
April 28, 2015

Homework Help: Math

Branches of Math

Recent Math Questions

Math
Two rectangles have an area of 81 square inches.Name two possible perimeters for the rectangles.
Thursday, February 26, 2015 at 8:26pm

math
On a weekend road trip, the Jensen family drove 210 miles on highways, where their car gets 35 miles for each gallon of gasoline, and 54 miles on city streets, where their car gets 18 miles for each gallon. How many gallons of gas did they use?
Thursday, February 26, 2015 at 8:20pm

math
a box containing 4 identical books weighs 5kg. If the weight of the box is 600g, what is the weight of each book?
Thursday, February 26, 2015 at 8:16pm

math
I bought 10 bananas. Each banana weighed 50 grams. If the price for bananas was $6.50 per kg, how much did I pay?
Thursday, February 26, 2015 at 8:13pm

math
Philip wants to buy a bicycle for $189. He was $24 and plans to save $15 each week. In how many weeks will he be able to buy the bicycle?
Thursday, February 26, 2015 at 8:03pm

math proportions
At a certain time of the day, a 5 foot 1 inch&​#8195;woman casts a 3 foot 4 inch&​#8195;shadow. How tall is a nearby tree that casts a 12 foot 10 inc​h shadow at the same time of ...
Thursday, February 26, 2015 at 7:52pm

Math
use the limit definition of the derivative to find f' a. let f(x)= 1/(x^2) b. let f(x)= x^4 c. let f(x)= 9(3√(x^2)
Thursday, February 26, 2015 at 7:52pm

Math vectors
For which of the following conditions will the cross product of two vectors be zero? a) If the angle between them is 90°. b) If the angle between them is 0°. c) If the angle between them is 45°. d) If the vectors have the same magnitude.
Thursday, February 26, 2015 at 7:50pm

Math
an airport mixes and additive into its jet fuel. The ration of fuel to additive needs to be kept the same. Complete the table below for amount of additive required for different amounts of fuel fuel (kg) 63 84 98 add 9(g) 30 42 48
Thursday, February 26, 2015 at 7:47pm

Math
John and Miles each had some money. First Miles gave John a quarter. Then John gave Miles one-third of his money. Then Miles gave John one-third of his money. At the end, John had $2.50 and Miles had $2.00. How much did they each start with?
Thursday, February 26, 2015 at 7:37pm

math
an apple orchard covers 12 acres. There is a watering spout for every 1/4 acre. Are there more or fewer than 12 watering spouts? I think there are more. I think there are 48 watering spouts. Is this correct?
Thursday, February 26, 2015 at 7:30pm

Math
Dear Ms. Sue, Should I multiply & if I do will the answer be 6? Will it be shorter for Raul's throw? Now am I correct?
Thursday, February 26, 2015 at 7:22pm

math
Carlos can throw a ball 14 yards. Raul can throw 3/7 of that distance. Is Raul's throw longer or shorter than 14 yards? I think it is longer by 32 2/3 yards. Is this correct?
Thursday, February 26, 2015 at 7:18pm

math
dear ms. sue yes each piece is suppose to be 1/4 foot long.
Thursday, February 26, 2015 at 7:14pm

math
Yoshi has a rope 30 feet long. He must cut it into pieces that are 1/4 long. Will he get more or fewer than 30 pieces? I think more because he will divide it. So I think he will get 120 pieces. Is this correct?
Thursday, February 26, 2015 at 7:08pm

Math/Solve
ABC phone company charges $17 per month plus $0.03 per minute of phone calls. XYZ phone company charges $8 per month plus $0.06 per minute of phone calls. How many minutes of phone calls in a month make XYZ phone company a better deal?
Thursday, February 26, 2015 at 6:55pm

Math
The coordinates of triangle RPQ are R(2, -1), P(2, 2), and Q(-2, -1). What is angle P?
Thursday, February 26, 2015 at 6:48pm

Math
Identify the outlier for the following data set: 2.4,5.3,3.5,22.6,1.8,2.1,4.6 A. 2.4 B. 2.1 C. 22.6 D. 3.5 Is the answer C? Thank you
Thursday, February 26, 2015 at 6:25pm

math
The Position of two A and B on the earth’s surface are (36°N, 49°E) and (36°N, 131°W ) respectively. (a) The difference in long between town A and town
Thursday, February 26, 2015 at 6:15pm

math
it rained on 2/5 of all the days last month. On 1/6 of these rainy days it thunderstorm. On what fraction of the days last month were there thunderstorms?
Thursday, February 26, 2015 at 6:08pm

math
How many UNITS and how many MILES had Hector run when he finished the race? Explain how you know. Label each ANSWER. Example : ____ units _____ miles and I know this because _______.
Thursday, February 26, 2015 at 6:03pm

Math
Are these angle measures to the nearest tenth of a degree correct? 1. cos^-1(.3) Ans: 72.5 2. t^-1(38.4) Ans: 88.5 3. sin^-1(.7) Ans: 44.4
Thursday, February 26, 2015 at 6:03pm

math
You need to save $5 more than8 times your paycheck to buy a dirt bike .your paycheck is $50. how much money do you need to save ?
Thursday, February 26, 2015 at 5:38pm

math
2x+x=33 how would you solve this equation
Thursday, February 26, 2015 at 5:26pm

math
Two cups, two plates, and a pot cost $10.20 at a garage sale. A cup costs twice as much as a plate. The pot costs $3 more than a cup. What is the price of the pot? Explain how you got your answer.
Thursday, February 26, 2015 at 5:17pm

math
jake has 6 cards. 4 of his cards are red and 2 cards are blue. Alicia also has 6 cards. half of her cards are red. who has more red cards.
Thursday, February 26, 2015 at 5:03pm

Math
Two cups, two plates, and a pot cost $10.20 at a garage sale. A cup costs twice as much as a plate. The pot costs $3 more than a cup. What is the price of the pot? Explain how you got your answer.
Thursday, February 26, 2015 at 5:02pm

math important
what is 1661.9 to the nearest tenth
Thursday, February 26, 2015 at 3:22pm

Math- Precalculus
A utility company has the following rate schedule for natural gas usage in a city’s business district: Monthly service charge $8.80 Per therm service charge: 1st 25 therms : $0.6686/therm Over 25 therms: $0.85870/therm (a) What is the charge for using 25 therms in one ...
Thursday, February 26, 2015 at 3:19pm

Math
Fran wants to cover a rectangular box with contact paper. The box is 10cm long, and 5cm wide and 5cm high. How much paper will she need to cover all 6 sides?
Thursday, February 26, 2015 at 2:34pm

Math
Alex is making homemade cereal. For every 3 cups of granola he adds 1 cup of cranberries. If he uses a total of 3 cups of dried cranberries, how many cups of granola are in the cereal.
Thursday, February 26, 2015 at 2:00pm

Math
A library has fiction and nonfiction books. 2/5 of the library books are fiction. Of these 1/5 are mysteries. 1/3 of the nonfiction books are mysteries. What fraction of all the books are mysteries?
Thursday, February 26, 2015 at 1:51pm

math
The coach uses a scale drawing of the soccer field. the diagram uses a scale of 1/4 inches : 30 feet.What are the actual dimensions? What is the length and width of the field? What us the area of the field?
Thursday, February 26, 2015 at 12:50pm

Math - Algebra
our riding your bike to the park, sit to read for a while, and then ride your bike home. It takes you less time to ride from the park to your house than it took to ride from your house to the park. Draw a sketch of a graph that shows your possible distance traveled over time. ...
Thursday, February 26, 2015 at 12:45pm

Math
I have done two parts but no idea how to the third one. The height, h, in meters, of a firecracker fired into the air can be modeled using the function h(t)=-5(x-4)^2+85, where t is the time, in seconds, after the firecracker is fired. c) Use the graph to estimate i) how long ...
Thursday, February 26, 2015 at 12:45pm

math
At 8 A.M., Dylan and his neighbor, Mickey, drove in their cars to a city that was 240 mi. away from their neighborhood. When Dylan reached the city, Mickey had 40 mi. to go. He finally completed the trip 48 minutes later. a) How long did it take Mickey to drive to the city? b...
Thursday, February 26, 2015 at 12:37pm

math
Given the equation y equals one third x + 7 what would it be easy y value for the corresponding x value of 18
Thursday, February 26, 2015 at 12:37pm

Math
–37of the people who live in an apartment building are men. 58of the remaining people are women. The rest are children. A total of 220 men and women live in the building. How many people live in the apartment building altogether?
Thursday, February 26, 2015 at 12:36pm

math
Jennifer Rick went to Sunshine Bank to borrow $3,500 at a rate of 10¾%. The date of the loan was September 7. Jennifer hoped to repay the loan on January 15. Assume the loan is calculated using ordinary interest. How much will Jennifer totally repay?
Thursday, February 26, 2015 at 12:27pm

Math
The table below shows the number of students from different classes of two schools who participated in a sports competition: School A 25 21 2 22 20 21 20 23 1 School B 3 2 1 5 4 2 3 4 3 Part A: How can you use box plots to compare the median and interquartile range of the data...
Thursday, February 26, 2015 at 12:12pm

Math
Find the intersection of the sets A = {3, 4, 7, 9, 13} and B = {3, 7, 10, 13, 17}. null set {3, 7, 13} {3, 4, 7, 9, 10, 17} {3, 4, 7, 9, 10, 13, 17}--- my answer Question 3.3. Choose the correct answer. Find the union of the two sets A = {4, 8, 10, 12, 14} and B = {12, 14}. {...
Thursday, February 26, 2015 at 12:02pm

Math
Jim wants to borrow some money but wants to find the best deal. Which is his best option using simple interest? Round to 2 decimal places.
Thursday, February 26, 2015 at 11:40am

math
let V be the set of all real-valued continuous functions defined on R1. If f and g are in V, we define f ¨’ g by (f ¨’ g)(t) = f(t) + g(t). If f is in V and c is a scalar, we define c f by (c f)(t) = cf(t). Then V is a vector space, which is denoted by C(&#...
Thursday, February 26, 2015 at 11:30am

math
How many real roots exist if the discriminant of the equation=0?
Thursday, February 26, 2015 at 11:24am

math
i have to find the surface area of a cylinder with the height of 15 and the circumference of 4 to the nearest tenth of a square unit and cannot figure it out HELP PLEASE
Thursday, February 26, 2015 at 11:20am

MATH
Which method of solving quadratic equations should be used when only an estimated solution is necessary? factoring quadratic formula graphing MY GUESS GRAPHING?
Thursday, February 26, 2015 at 11:18am

Math
A bookshop has some faction and nonfiction books. 2/5 of. The books are fiction. Of these, 1/5 are mysteries. 1/3 of the. Nonfiction books are mysteries. What fraction of all the books are mysteries?
Thursday, February 26, 2015 at 11:11am

math question
how is this not a subspace of R3? The set of all vectors of the form a b c , where a > 0.
Thursday, February 26, 2015 at 11:10am

math
John has $6000 to invest. He invests part of it at 5% and the rest at 8%. How much should be invested at each rate to yield 6% on the total amount?
Thursday, February 26, 2015 at 10:26am

Math!! Help ASAP
Calculate the slant height for the given cone. Round to the nearest tenth. Diameter=18 cm. Height=7 cm. A.11.2 B.12.5 C.14.8 D.11.4 ******** Correct?!?!
Thursday, February 26, 2015 at 9:41am

math
Please check Fewer than 45 people attending d the show X<45 A student had $5 but does not have enough to purchas three pair of socks 3x<5 At least 127 students attended the rock concert 127>x No more than 50 students walked in the walkathon X>50
Thursday, February 26, 2015 at 9:27am

math
Use logarithmic differentiation to find the derivative of the function. y = (x^4 + 2)^2(x^3 + 4)^4
Thursday, February 26, 2015 at 6:15am

Math
A trapezoid has an area of 91 cm2. If the height is 13 cm and one side is 6 cm, what is the length of the other side?
Thursday, February 26, 2015 at 6:04am

math
Organizer of school graduation does have three sections of chairs. 1120 chairs are arranged for graduates, 1400 for invited guests and 896 for lecturers. If all rows have same number of chairs, calculate the greatest number of chairs in each row if no chairs are left over? ...
Thursday, February 26, 2015 at 2:28am

Math
Express the following as a logarithm and simplify. 1. log(3x^2 + 11x - 20) - log(3x - 4) 2. 1/6 log3 27 + log3 18 - log3 2 3. log5 cube root of 625 4. 2loga x^3 + 3loga y + 4loga z - 3logz w
Thursday, February 26, 2015 at 1:12am

math(5th grade)
In the choir, 1/2 of the members are boys and 1/2 are girls. If 1/4 of the boys are5th graders what fraction of the whole choir is 5th grade boys?
Thursday, February 26, 2015 at 12:54am

INTEIER DESIGN
When you have completed your exam and reviewed your answers, click Submit Exam. Answers will not be recorded until you hit Submit Exam. If you need to exit before completing the exam, click Cancel Exam. Questions 1 to 20: Select the best answer to each question. Note that a ...
Thursday, February 26, 2015 at 12:45am

Math Help!
Find the lateral area of the square pyramid 22 height 8 base 8 width.
Thursday, February 26, 2015 at 12:19am

Math (Help please)
What are the like terms of -x, -8x^2, and -2. What is the like term of 5 j^2 k^2?
Thursday, February 26, 2015 at 12:18am

math
A dog weighs 44 pounds and the veterinarian thinks it needs to lose 7 pounds. Mikala wrote the equation x+7=44 to represent the situation. Kirk wrote the equation 44-x=7. Which equation is correct? Can you write another equation that represents the situation? Thank you for ...
Thursday, February 26, 2015 at 12:16am

math
Alan has partially completed the chart showing the distance between his town, Greenville and two other towns. DISTANCE BETWEEN GREENVILLE and NEARBY TOWNS (miles) Parker = 29 Hadley = ? 1)The distance between Hadley and Greenville is 13 miles less than the distance between ...
Thursday, February 26, 2015 at 12:05am

math
Write Equation to Represent Situation: In the school band, there are 5 trumpet players and f flute players. There are twice as many flute players as there are trumpet players. THANK YOU
Wednesday, February 25, 2015 at 11:38pm

math
Write an equation to represent each situation: 1)Juanita has 102 beads to make n necklaces. Each necklace will have 17 beads. 2)Craig is c years old. His 12-year-old sister Kaitlin is 3 years younger than Craig. 3)Kim rented skates for h hours. The rantal fee was $2 per hour ...
Wednesday, February 25, 2015 at 11:16pm

MATH
Joanne has a garden that is 9 feet long by 6 feet wide. She wants to increase the dimensions of the garden by the same distance each way and have the area of the new garden be five times the area of the present garden. How many feet should she add to both the width and the ...
Wednesday, February 25, 2015 at 11:16pm

Math Help!
If a big cylinder has the radius of 24cm and a height of 18cm, what would the height be for the smaller cylinder with 4cm as the radius? Thank you so much.
Wednesday, February 25, 2015 at 11:12pm

math help!!!!! Thanks
If a big cylinder has the radius of 24cm and a height of 18cm, what would the height be for the smaller cylinder with 4cm as the radius?
Wednesday, February 25, 2015 at 10:16pm

Math
What is the combined height of 3 nickels, 2 nickles, and 1 nickle
Wednesday, February 25, 2015 at 9:34pm

Math
What is the center of a circle with endpoints (-4,3) and (6,-5)? Is it (2,-2)?
Wednesday, February 25, 2015 at 9:21pm

math
The LCm of two numbers is 48 and their GCF is 8. The sum of the two numbers is 40. What are the two numbers
Wednesday, February 25, 2015 at 8:58pm

math
I want to plot my vertex on a cartesian plane. My question is can i go by different values on the axis? Since my vertex is (1, -64) could i go by 8 on the y axis, and by 1 on the x axis???
Wednesday, February 25, 2015 at 8:54pm

math
There are 6,975 folders if 1,735 folders were handed out . How many will I have left? 6,975- 1,735=
Wednesday, February 25, 2015 at 8:23pm

Math
I have a same question as someone else but a little different. Based on a scale 1 inch equals 15 miles. Washington to Franklin is 1 1/2 inches, Franklin to Lincoln is 1 inch How much further from Franklin is Washington than is Lincoln I to got 7 1/2 inches? But I was also told...
Wednesday, February 25, 2015 at 8:13pm

Math
Express the following as a logarithm and simplify. 1. log(3x^2 + 11x - 20) - log(3x - 4) 2. 1/6 log3 27 + log3 18 - log3 2 3. log5 cube root of 625 4. 2loga x^3 + 3loga y + 4loga z - 3logz w
Wednesday, February 25, 2015 at 8:06pm

Math
If x=<-6,21>, then 1/3x= Write the final answer in <x,y> form.
Wednesday, February 25, 2015 at 8:03pm

math
Marinda made a drink that contained 2 pints of apple juice, 3 pints of grape juice, and 2 pints of cranberry juice. How many pints of juice did Marinda make?
Wednesday, February 25, 2015 at 7:58pm

Math
1 inch = 15 miles: Franklin to Washington is 45 Miles (3 inches) Franklin to Lincoln is 30 miles (2 inches) How much farther from Franklin is Washington than is Lincoln? I worked it out to be 7 1/2 miles but my teacher says I am wrong? She says the answer is either 11 - 17 - ...
Wednesday, February 25, 2015 at 7:58pm

math help!!!!! Thanks
Find the surface area of a cone with a radius of 8in. and a height of 7 in. I forgot the formula how to work this out can somebody help me. Thanks
Wednesday, February 25, 2015 at 7:40pm

math help!!!!! Thanks
Find the volume of the cylinder with a radius of 34m and a height of 27m. This is how I did it can you please tell me if I did it correct, thanks. V= 3.14r^2h = 3.14*34^2*27 = 3.14*1156*27 = 98005.68 If this is not it can you please explain what I did wrong?
Wednesday, February 25, 2015 at 7:03pm

math
I want to plot my vertex on a cartesian plane. My question is can i go by different values on the axis? Since my vertex is (1, -64) could i go by 8 on the y axis, and by 1 on the x axis???
Wednesday, February 25, 2015 at 6:51pm

math
Anita has 2 sisters and 3 brothers. The mean of all their ages is 6yrs.What will their mean age be 10yrs from now?20 yrs from now?
Wednesday, February 25, 2015 at 6:35pm

math
There are 30 violin students, 1/3 as many viola students as violin students, and 1/5 as many cello students as violin students. How many students are in all? I said 30 violin students, 40 for viola, and 36 for cello. 1/3 of 30= 10 (10+30) 1/5 of 30= 6. (6 +30) It should be 30...
Wednesday, February 25, 2015 at 6:10pm

Math
3x + 2x - 4x = 6 what is x
Wednesday, February 25, 2015 at 6:09pm

Math
Given the equation K 8= 10 Solve for k
Wednesday, February 25, 2015 at 5:56pm

math
Which algebraic equation models the English sentence, a number subtracted from 8 is equal to 4? A. 8 − x = 4 B. x − 8 = 4 C. 8 − 4 = x D. x − 4 = 8
Wednesday, February 25, 2015 at 5:47pm

Math
Which of the sentences below could represent 4 ÷ p = 2? A. Four divided by two is equal to a number. B. Four divided by a number is equal to two. C. A number divided by four is equal to two. D. Four times a number is equal to two.
Wednesday, February 25, 2015 at 5:47pm

math
Which of the following algebraic equations models the English sentence, a number decreased by two is equal to four? A. w + 2 = 4 B. 2 − w = 4 C. w − 2 = 4 D. w = 2 − 4
Wednesday, February 25, 2015 at 5:46pm

math
If you formed an algebraic equation to model the sentence, three times a number is equal to nine, how many variables would be in the equation? A. 1 B. 2 C. 3 D. 5
Wednesday, February 25, 2015 at 5:46pm

Math
A wooden board is 12 feet long. If you cut the board into 1 1/2 foot sections, how many sections will you end up with?
Wednesday, February 25, 2015 at 5:35pm

Math
Ms.Li spent $840 on a vacation. She spent 2/3 of the amount on a train ticket and 1/2 of the remaining amount on food. how much did she spend on the ticket and food together?
Wednesday, February 25, 2015 at 5:07pm

math
Which of the following subsets of the vector space Mnn are subspaces? (a) The set of all n × n symmetric matrices (b) The set of all n × n diagonal matrices (c) The set of all n × n nonsingular matrices
Wednesday, February 25, 2015 at 4:25pm

Urgent math help
what is the x intercept y = -5x+20
Wednesday, February 25, 2015 at 4:18pm

math
Your business provides a service to local residents. Your fixed costs are $2,000 per month, and you expect 40 customers per month. The variable cost associated with each service is $35. 1. Using cost-based pricing and a markup of 20%, what should the price be? Show ...
Wednesday, February 25, 2015 at 4:14pm

Math (Ratios and Similar Polygons)
a baseball team played 140 regular season games. The ratio of the number of games they won to the number of games they lost was 3 - 4 how many games did they win? how many games did they lose? I just need help on a better way of understanding it.
Wednesday, February 25, 2015 at 4:02pm

math
A number K increased by 10 is the same as 24 How would you write this as an equation
Wednesday, February 25, 2015 at 4:00pm

math
I don't get this I've been absent for 3 weeks On a math quiz Mary score 3 points for each of the 12 multiple-choice question she answered correctly and five points for each of the eight free response question she answered correctly. What was the total number of points ...
Wednesday, February 25, 2015 at 3:43pm

math
john told raquel that if he spent up to $30 from his saving account, his savings account would have 3/4 as much in it as it has now. From John's statement, raquel can deduce that the least amount of money that john could have in his savings account now is what?
Wednesday, February 25, 2015 at 3:33pm

Math
Find the sum of the interior angles of a nonagon. (1 point) 140° 1,620° 1,260°------ 1,450° My teacher showed this question and she explained the answer was the 3rd one but i just dont get it
Wednesday, February 25, 2015 at 3:16pm

math
I need a little help on my math.Lesson 5: Square Roots and Irrational Numbers Math 7 B Unit 2: Measurement. on CONNECTIONS ACADEMY. PLEASE :-(
Wednesday, February 25, 2015 at 2:31pm

math
OQRS IS A QUADRILATERAL SUCH THAT OQ= -6,3 OR= -3,7 AND OS 1,5. T IS THE POINT ON OQ SUCH THAT OT:TQ= 2:2. PROVE QRST IS A PARALLELOGRAM
Wednesday, February 25, 2015 at 2:30pm

Math
What is the approximate volume of a sphere with a radius of 7.16 cm? Use 3.14 to approximate pi and round your answer to two decimal places.
Wednesday, February 25, 2015 at 1:59pm

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