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January 24, 2015

Homework Help: Math

Branches of Math

Recent Math Questions

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7th grade math
Can you check the following? 10. A store pays $10 for a bracelet, and the markup is 115%. A customer will also pay 5 1/2% sales tax. What will be the total cost of the bracelet to nearest cent? t = 1.15 x 10 t = $11.5 (markup price) t = $10 + 11.5 t = $21.50 (cost of bracelet ...
Friday, January 16, 2015 at 11:10pm

Math
Evaluate the difference quotient for the given function. Simplify your answer. f(x)=1/x, (f(x)-f(a))/(x-a)
Friday, January 16, 2015 at 9:49pm

Math
Find an expression for the function whose graph is the given curve. The top half of the circle x^2+(y-4)^2=4
Friday, January 16, 2015 at 9:47pm

Math
A Norman window has the shape of a rectangle surmounted by a semicircle. If the perimeter of the window is 26 ft, express the area A of the window as a function of the width x of the window.
Friday, January 16, 2015 at 9:42pm

Math to Ms.Sue (urgent )
11.   Lorenzo has a checkbook balance of $118.00. He writes two checks, one for $9.00 and one for $84.25. He then deposits $95.00. Finally, he uses his calculator to determine his new balance. Which one of the following series represents the correct order in which he...
Friday, January 16, 2015 at 9:19pm

math
Good evening. I do not know how to solve this kind of problem. Could someone help me. Find both x-intercept and the y-intercept of the line given by the equation for 2.4x+2.9y+6.4=0 Thank you for your kindness.
Friday, January 16, 2015 at 8:56pm

Math to Ms.Sue
Ms.Sue may you please check my answers down below?
Friday, January 16, 2015 at 8:41pm

Math
Kelly and Sally both set off at 8 :30 am for Town P, 180 km away. Sally arrived at 100:30 am, ahead of Kelly. If Kelly traveled at a speed which was 10 km/h slower than Sally, the Kelly would have arrived in Town P at ________ PM.
Friday, January 16, 2015 at 8:30pm

Math
Peter and Paul are heading towards the same destination 25 km away. Peter walks at 5 km/h while paul cycles 4 times as faster. If both start off from the same place at the same time, Paul will arrive _______ hours earlier than Peter. Express your answer to the nearest hundredths.
Friday, January 16, 2015 at 8:28pm

Math
The speed of sound in air at sea level at 32 degrees Fahrenheit is 1088 ft/s. If that represents only 22.04% of the speed of sound in ice-cold water, what is the speed of sound in ice-cold water, to the nearest whole number? what i did: 22.04/100 = 32/x i set up this ...
Friday, January 16, 2015 at 7:12pm

Math
Estimate 12 1/2% of 57
Friday, January 16, 2015 at 7:09pm

math
how many positive whole numbers smaller than 2003 have 2 as their first digit and 1 as their last digit
Friday, January 16, 2015 at 7:07pm

Math to Ms.Sue
1.   The Hamilton Brush Company issued 2,500 shares of common stock worth $100,000.00 total. What is the par value of each share?      A. $25.00 B. $400.00 C. $250.00 D. $40.00 My choice is either A C or D? I divided 100,...
Friday, January 16, 2015 at 6:50pm

Math
you must cover the entire bathroom floor with tiles. each tile measures 1 ft. x 1 ft. You will need an extra 5% of tiles to account for waste. How many tiles will you need to purchase for the project? The floor measures 5ft. x 7ft.
Friday, January 16, 2015 at 6:32pm

math proportional relationships
Help me please I am stuck on these proportional relationships. I have 10 of them I can not figure out. I have tried over and over again and can not seem to understand them is there a way I can upload them here for help.
Friday, January 16, 2015 at 6:17pm

Math
Given that a cylinder has a volume of 1200cm^3, what is the volume of a cone that has the same height and same radius as the cylinder? explain your reasoning
Friday, January 16, 2015 at 6:09pm

math
you must apply two coats of paint to the walls of the bathroom. the door and the window will not be painted. determine the total area to be painted (accurate to 5 decimals) and how many cans of paint will you need to purchase if one can covers 100 ft^2? you cannot purchase ...
Friday, January 16, 2015 at 6:03pm

Math
a bathroom floor is covered by 15 tiles. each tile measures 18 in. by 18 in. how many floor tiles measuring 6 in. by 6 in. would be needed to cover the same area?
Friday, January 16, 2015 at 5:54pm

math
A square + b square
Friday, January 16, 2015 at 5:30pm

math
Michaela makes original stationary to give away as gifts. She likes to put a small bow in the corner of each card. She purchased a piece of ribbon that was 3 1/4 ft long. She can make each bow out of 1/3 ft of ribbon. Which equation would be used to show how many bows she can ...
Friday, January 16, 2015 at 3:58pm

math
What is 10/21x 12/1y + -3
Friday, January 16, 2015 at 3:01pm

math
Sin theta equals 5/12 in quadrant, find the exact value of cos 2theta. I'm not sure how to solve this question, I need some help.
Friday, January 16, 2015 at 1:47pm

math
john calls his dad every 3 days. Katie calls every 4 days. Jamie calls every 6 days. once in every ________ days, all three will call on the same day.
Friday, January 16, 2015 at 1:45pm

math help
1. 5/3+(-1/5) a. -22/5 b. -22/15 c. 22/15** d. 28/15 2. Which property is illustrated by the statement? (3+2.8)+5=3+(2.8+5) a. Commutative Property of Addition b. Commutative Property of Multiplication c. Inverse Property of Multiplication d. Associative Property of Addition **
Friday, January 16, 2015 at 1:23pm

Math
Miguel is 5 feet 10 inches tall. On a sunny day he casts a shadow 4 feet 2 inches long. At the same time, a nearby electric tower casts a shadow 8 feet 9 inches long. How tall is the tower? How do I set this up into ratios to figure out the tower height?
Friday, January 16, 2015 at 11:39am

math
rodeo performer spins a lasso in a circle perpendicular to the ground. the circle has a diameter of 118cm. she starts with the knot at the lowest point which is at 90 cm above the ground, she spins the lasso and .5 seconds later the knot is at the highest point. 1.what is the ...
Friday, January 16, 2015 at 10:11am

Math/physics
This is my last problem. Please help! A motorcycle rider starts out on top of a ramp 10 m high and then rides down and jumps the motorcycle when he comes to the end of the ramp (like evil knivel). The rider is at the peak of his jump at 5 m. How fast is the motorcycle going ...
Friday, January 16, 2015 at 9:16am

MATH
The length of a rectangle is 13 inches greater than its width,its perimeter is 8 feet.Find its dimension
Friday, January 16, 2015 at 7:25am

Math, Quadratic Functions, Max/Min Word Problems
Two numbers have a sum of 72. What is their product if it is a maximum?
Friday, January 16, 2015 at 3:29am

Math, Quadratic Functions
Eighty metres of fencing are available to enclose a rectangular play area. Determine the dimensions that will enclosed the maximum area. What is the maximum area?
Friday, January 16, 2015 at 3:06am

Math
Suraya has x apples and 8 oranges.How many apples and oranges does Suraya have altogether?Give your answer in terms of x.
Friday, January 16, 2015 at 1:21am

MATH
a rodeo performer spins a lasso in a circle perpendicular to the ground. the circle has a diameter of 118cm. she starts with the knot at the lowest point which is at 90 cm above the ground, she spins the lasso and .5 seconds later the knot is at the highest point. 1.what is ...
Friday, January 16, 2015 at 1:03am

Math
A blue rope is three times as long as a red rope. A green rope is 5 times as long as the blue rope. If the total length lf the three ropes is 508.26 meters, what is the length of the blue rope?
Friday, January 16, 2015 at 1:02am

math(5th grade)
sixteen teams compete in a single elimination basketball tournament (one loss and you're out). How many games must be played to determine a champion?
Friday, January 16, 2015 at 12:56am

Math
Matthew used 1/5 of a box of flour for cooking and ¾ of the remainder to make bread. The rest of the flour was packed equally into 5 containers. What fraction of the total amount of flour was in each container?
Thursday, January 15, 2015 at 9:47pm

Math
Can someone please help me set this up. I didn't quite understand how to do this today. Before leaving Earth, the mass of an astronaut is measured to be 60kg. The astronaut lands on the Moon and measures the acceleration of gravity to be 1.6 m/s2(squared). What would the ...
Thursday, January 15, 2015 at 9:46pm

Math
The length of the side QR of a triangle PQR is 14.5cm <PQR=71 <QRP=57,find the length of the side s PR and PQ
Thursday, January 15, 2015 at 9:32pm

MATH
Alexis separated her pictures into 3 piles. Each pile contained 9 pictures. How many pictures did she have in all? Write and solve equation. Answer to my problem: 27=9p p=3
Thursday, January 15, 2015 at 9:28pm

Math
I'm less than a hundred, the sum of my digits 17, I am a even number
Thursday, January 15, 2015 at 9:20pm

6TH GRADE MATH
Write an equation you can use to find the length of the rectangle. area=72 m^2. 8m=length xm=width My equation is 8x=72 Am I correct?
Thursday, January 15, 2015 at 9:10pm

math
just a question i have about solving indirect measurements. when you set up your ratios do you cross multiply and then solve for x by dividing?
Thursday, January 15, 2015 at 8:55pm

Algebra Help
You are going to write a fairy tale! Your story should include all of the standard elements of fairy tales. Begins “Once upon a time … ” Animals can act like humans. Involves magical items or helpers. Ends “ … happily ever after.” Your story must ...
Thursday, January 15, 2015 at 8:42pm

Math
1. A bag contains red, blue, green, and yellow marbles. Seth takes a marble from the bag without looking, records the color of the marble, and then puts the marble back in the bag. He repeats the process until he has recorded the colors of 35 marbles. The chart below shows the...
Thursday, January 15, 2015 at 8:42pm

math
a rectangular room is 42ft wide by 69 feet long. On a blueprint, the room is 14" wide. How long os the room on the blueprint. I am totally lost. How do i even set this up to solve.
Thursday, January 15, 2015 at 8:41pm

Math
Diagram of a triangle PQR when QR is 14.5 <PQR=71 <QPR=57,find the lengthr of PR and PQ
Thursday, January 15, 2015 at 8:33pm

Math
In Mrs. Smith's Kindergarten there are 20 students. The number of girls is 4 less than the number of boys. How many girls and how many boys are there
Thursday, January 15, 2015 at 8:07pm

Algebra
You are going to write a fairy tale! Your story should include all of the standard elements of fairy tales. Begins “Once upon a time … ” Animals can act like humans. Involves magical items or helpers. Ends “ … happily ever after.” Your story must ...
Thursday, January 15, 2015 at 7:57pm

Math
On a map 3/6 inch represents 60 kilometers. Distance A to B is 4 5/8 inches. Distance C to D is 5 3/5 inches. Distance E to F is 9 5/6 inches. What is the number of kilometers between A and B? What is the number of kilometers between C and D? What is the distance between E and...
Thursday, January 15, 2015 at 7:55pm

Math
A music store sells tapes for $10 and XDS for $15. Someone buys 5 items in this store and pays $60 How many of these items were tapes and how many were CDS? x=tapes and Y=CDS Are the two equations x+y=60 and 10x+15y=60?
Thursday, January 15, 2015 at 7:49pm

math
What do the lines making a circle around the low-pressure area indicate? 1.The values cannot be added because one is measuring area and the other is measuring volume. 2.The values can be added without making a conversion of units because they both measure area. * 3.The values ...
Thursday, January 15, 2015 at 7:35pm

math
Bella spent 4/7 of her money on a dictionary and 3 identical books. She spent 1/6 of the remainder on a journal that cost $7. How much did she spend on the dictionary and 3 books? If 3/8 of the cost of the dictionary was the same as 1/2 of the total cost of 3 books, how much ...
Thursday, January 15, 2015 at 7:20pm

Math
I need the Awnser for 1,221 divided by 3 can any one help?😕 my child is having truoble
Thursday, January 15, 2015 at 7:12pm

math
a recent survey was conducted on 6 grade students. Of those surveyed, 180 of the students prefered basketball over football. if the 180 students was 5/8 of the total students surveyed, how many total students were surveyed? write an equation to model this situation and then solve
Thursday, January 15, 2015 at 7:01pm

math
The graph of a reciprocal function of the form f(x)=1/ax+b where a is not equal to 0 and b is not equal to 0. Which is the equation of the original function f (x)? a)y=5.25x-2 b)y=-5.25x+2 c)y=-5.25x-2 d)y=5.25x+2
Thursday, January 15, 2015 at 6:32pm

Math
When a tire is labeled "185/70/14" that means it is 185 mm wide, the sidewall height (from the rim to the road) is 70% of its width, and the wheel has a diameter of 14 in. What is the tire's sidewall height?
Thursday, January 15, 2015 at 6:30pm

Math
You have some quarters and some nickels in your pocket in total you have 7 coins and together they are worth 95 cents how many nickels and how many are quarters? I know the equations will have something to do with the 7 couns and they are worth 95 cents all together Is one of ...
Thursday, January 15, 2015 at 6:20pm

math indirect measurement
traingle LMN ~ triangle TUV How long is segment LN and how long is segment UV? On triangle LMN LM=15 MN=27 On triangle TUV TU=10 TV=20 Sides LM & TU are congruent on each triangle Sides MN & UV are congruent Sides LN & TV are congruent I dont understand how to find the missing...
Thursday, January 15, 2015 at 6:17pm

How conceps develops
As a math teacher, Mrs. Wright has high expectations for all of her students. However, she also provides a lot of support for all of her students. Mrs. Wright is employing which of the following Principles of School Mathematics? A. Technology B. Learning C. Equity D. ...
Thursday, January 15, 2015 at 6:13pm

math/science
the melting point of the element bromine is about 19 grades F this is about 57 grades F more than the melting point of mercury. What is the melting point of mercury?
Thursday, January 15, 2015 at 6:11pm

how concepts develop
Which of the following is the crux of the interrelationship between mathematics and science? A. About half of the basic math concepts are related to science concepts. B. The basic concepts of mathematics are the basic process skills of science. C. Basic mathematics process ...
Thursday, January 15, 2015 at 6:10pm

math
how many cubes will fill a box made from this pattern? how do i get that anwser to questions like that?
Thursday, January 15, 2015 at 6:04pm

math
can someone please how to do this problem. Find y-intercept y=3.9x-4.2 I am very confused even how to start it. Thank you
Thursday, January 15, 2015 at 6:03pm

Math
Find without using tables the values of Cosx and Sinx when Cos 2x is: 1/8 , 7/25 ,-119/169
Thursday, January 15, 2015 at 5:56pm

Help with math
Explain how you could write 35% as the sum of two benchmark percents or as a multiple of a percent.
Thursday, January 15, 2015 at 5:56pm

Math
a store sells sweaters for $40 each and jeans for $20 maria buys 5 pieces of clothing ( some jeams and some sweaters ) and pays $160, how many sweaters and how many jeans does she buy
Thursday, January 15, 2015 at 5:56pm

math
what is the answer for 1/4+1/3+3/12=
Thursday, January 15, 2015 at 5:53pm

Math
Use the distributive property to express each sum with the GCF factored out 32+56
Thursday, January 15, 2015 at 5:05pm

MATH
Carter left Town A at noon, driving toward Town B at an average speed of 50 mph. At 12:30 P.M., Max headed from Town B to Town A along the same road. At 3 P.M., they met each other along the way, and Carter realized that he had completed 60% of his journey. A:How far was Town ...
Thursday, January 15, 2015 at 5:04pm

Math
Keith spent 60% of his birthday money at the game store. If he spent $36 at the game store, how much money did Keith receive for his birthday?
Thursday, January 15, 2015 at 4:50pm

Math- Geography
Oncologist use similar triangles in radiation treatment. In order to avoid creating "hot spots" on a patient's spinal cord, doctors must determine where the radiation rays will hit.The known distance from the ray to the patients back is 100 cm. The known base of ...
Thursday, January 15, 2015 at 4:37pm

Math
Use the distributive property to express each sum with the GCF factored out. 32+56
Thursday, January 15, 2015 at 4:34pm

math
he pie chart below shows how the total annual income for a certain family is spent. If the amount budgeted for Housing and Insurance combined is 42,000, what is the total family income? there is saving 8%, food 19%, clothing 18%, auto 12%, entertainment 13% . Do I add them ...
Thursday, January 15, 2015 at 4:33pm

Math
I might annoy you with this question but does any body know the question I posted below? This is my last question for today and I can't seem to figure it out.
Thursday, January 15, 2015 at 4:31pm

math
if Dave is 21 years old 2014 how how old will he be in 2020
Thursday, January 15, 2015 at 4:21pm

Math help
19.   Jim paddles from one shore of a lake three miles wide at 4 mph, and John paddles from the opposite shore at 5 mph. How long will they travel before they meet?       A. 20 minutes B. 27 minutes C. 1 hour, 24 minutes D...
Thursday, January 15, 2015 at 4:11pm

math
Plz help me????? Carter left Town A at noon, driving toward Town B at an average speed of 50 mph. At 12:30 P.M., Max headed from Town B to Town A along the same road. At 3 P.M., they met each other along the way, and Carter realized that he had completed 60% of his journey. A...
Thursday, January 15, 2015 at 4:09pm

Math
My divisor is 9, I am greater than 7 times 9, I am less than 8 times 9,my remainder is 7,what dividend am I ?
Thursday, January 15, 2015 at 3:43pm

Math
Solve the following equation 43=j-9
Thursday, January 15, 2015 at 3:42pm

Math to Ms.Sue
 Mark for review (Will be highlighted on the review page) 19.   Jim paddles from one shore of a lake three miles wide at 4 mph, and John paddles from the opposite shore at 5 mph. How long will they travel before they meet?      A. ...
Thursday, January 15, 2015 at 3:27pm

Math
Keith spent 60% of his birthday money at Game Stop. If he spent $36 at Game Stop, how much money did Keith receive for his birthday?
Thursday, January 15, 2015 at 3:23pm

Math
Use the distributive property to express each sum with the GCF factored out. 32+56
Thursday, January 15, 2015 at 3:19pm

Math
Please Help!!!! Christine borrowed $8000 at a rate of 11%, compounded semiannually. Assuming she makes no payments, how much will she owe after 8 years?
Thursday, January 15, 2015 at 3:11pm

math
Please on this question I know I divide but do I do them one at a time or all together. Hamster is 8%, fish 12% and dogs are 23%. I added them together and got 0.43%. The question is- The citizens of a certain community were asked to choose their favorite pet. The pie chart ...
Thursday, January 15, 2015 at 2:44pm

MATH
George saves 18% of his total gross weekly earnings from his 2 part-time jobs. He earns $6.25 per hour from one part-time job and $7.50 per hour from the other part-time job. George works a total of 40 hours between the two jobs each week. What additional information is needed...
Thursday, January 15, 2015 at 2:31pm

Math to Ms.Sue
Ms.Sue can you check my last two questions below. I appreciate your help and everyone else's.
Thursday, January 15, 2015 at 2:05pm

math
Four corners are cut from a rectangular piece of cardboard that measures 5 ft by 3 ft. The cuts are x feet from the corners, as shown in the figure below. After the cuts are made, the sides of the rectangle are folded to form an open box. The area of the bottom of the box is ...
Thursday, January 15, 2015 at 1:34pm

math
If the wheel of a bicycle has a diameter of 60cm, calculate how far a cyclist will have travelled after the wheel has rotated 100 times.
Thursday, January 15, 2015 at 1:30pm

Math
I have figured out x to be 2 for this system of equations but now I need help on determining the solution of the equations which are y=4x and y=2x^2. Can you please help me!
Thursday, January 15, 2015 at 1:20pm

Math to Mrs.Sue
18.   Dawn Lingua bought three yards of cloth to make some curtains. The cloth was on sale for $2.25 per yard. How much did Dawn pay for the cloth if the sales tax was 5%?      A. $7.25 B. $7.09 C. $2.36 D. $8.07 I am ...
Thursday, January 15, 2015 at 1:14pm

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)
Thursday, January 15, 2015 at 1:06pm

Math
For what value of b will the line y=-2x+b be tangent to the parabola y=3x^2+4x-1? Show work-2 marks
Thursday, January 15, 2015 at 12:50pm

Math
Powerboattakes30minutes to travel 10miles downstream. The return triptakes50 minutes. What is th speed othe current
Thursday, January 15, 2015 at 12:44pm

Math
Henry Devine bought a new dishwasher for $320. He paid $20 down and made 10 monthly payments of $34. What actual yearly interest rate did Henry pay?      A. 68.75 B. 14.55 C. 34.38 D. 29.09 My answer is B.
Thursday, January 15, 2015 at 11:16am

Math
This regular octagon has a side length 15.0cm. Determine the distance from one vertex to the opposite vertex, measured through the centre of the octagon. Give your answer to to the nearest tenth of a centimeter.
Thursday, January 15, 2015 at 11:12am

math
on Tuesday, elena completed 20 of her math homework in 36 minutes. At that same rate, how long will it take her to complete 35 items for wendy's math home work
Thursday, January 15, 2015 at 10:53am

Math
A circular frame that is three inches wide surrounds the mirror with 12 inch diameter. What is the combined area in square inches?
Thursday, January 15, 2015 at 10:30am

math
Mitch used 25% of his monthly savings to buy a guitar if the cost of the guitar was $96 how much did he save that month
Thursday, January 15, 2015 at 8:44am

MAth Igcse
The angle of elevation of the top of a tower is 27 degrees from point A due east of it. The angle of elevation of the top of the tower is 11 degrees from another point B due south of the tower. Find the height of the tower if the distance AB is 40m.
Thursday, January 15, 2015 at 8:05am

math
a rectangular tank 10inches by 8 inches by 4 inches is filled with water if all of the water is to be transferred to cube shaped tanks each one 3 inches on a side how many of these smaller tanks are needed?
Thursday, January 15, 2015 at 7:57am

math
cost of levelling of circular ground @ 25 paisa/square meter is 2500.Help me find the radius of this ground
Thursday, January 15, 2015 at 6:32am

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