Thursday

January 29, 2015

January 29, 2015

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**Math**

The area of a parallelogram is 84 cm² the base of the figure is 12 cm what is the height?
*Tuesday, January 27, 2015 at 7:18pm*

**Math**

Will I use the distance formula for this problem. A airplane traveling at 390 km/hr in still air encounters a 65 km/hr headwind. How long will it take the plane to travel 725 km into the wind? 390=r*65
*Tuesday, January 27, 2015 at 7:08pm*

**Math**

Directions: Find the Location on Unit Circle, Period & General Solution for this problem>>>>>>> sin^2x=3cos^2x What I have so far: sin^2x=3cos^2 sin^2x/cos^2=3 tan^2x=3 tanx=+and- sqrt3
*Tuesday, January 27, 2015 at 6:09pm*

**Math**

The average size 8 shoe is approximately 8 1/2 inches plus or minus a quarter of an inch . Write and solve an absolute value inequality that shows the range of possible lengths of a person'a foot that would wear a size 8.
*Tuesday, January 27, 2015 at 6:06pm*

**Math **

At a parade 1/4 of the participants have red hair, 1/6 of them have brown hair, and the rest of the participants have black hair. What fraction of the participants have black hair?
*Tuesday, January 27, 2015 at 6:02pm*

**Math**

Madison buys 2 3/5 pounds of meat. Her neighbor buys 3/4 pound more meat than Madison. How many pounds of meat do they buy altogether?
*Tuesday, January 27, 2015 at 5:57pm*

**Math**

Leena bakes a loaf of bread. She eats 1/8 loaf of bread and give 1/6 of it each of her 3 friends. What fraction of the loaf of bread is left?
*Tuesday, January 27, 2015 at 5:56pm*

**math**

A room measure 12fy by 15ft find the scale that would allow the room to be showed large as possible on a piece of paper 7in by 8in explain your reasoning
*Tuesday, January 27, 2015 at 5:49pm*

**math**

A rectangular room is 20 meters by 25 meets. It cost $20.00 per square meter to paint a room. How much would it cost
*Tuesday, January 27, 2015 at 5:46pm*

**math**

a carpenter has several boards of equal length. he cuts 3/5 of each board . after cutting the boards the carpenter notices that he has enough pieces left over to make 4 of the original boards. how many boards did the carpenter start with
*Tuesday, January 27, 2015 at 5:46pm*

**Math Help **

The average size 8 shoe is approximately 8 1/2 inches plus or minus a quarter of an inch . Write and solve an absolute value inequality that shows the range of possible lengths of a person'a foot that would wear a size 8.
*Tuesday, January 27, 2015 at 5:37pm*

**Psychology**

Treena is a personable student in Mr. Jordan’s math class. Mr. Jordan can see that Treena is popular with her peers. He regularly sees her conversing animatedly with her friends in the cafeteria and before and after school. She does well in class also. Her homework is ...
*Tuesday, January 27, 2015 at 4:57pm*

**math **

An open box is to be made from a flat square piece of material 20 inches in length and width by cutting equal squares of length x from the corners and folding up the sides. (a) Write the volume V of the box as a function of x. Leave it as a product of factors; you do not have ...
*Tuesday, January 27, 2015 at 4:48pm*

**Math**

Solve the following: x + 4=13
*Tuesday, January 27, 2015 at 4:11pm*

**Math**

Jamie is saving money to buy a new video system. So far, he has saved $16, which is 15% of the total cost of the system. What is the total cost of the system?
*Tuesday, January 27, 2015 at 3:57pm*

**Math - Problem solving**

I used the guess and check method for solving this problem but would like to know how to set up the equation. A camp counselor buys granola bars and juice drinks for the campers. She decides to buy 3 times as many drinks as granola bars. Predict how many of each she can buy on...
*Tuesday, January 27, 2015 at 3:23pm*

**Math**

6-4b is less than or equal to 14 I got 20 at first Then -2 Im very confuzzled Help please
*Tuesday, January 27, 2015 at 3:03pm*

**math**

a 150g-iron ball at 95 Celsius is dropped into a cavity in a block of ice.the cavity is then found to contain 21 g of water . CALCULATE THE HEAT OF FUSION OF ICE (The specific heat capacity of iron is 0.11 cal/g x C degrees.)
*Tuesday, January 27, 2015 at 2:52pm*

**Math**

Hello! Can you check my answers for these questions? Thank you in advance (= 1. The following ordered pairs give the scores on two consecutive 15-point quizzes for a class of 18 students. (7, 13), (9, 7), (14, 14), (15, 15), (10, 15), (9, 7), (14, 11), (14, 15), (8, 10), (9, ...
*Tuesday, January 27, 2015 at 2:46pm*

**Math**

Needing help setting these problems up...not necesarily giving me the answers. thanks. In January 2009 the state of Nevada was facing a budget deficit of $1.5 billion. The population of the state was approximately 2 million. How much would each person in the state have to ...
*Tuesday, January 27, 2015 at 2:41pm*

**Math 20-1**

Suppose the height, h, in feet, of a trampolinist above the ground during one bounce is modeled by the quadratic function h(t) = -16t^2 + 42t + 3.75 . For what period of time is the trampolinist at least 22 ft above the ground? Round your answers to the nearest hundredth. (2 ...
*Tuesday, January 27, 2015 at 2:34pm*

**math**

Determine the value of k in y=kx^2-5x+2 that will result in the intersection of the line y=-3x+4 with the quadratic at a) two points (1 mark) b) one points (1 mark) c) no point (1 mark) Here's my work on it: kx^2-5x+2=-3x+4 kx^2-2x-2=0 a)b^2-4ac (-2^2-4(1)(-2) (-4--8) (4) ...
*Tuesday, January 27, 2015 at 2:28pm*

**math **

How would I show my work to the math problem? 6 friends share 4 pear?
*Tuesday, January 27, 2015 at 2:27pm*

**math**

use the function rule f (x) = 3x - 2 find the output f (1.5) a. 2.5 b. -2.5 c. 6.5 d. -6.5
*Tuesday, January 27, 2015 at 2:24pm*

**math**

6 friends shared 4 pear?
*Tuesday, January 27, 2015 at 2:16pm*

**Math \ Algebra**

Hello! Can you check my answers for these questions? Thank you in advance (= 1. The following ordered pairs give the scores on two consecutive 15-point quizzes for a class of 18 students. (7, 13), (9, 7), (14, 14), (15, 15), (10, 15), (9, 7), (14, 11), (14, 15), (8, 10), (9, ...
*Tuesday, January 27, 2015 at 1:57pm*

**math **

a 150g-iron ball at 95 Celsius is dropped into a cavity in a block of ice.the cavity is then found to contain 21 g of water . calculate the heat of fusion of ice.
*Tuesday, January 27, 2015 at 1:54pm*

**Math - Problem solving**

How do I solve this type of problem? How many steps are there. The cost of a membership at a health club last year was 75% of the cost at the club this year. This year's membership costs $20 more than last year's membership. Find the cost of a membership last year and ...
*Tuesday, January 27, 2015 at 1:39pm*

**Math**

Which statement is a true statement 1. All rectangles are squares 2. All squares are rectangles 3. Every rhombas is a rectangle 4. Every rectangle is a rhombas
*Tuesday, January 27, 2015 at 12:55pm*

**math**

mr.flanders drives 1 2/3 miles to school and 1 2/3 miles home each day.he also drives an extra 2 2/7 miles to go to the gym.how many miles does he drive in one day?
*Tuesday, January 27, 2015 at 12:52pm*

**Math**

Find the adjusted balance due at maturity for a 90 day note of $15000 at 13.7% ordinary interest if a partial payment of $4000 is made on the 60th day of the loan.
*Tuesday, January 27, 2015 at 12:41pm*

**Math**

How do I find the exact interest on a loan for $3000 with a simple interest annual interest rate of 15% that was made on June 11 and was due on August 11.
*Tuesday, January 27, 2015 at 11:44am*

**MATH!!**

~Determine whether each sequence is arithmetic or geometric fund the next three terms~ *Doing a math unit test and stuck on these five* 1.14,19,24,29.... 2.-2,8,-16,32... 3.81,27,9,3... 4.What are the first four terms of an arithmetric sequence if the common diffrence is 1.5 ...
*Tuesday, January 27, 2015 at 11:36am*

**math**

14z=56
*Tuesday, January 27, 2015 at 11:05am*

**math**

A man was injured in an accident at work he receives a disability grant of R4800 in the first year. This grant increases with a fixes amount each year.. a). What is the annual increase if over 20 years he would have received a total of R143500 b). His initial annual ...
*Tuesday, January 27, 2015 at 10:29am*

**Math**

How do you find the surface area of a rectangular pyramid?
*Tuesday, January 27, 2015 at 10:19am*

**Math / Algebra**

Can you check my work? Thank you :) 1. The Domain of a function F is the same as the range of F^-1 (True or False?) Answer: True. 2. Does the function y = |x-2| have an inverse? Select the best answer. A. Yes, it passes the horizontal line test. B. No, it does not pass the ...
*Tuesday, January 27, 2015 at 10:14am*

**Math word problems**

An outdoor supply store has its regularly priced $160 jackets on sale for $120. What is the discount rate? 120/160*100=75% but that doesn't seem right. I believe it should be 25% discount, but I dont know how to set that up. Can someone tell me if the above is correct, if ...
*Tuesday, January 27, 2015 at 9:58am*

**math**

what is 8899 rounded to the nearest thousand?
*Tuesday, January 27, 2015 at 7:30am*

**Math **

what factor do 4x^2 +13x+3 and 8x^2+22x-6 have in common? i try and got answer of 12, am i right or wrong?
*Tuesday, January 27, 2015 at 2:39am*

**MATH!!**

the ramp shown below is used to move crates of oranges to loading docks at diffrent heights.when the horizontal distance ab is 15 feet the height of the loading dock,bc,is 3 feet.what is the height of the loading dock de
*Tuesday, January 27, 2015 at 1:23am*

**math**

If 1+2+3+...+200=x, what is (1+2+3+...+200)-(2+4+6+...+200)? (solution pls... tnx)
*Tuesday, January 27, 2015 at 1:07am*

**math**

Tina wants to buy flannel sheets. She reads that a weight of at least 190 grams per square meter is considered high quality. She finds 3 options for flannel sheets: 1)1,100g of flannel in 6 square meters, $45. 2)1,260g of flannel in 6.6 square meters, $42. 3)1,300g of flannel ...
*Tuesday, January 27, 2015 at 1:04am*

**math**

The sum of two numbers is 12. The sum of their reciprocal is 3/8? what are the numbers?
*Tuesday, January 27, 2015 at 1:00am*

**math **

A circle of radius 3 is centered at the origin and passes through the point (2,−5‾‾√). (a) Find an equation for the line through the origin and the point (2,−5‾‾√). y= (b) Find an equation for the tangent line to the circle at (2...
*Tuesday, January 27, 2015 at 12:29am*

**math **

The radiator in a car is filled with a solution of 70 per cent antifreeze and 30 per cent water. The manufacturer of the antifreeze suggests that for summer driving, optimal cooling of the engine is obtained with only 50 per cent antifreeze. If the capacity of the raditor is 4...
*Tuesday, January 27, 2015 at 12:28am*

**MATH**

Sabah has $450 to pay for college textbooks. She expects to pay about $75 per book. Her friend told her that 4 of them can be checked out of the library for free. Complete the equation below to find the total number of books that Sabah can get for her classes. Use b to ...
*Monday, January 26, 2015 at 11:28pm*

**Math**

On a centimer dot array draw all possible rectangles with perimeter of 16 cm and sides whose lengths are whole centimeters label the lengths of two adjacent sides of each rectangle
*Monday, January 26, 2015 at 11:26pm*

**Math**

Alexander Smith receives a salary of $250 per week plus a commission of 15% on all sales over $1500. Find his earnings during a week in which sales totaled $3000. Not sure how to set this up.
*Monday, January 26, 2015 at 10:27pm*

**Math**

Last week Gina's art teacher mixed 9 pint of red paint with 6 pints of white paint to make pink.Gina mixed 4 pints of red paint with 3 pints of white paint to make pink. Did Gina use the same ratio of red as her teacher? Explain
*Monday, January 26, 2015 at 10:18pm*

**math**

Hi and thank you for your help. Find the value of the following: 11!6! over 12!4! If your answer is not an integer, write it as an exact fraction. Thank you again
*Monday, January 26, 2015 at 10:10pm*

**math**

Franco hikes 4 miles each day for 5 days. He carries 100 ounces of water with him. It takes him 1 hour to hike 4 miles. How many hours did he hike in 5 days?
*Monday, January 26, 2015 at 10:04pm*

**Math**

The Booster Club has a goal of raising at least $300. The Club has already raised $150. The Booster Club is sponsoring a pancake breakfast and charging $4.00 per ticket. What inequality would represent the number of tickets (t) that the Booster Club must sell to meet its goal...
*Monday, January 26, 2015 at 9:28pm*

**Math**

Russell is 6 years older than Samantha. In 4 years the sum of their ages will be 78. How old is Russell now? I have been having a lot of issues this problem. I can't figure out how to really answer this question.
*Monday, January 26, 2015 at 9:20pm*

**Math**

The Booster Club has a goal of raising at least $300. The Club has already raised $150. The Booster Club is sponsoring a pancake breakfast and charging $4.00 per ticket. What inequality would represent the number of tickets (t) that the Booster Club must sell to meet its goal...
*Monday, January 26, 2015 at 9:15pm*

**gifted math**

24 pencils in a box each student in the class gets 6. There are no pencils left over. How many students are in the class? write an equation to represent the situation.
*Monday, January 26, 2015 at 8:58pm*

**Math**

Shelia uses three times more water than lemon juice. She has 2 gallons of water. How much lemon juice does she need?
*Monday, January 26, 2015 at 8:53pm*

**math**

Eric Rose wants to buy a Ford Explorer that costs $26,000 with an interest charge of $3,000. If there are 50 equal payments required, what will Eric's monthly payment be?
*Monday, January 26, 2015 at 8:42pm*

**Math**

-3/4>-6/10a a>2/5 my answer
*Monday, January 26, 2015 at 8:18pm*

**Math**

The 2008 attendance at the Ohio State Fair was at least 16,700 less than the attendance in 2009. If the attendance in 2008 was 809,300, write and solve an inequality to find the 2009 attendance.
*Monday, January 26, 2015 at 8:05pm*

**Math**

A bottle contains some milk. Three glasses of capacity 4l,6l,and 8l are to be filled an exact number of times from it. What must be the least capacity of the bottle.
*Monday, January 26, 2015 at 8:03pm*

**Math**

-3/4b> -1/4 Answer b>1/3
*Monday, January 26, 2015 at 7:54pm*

**math **

Taylor baked a cake to serve after dinner suppose she cut the cake into 8 equal size pieces and 6 people ate all the pieces explain how they could have divided the pieces so that everyone ate the same amount of cake
*Monday, January 26, 2015 at 7:34pm*

**Math**

Hi! Okay so I started to attempt this math problem; 3cot^2x-1=0. However, I'm a little stuck. My teacher wants me to find the Location on The Unit Circle, Period, and General Solution. Can someone check what I have and help me with the rest? 3cot^2x-1=0 cot^2x=1/3 tan^2x=3...
*Monday, January 26, 2015 at 7:21pm*

**math**

what is the square root of mx and b?
*Monday, January 26, 2015 at 7:14pm*

**Math **

Q. Seven companies each agreed to pay $120,000 for commercial spots at the local television station. What was the total paid to the television station by all seven companies. - A. Do you mulpite seven * 120,000 ?? If so I got 240,000 but my friends are telling me it's 840...
*Monday, January 26, 2015 at 7:03pm*

**Math**

15 <_ -k/4 -9 I am confused how to solve this problem. Thanks
*Monday, January 26, 2015 at 6:51pm*

**Math**

Explain how you know 6/6 and 1 are equivalent
*Monday, January 26, 2015 at 6:49pm*

**math**

A square storage area measures 10 m on a side. By how much must each side be shortened to decrease this area to less than half the original area? (3 marks - show your work)
*Monday, January 26, 2015 at 6:42pm*

**math**

The length of a rectangle is 5 cm more than its width. What are the possible dimensions of the rectangle if the area must be at least 84 cm2? (2 marks)
*Monday, January 26, 2015 at 6:42pm*

**math**

Suppose the height, h, in feet, of a trampolinist above the ground during one bounce is modelled by the quadratic function h(t) = -16t^2 + 42t + 3.75 . For what period of time is the trampolinist at least 22 ft above the ground? Round your answers to the nearest hundredth. (2 ...
*Monday, January 26, 2015 at 6:41pm*

**math**

Determine the value of k in y=kx^2-5x+2 that will result in the intersection of the line y=-3x+4 with the quadratic at a) two points (1 mark) b) one points (1 mark) c) no point (1 mark) Please and thank you!
*Monday, January 26, 2015 at 6:27pm*

**Math (Ms.Sue)**

Tamera texted a photo of a dolphin to 5 friends. She asked her 5 friends to text the photo to 5 more friends. The photo chain continued with each friend texting the photo to 5 friends. How many photos of the dolphin will be texted after 4 rounds? Write and evaluate an ...
*Monday, January 26, 2015 at 6:18pm*

**Math**

Don signed an apartment lease for $500 per month. He has a budget of $120 per month for food and $150 for utilities. Please show me how to rite an inequality to show the minimum monthly salary Don needs to earn just for living expenses. How would I graph this answer? Thank you
*Monday, January 26, 2015 at 6:06pm*

**math**

Here's my question: Fireworks are to be launched from a platform at the base of a hill. Using the top of the platform as the origin and taking some measurements, it was determined that the cross-section of the slope of one side of the hill is y=4x-12 If the path of the ...
*Monday, January 26, 2015 at 6:04pm*

**math**

how can you rename a mixed number to help you subtract
*Monday, January 26, 2015 at 5:49pm*

**Math**

Tamara texted a photo of a dolphin to 5 friends. She asked each of her 5 friends to text the photo to 5 more friends. The photo chain continued with each person texting the photo to 5 more friends. How many photos of the dolphin will be texted after 4 rounds? Write and ...
*Monday, January 26, 2015 at 5:36pm*

**Math**

I can't figure out how to solve this math problem, please help. 1.4 divided by 36.96
*Monday, January 26, 2015 at 5:32pm*

**math**

Here's my question: Fireworks are to be launched from a platform at the base of a hill. Using the top of the platform as the origin and taking some measurements, it was determined that the cross-section of the slope of one side of the hill is y=4x-12 If the path of the ...
*Monday, January 26, 2015 at 5:24pm*

**math**

Here's my question: Determine if each system has one, two, or no solutions. (Show your work - 3 marks each) a)y=2x^2-2x+1 and y=3x-5 b)y=x^2+3x-16 and y=-x^2-8x-18 Here's my work on the question: a) x=(-b plus/minus sign (square root b^2-4ac)/(2a) x=(--2 plus/minus ...
*Monday, January 26, 2015 at 5:17pm*

**Math**

Tamera texted a photo of a dolphin to 5 friends. She asked each of her 5 friends. She asked each of her 5 friends to text it to 5 more friends. The photo chain continued with each person texting the photo to 5 more friends. How many photos of the dolphin will be texted after 4...
*Monday, January 26, 2015 at 5:05pm*

**math**

Solve for ALL values of x, where 0<x<2Pi. (should be greater than or equal to)
*Monday, January 26, 2015 at 4:50pm*

**math**

Solve sec to the power of 2 times x minus 1 = 3, x such that [0,2pi).
*Monday, January 26, 2015 at 4:34pm*

**math**

Mrs. Meager drew a quadrilateral on the board. It had two sets of parallel side and no right angles. All four sides were the same length. What did Mrs. Meager draw?
*Monday, January 26, 2015 at 4:32pm*

**Math**

Hello again! Here's another question. 1. The table shows the height of a plant as it grows. What equation in slope-intercept form gives the plant's height at anytime? Months Height 2 8 4 15 6 22 8 29 A. y=(7/2)x+1 B. y=(7/2)x+8 C. y=(7)x+1 D. y=(y)x+8 This question has...
*Monday, January 26, 2015 at 4:32pm*

**Math**

Jasmin is cutting a ribbon into equal sized pieces. If she has 5 feet if ribbon , how many whole pieces 5/6 feet in length can she make?
*Monday, January 26, 2015 at 4:29pm*

**Math**

The domain of y=the square root of bx to the power of two -2 is undefined, which of the following best describes the value of 'b'? a)b is less than or equal to 0 b)b<0 c)b=0 d)b is greater than or equal to 0
*Monday, January 26, 2015 at 4:23pm*

**Math-urgent-mid term exam review question**

Please help me simplify. I keep getting some weird answer. 3x^2(4x^3-2x^2+6x)-(x^5+5x^4-4x^3)+7x^5
*Monday, January 26, 2015 at 4:22pm*

**math**

Don signed an apartment lease for &500 per month. his has a budget of $120 per month for food and $150 for utilities. Write an inequality to show the minimum monthly salary Don needs to earn just for living expenses. graph your answer.
*Monday, January 26, 2015 at 4:22pm*

**Math**

What are the domain and range for 2(y-1)= - the square root of 1/3x-6
*Monday, January 26, 2015 at 4:13pm*

**Math**

A gift shop buys greeting cards at $3.50 each, and sells them at an 80% markup. At what price does the gift shop sell each greeting card?
*Monday, January 26, 2015 at 4:02pm*

**math **

For the pairs of lines defined by the following equations indicate with an "I" if they are identical, a "P" if they are distinct but parallel, an "N" (for "normal") if they are perpendicular, and a "G" (for "general"...
*Monday, January 26, 2015 at 3:59pm*

**Math**

Hi i need help on this equation. 5x^2-3x+9 when x= -11/5
*Monday, January 26, 2015 at 3:54pm*

**Math**

A fireman is standing 25 m due west of the burning building. If the angle of elevation of the ladder is 51°, how long is his ladder?
*Monday, January 26, 2015 at 3:20pm*

**math**

A peanut manufacturing company pays $0.02 per square inch of label used on its cylindrical peanut containers. Each container has a radius of 1.5 inches and a height of 2.5 inches. If the label covers the lateral area of the container, how much would it cost to produce 150,000 ...
*Monday, January 26, 2015 at 3:14pm*

**math **

Find a real number, k, such that the line −18x+ky+15=0 has y-intercept −16.
*Monday, January 26, 2015 at 3:09pm*

**math **

The radiator in a car is filled with a solution of 70 per cent antifreeze and 30 per cent water. The manufacturer of the antifreeze suggests that for summer driving, optimal cooling of the engine is obtained with only 50 per cent antifreeze. If the capacity of the raditor is 4...
*Monday, January 26, 2015 at 3:08pm*

**Math **

Your weekly paycheck is 30 percent less than your coworker's. Your two paychecks total 695. Find the amount of each paycheck. Your coworker's is : and yours is .
*Monday, January 26, 2015 at 2:56pm*

**Math**

Suppose U={1,2,3,4,5,6,7,8}is the universal set and P={1,2,3,4}. What is P? A.{5,6,7,8} B.{1,2,3,4,5,6,78} C.{1,2,3,4} D. Cannot be determined. I think it's either B or D. Please correct me if I am wrong. Thank you!
*Monday, January 26, 2015 at 2:51pm*

**math**

Fundi, Halima and Gitonga are employed in a firm. Fundi's monthly salary is $50 more than that of Gitonga. Halima’s monthly salary is $90 more than half of the total amount earned by Fundi and Gitonga. If Fundi's salary is $n, write the equation that represents ...
*Monday, January 26, 2015 at 2:40pm*

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