Thursday

March 5, 2015

March 5, 2015

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**math**

Solve for X and Y: 2^x=8^1+y And (x+2y)(x-y)=0
*Thursday, March 5, 2015 at 8:24am*

**math**

A cyclist covers his outward journey downhill at 24mph. His return journey, over exactly the same distance uphill, is covered at only 12mph. What is the cyclist's average speed over the entire journey?
*Thursday, March 5, 2015 at 5:21am*

**math**

A rectangle measuring 7cm by 4cm is enlarged by a ratio of 2:1.what is the area of the enlarged rectangle.
*Thursday, March 5, 2015 at 1:46am*

**Math **

Two complementary angles, A and B, have measures in the ratio of 7 to 23, respectively. What is the ratio of the measure of the complement of angle A to the measure of the complement of angle B? Express your answer as a common fraction.
*Wednesday, March 4, 2015 at 11:34pm*

**MATH**

I need help with a word problem. How many halves are there in two-fifths? 2/5 ÷ 1/2 = 4/5, so there are 2 halves is this correct
*Wednesday, March 4, 2015 at 11:20pm*

**Math**

Can anyone help me find links or sites about sum and product of the roots of quadratic equation solving real life problem involving similarity and proportion?
*Wednesday, March 4, 2015 at 10:14pm*

**math**

Two towns P and Q are 400 km apart. A bus left for P and Q. It stopped at Q for one hour and then started the return to P. one hour after the departure of the bus from P, a trail also heading for Q left P. the trailer met the returning bus ¾ of the way from P to Q. they...
*Wednesday, March 4, 2015 at 10:13pm*

**math**

For the following scenario, develop an equation and a set of 5 ordered pairs for equation: 1. the amount a sales person earns is a flat rate plus commission. 2. the volume of fuel in a snowmobiles tank related the distance travelled. 3. the cost of a hotel room is a flat fee ...
*Wednesday, March 4, 2015 at 10:11pm*

**math**

which sets of ordered pairs represents a linear relationship? if the relationship is linear, calculate the rate of change of the dependent variable. 1. (-2,4),(-1,1),(0,0),(1,1),(2,4),(3,9) 2. (5,13),(6,15),(7,17),(8,19),(9,21),(10,23) 3. (1,-14),(3,-5),(6,4),(9,13),(12...
*Wednesday, March 4, 2015 at 10:09pm*

**math**

Give that x is angle in the first quadrant such that 8sin 2x + 2cosx – 5 = 0 Find: cosx tanx
*Wednesday, March 4, 2015 at 9:53pm*

**MATH**

Please I need help with a fraction word problem. Peter and Eric bought a large pizza that has 12 slices. John and Eric ate all the pizza. If John ate 4/6 slices, how much did Eric eat? Who ate more pizza? My answer is Eric ate 4/12 of the pizza and John ate more than Eric. Am ...
*Wednesday, March 4, 2015 at 9:38pm*

**Math**

Rachel planted a flower garden. She planted roses in 1/4 of the garden and 1/3 of the roses were pink. She planted tulips in 1/3 of the garden and 1/3 of the tulips were pink. How many roses were there in Rachel's garden?
*Wednesday, March 4, 2015 at 9:33pm*

**Math**

T'Mara knew that her trip would take about 7 hours. If she left at half past nine in the morning,around what time should she arrive
*Wednesday, March 4, 2015 at 9:13pm*

**Math (advice)**

So in my calculus class we learned about implicit differentiation today. The professor would stop and ask if we had any questions, which was nice. I didn't ask any questions though, because I don't really like to ask questions during class. I didn't really get ...
*Wednesday, March 4, 2015 at 9:09pm*

**Math 6th grade**

Explain what a neutral field is.
*Wednesday, March 4, 2015 at 9:03pm*

**6th grade math**

Use the scale 1/4 = 9 ft to represent a 27 ft square
*Wednesday, March 4, 2015 at 8:50pm*

**math**

If a tire is 68 inches around what would the radius of the tire be
*Wednesday, March 4, 2015 at 8:43pm*

**Math**

Tricia travels 45 miles in one hour .at this rate,how long would it take her to travel 225 miles
*Wednesday, March 4, 2015 at 8:35pm*

**math**

The directions for lemonade say to put 2 cups of the liquid concentrate into 1 gallon of water. If Olivia only wants to make 1 pint of lemonade, how many fluid ounces of concentrate should she use? Explain.
*Wednesday, March 4, 2015 at 8:29pm*

**Math**

Good day! Can anyone give links about the sum and product of roots of quadratic equation solving real-life problem involving similarity and proportion? I need it as soon as possible. The more links you'll give, the more I'll be grateful to you. Thanks!
*Wednesday, March 4, 2015 at 8:25pm*

**Math**

Karen collects 6/7 qt of rainwater. She uses 1/2 of the water to clean her bicycle and uses the remaining water equally for 3 houseplants. What volume of water does she use for each houseplant ?
*Wednesday, March 4, 2015 at 7:47pm*

**math**

18*5 1/16=
*Wednesday, March 4, 2015 at 7:10pm*

**math**

5*5 1/16=
*Wednesday, March 4, 2015 at 7:10pm*

**math**

A rectangular tank measures 30cm by 15 cm by 20 cm. It contains water to a depth of 15 cm. How many metal cubes of edge 5 cm need to be placed in the water to raise the water level to the brim of the tank?
*Wednesday, March 4, 2015 at 7:03pm*

**math**

Is sin function continuous?
*Wednesday, March 4, 2015 at 7:00pm*

**Math**

Solve each system by using the elimination method. Make sure to write your answer in (x,y) form. 0.2x - 0.5y = -27.8 0.3x + 0.4y = 68.7
*Wednesday, March 4, 2015 at 6:52pm*

**math**

Critique Reasoning Alex decides that 21 divided by 3 = 7 is NOT a true equation. Is Alex correct? Explain
*Wednesday, March 4, 2015 at 6:46pm*

**math**

Nokia school day last 7 hours and 20 minutes how many minutes does Nikki's school day last explain how you found the answer
*Wednesday, March 4, 2015 at 6:18pm*

**Math**

1. Mailey mother brought her a pet hamster. She is keeping Montey, the hamster, in a box with a length of 8.3 in.,a width of 6in.,and a height of 5,25in. Mailey plans on covering Montey's box with contact paper. How many square inches of contact paper is needed to ...
*Wednesday, March 4, 2015 at 6:09pm*

**math**

Solve this.. ◻ ➕ ◻ ➕ ◻=30 Fill the boxes using (1, 3, 5, 7, 9, 11, 13, 15)
*Wednesday, March 4, 2015 at 5:58pm*

**math**

Select the sentence that is correctly completes the sentence below. to convert from a smaller unit
*Wednesday, March 4, 2015 at 5:56pm*

**Math**

I can't unscramble this. GONUENRIC It deals with Geometry.
*Wednesday, March 4, 2015 at 5:55pm*

**math**

roy has 11 model cars that are all red or black. He has 3 more red cars than black cars. How many black cars does he have?
*Wednesday, March 4, 2015 at 5:40pm*

**Math**

A ship sailing west toward shore, and there are tow ports on the horizon. The ports are 17 miles apart, and from the ship's vantage point, point A is 30 deg North of straight ahead and port B is 80 deg South of straight ahead. Approximately how much farther is it fro the ...
*Wednesday, March 4, 2015 at 5:33pm*

**Math**

Person A starts walking SW froma point at a speed of 13m/s. Ten seconds later person B starts walking from the same point and travels east at 10m/s. After person B have been walking 30 seconds, approximately how far apart are the two?
*Wednesday, March 4, 2015 at 5:30pm*

**math**

tow people begin walking from the same point at the same time. One walks due south at 3 mph and the other walks southeast at 4 mph. Approximately how far apart are the two after one hour walking?
*Wednesday, March 4, 2015 at 5:27pm*

**math**

A square tabletop is 5 feet long on each side. Kevin wants to tile the tabletop. how much tile does he need to cover the tabletop.
*Wednesday, March 4, 2015 at 5:21pm*

**math**

Solve this.. ◻ ➕ ◻ ➕ ◻=30 Fill the boxes using (1, 3, 5, 7, 9, 11, 13, 15)
*Wednesday, March 4, 2015 at 5:08pm*

**math**

Find the equation of the circle with center on the line x-2y+2=0 and which touchesboth positivex and positive y axes.
*Wednesday, March 4, 2015 at 4:32pm*

**Math**

One and seven eights is close to______ inches A.1. B. 2. C. 3
*Wednesday, March 4, 2015 at 4:11pm*

**math**

Garden is 10 1/4 ft long and 6 ft wide, what is the total area?
*Wednesday, March 4, 2015 at 4:11pm*

**math**

When it is assembled, a flute is 28 inches long. The middle piece m is 5 inches less than twice as long as the first piece f. The last piece l is two-thirds as long as the first piece. Find the length of each piece of the flute
*Wednesday, March 4, 2015 at 4:07pm*

**math**

A number of circles touch each ather. The area of the smallest circle is 4n cm^2 and each consecutive circle has area 9/4 times that of the previous one. If the distance AB=665/8. Line AB passes at the centre of the circles. How many circles are there?
*Wednesday, March 4, 2015 at 3:33pm*

**Statistics Help**

Express the confidence interval (0.024, 0.112) in the form of p-hat – E < p < p-hat + E = __< p < __ I don't understand how to perform this formula. Please help I am about to graduate and this is my last class, and I am struggling as I only know basic Math...
*Wednesday, March 4, 2015 at 3:18pm*

** Math**

Can someone please help. How log will it take you to save $100,000 if you start saving 1597 every 3 months starting today? Assume and interest rate of 6% compounded quarterly. Business Calculator py/cy= 4 I=6% fv= 100,000 1597= PMT BGN is on
*Wednesday, March 4, 2015 at 3:18pm*

**math**

how do you create of six values that does not represent a linear relation. All the y-values must increase in value as x increase in value?
*Wednesday, March 4, 2015 at 1:52pm*

**Math Check**

Are my answers correct? Tell whether the system is inconsistent OR dependent. 1.) -7x+6y=-4 14x-12y=8 2.) 3x-y=7 -6x+2y=8 My answers: 1.) inconsistent 2.) Dependent
*Wednesday, March 4, 2015 at 1:32pm*

**statistics/Help Please!!**

In a sample of seven cars, each car was tested for nitrogen-oxide emissions (in grams per mile) and the following results were obtained:0.18, 0.12, 0.05, 0.19, 0.18,0.13, 0.15. Assuming that this sample is representative of the cars in use, construct a 98% confidence interval ...
*Wednesday, March 4, 2015 at 1:10pm*

**math**

what is the function rule? x= -2, -1, 0, 1, 2 y= 9, 4, -1, -6, -11
*Wednesday, March 4, 2015 at 1:03pm*

**math**

develop an equation and a set of 5 ordered pairs for equation: 1. the amount a sales person earns is a flat rate plus commission. 2. the volume of fuel in a snowmobiles tank related the distance travelled. 3. the cost of a hotel room is a flat fee plus a fee per adult ...
*Wednesday, March 4, 2015 at 10:30am*

**math**

the first term of the arithmetic sequence is -37 and the second term is-30 what is the smallest positive term of the sequence?
*Wednesday, March 4, 2015 at 10:30am*

**math**

the first term of the arithmetic sequence is -37 and the second term is-39 what is the smallest positive term of the sequence?
*Wednesday, March 4, 2015 at 10:28am*

**math**

Find D Varation Of D Following Number 2,4,6,8,10,10,12
*Wednesday, March 4, 2015 at 9:11am*

**Math Help**

Are my answers correct? Tell whether the system is inconsistent OR dependent. 1.) -7x+6y=-4 14x-12y=8 2.) 3x-y=7 -6x+2y=8 My answers: 1.) inconsistent 2.) Dependent
*Wednesday, March 4, 2015 at 9:06am*

**Math Check**

Hi! Can someone check my answers? Thanks! Directions: Solve each system by using the elimination method. Make sure to write your answer in (x,y) form. 1.) 3x-5y=2 2x+5y=13 2.) 3x+11y=4 -2x-5y=9 My answers: 1.) (3,7/5) 2.) (-17,5)
*Wednesday, March 4, 2015 at 9:05am*

**math**

Is the only way to check if a set of vectors are linearly indep. is if the det does not equal 0? I have a problem where v1= [1;2;1;-1] v2=[0;2;1;1] v3=[3 1 0 2] but this creates a 3X4 matrix and you can't find the det of this. I am really confused! thanks :D
*Wednesday, March 4, 2015 at 8:53am*

**math**

f(x)=(2x-3) (gof)(x)=4x2-16x+18 g(x)...?
*Wednesday, March 4, 2015 at 8:34am*

**math**

Solve it... [ ] [ ] [ ] = 30 fill the brackets using below numbers ( 1, 3, 5, 7, 9, 11, 13,15 ) you can repeat the numbers... Please help me! Many more people unsucceed to solve it
*Wednesday, March 4, 2015 at 5:23am*

**math**

How many square on a chess board? How to find out it? Please explain....
*Wednesday, March 4, 2015 at 5:14am*

**math 11**

Paula lent Ned $1200 to help him pay for a mountain bike that he desperately wants. She charged him 8%/a simple interest, payable weekly. Ned paid back the loan plus interest, in equal payments over 20 weeks. a) How much interest will Ned have to pay? [2 marks] b) What will ...
*Wednesday, March 4, 2015 at 2:49am*

**math **

May Ling borrowed $2500.00 for vehicle repairs from her parents. She agreed to pay back the loan plus 7.5% simple interest on the $2500 added on in equal monthly payments over the next 6 months. a) How much interest will May Ling have to pay? [2 marks] Monthly rate = ...
*Wednesday, March 4, 2015 at 2:47am*

**3rd garde math**

seth bikes 3 miles in 10 minutes and 30 miles in 100 minutes. How many miles does seth bike in 1000 minutes
*Wednesday, March 4, 2015 at 2:46am*

**math**

rearrange the numbers in a 4 x 4 array so that each row column and diagonal equal 10 using numbers 1-4
*Wednesday, March 4, 2015 at 2:04am*

**Math**

What is the volume of a square glass window with a side length of 1 3/4 ft and a width of .08 ft?
*Wednesday, March 4, 2015 at 1:34am*

**math**

A number of circles touch each ather. The area of the smallest circle is 4picm2 and each consecutive circle has area 9/4 times that of the previous one. If the distance AB=665/8. Line AB passes at the centre of the circles. How many circles are there?
*Wednesday, March 4, 2015 at 12:13am*

**math**

An antique clock takes 5.5 seconds to chime at 3 o'clock. How long does it take to chime at 9 o'clock ? 5.5/2= 2.75x8=22seconds
*Wednesday, March 4, 2015 at 12:01am*

**math**

A number of circles touch each ather. The area of the smallest circle is 4picm2 and each consecutive circle has area 9/4 times that of the previous one. If the distance AB=665/8. Line AB passes at the centre of the circles. How many circles are there?
*Wednesday, March 4, 2015 at 12:01am*

**math **

How do I round this to the nearest ten thousand 1,112,433
*Tuesday, March 3, 2015 at 11:54pm*

**math**

Susie uses 1/2 to help compare 1/3 to 3/5 and to help in comparing 3/7 with 2/3. Explain how 1/2 help determine which fraction is greater in each combination.
*Tuesday, March 3, 2015 at 11:44pm*

**math**

five friends went to a baseball game. three of the friends each bought a ticket for x dollars and a soda for six dollars the other two friends each bough only tickets. write and simplify and expression that represent the amount of money spent
*Tuesday, March 3, 2015 at 11:28pm*

**math**

Tony plans to install a window pane that has a length of 8 inches and a width of 6 inches. He decides that the length has to be reduced by z inches. He says that the new area of the window pane will be 48−z. Is Tony correct? Why or why not? THANK YOU!!!!!
*Tuesday, March 3, 2015 at 10:58pm*

**math**

Janice plans to build a rectangular table top with an area of 60+20r square inches. The width of the table top is 10 inches. What is the length of the table top?. THANK YOU
*Tuesday, March 3, 2015 at 10:48pm*

**math**

Emma's school plans to build a rectangular basketball court with an area of 150+175t square feet. The length of the basketball court is 25 feet.What is the width of the basketball court? Thank you!
*Tuesday, March 3, 2015 at 10:42pm*

**math**

Emma's school plans to build a rectangular basketball court with an area of 150+175t square feet. The length of the basketball court is 25 feet as shown in the following diagram. Thank you!
*Tuesday, March 3, 2015 at 10:35pm*

**Math**

For the first of two basketball games the price of each reserved seat was $1.50,the price of each unreserved seat was 5 cents, and the number of reserved seats sold was 1/25 of the number of unreserved seats sold.If, at a second game, the price of the reserved seats is to be ...
*Tuesday, March 3, 2015 at 10:18pm*

**Math**

Come pleat the table to represent each part of the formula. The data values have been put in ascending order. ---- X, (X, - x) 2 30 ? 32 ? 33 35 49 50 50 71 73 77
*Tuesday, March 3, 2015 at 10:15pm*

**Math **

What is 8 3/4 - 5 5/6 = Is 24 the Denominator for this problem? Show all the work.
*Tuesday, March 3, 2015 at 10:03pm*

**math**

what percent of student perform at the national average. there are 32 kid
*Tuesday, March 3, 2015 at 9:36pm*

**math**

You need at least 5 pounds of potatoes and onions. Potatoes cost $4 per pound and onions cost $2 per pound. You can spend at most $18. a) define the variables b) a system of linear inequalities that represents this situation.
*Tuesday, March 3, 2015 at 9:34pm*

**Math Check**

Can someone check my answers? Thanks! Tell whether the system is inconsistent OR dependent. 1.) -7x+6y=-4 14x-12y=8 2.) 3x-y=7 -6x+2y=8 My answers: 1.) inconsistent 2.) Dependent
*Tuesday, March 3, 2015 at 8:51pm*

**Math**

Solve each system by using the elimination method. Make sure to write your answer in (x,y) form. 1.) 3x-5y=2 2x+5y=13 2.) 3x+11y=4 -2x-5y=9
*Tuesday, March 3, 2015 at 8:50pm*

**math**

bobs monthly phone bill is made up of a 10.00 fee plus $0.05 per min.bobs phone bill for july was 22.00 write an equation to model the situation using m to represent the number of min. solve the bequation to determine the number of phone mins.bob used in july
*Tuesday, March 3, 2015 at 8:49pm*

**math derivatives**

derivative of ln[(1+v)^(1+v)(1-v)^(1-v)] I know my log rules allow me to rewrite this as ln[(1+v)(1+v)+(1-v)(1-v)] but what I do from there i dont know.... Wolfram says it is ln(v+1)-ln(v-1)but i dont know how to get that...
*Tuesday, March 3, 2015 at 8:47pm*

**Math **

What is 13 3/5 - 6 1/4 =? Show me the work please.
*Tuesday, March 3, 2015 at 8:03pm*

**Math**

What is 8 3/4 - 5 5/6 =? Shouldn't the denominator be 24 ? What is this answer please show the work.
*Tuesday, March 3, 2015 at 8:01pm*

**Math**

Which relation is a function? (Points : 1) A.(1, 2), (1, 5), (1, -1), (1, 4)} B. {(8, -1), (2, -1), (3, 8), (2, 5} C. {(-3, 4), (-2, 5), (0, 9), (0, 12)} D. {(7, 12), (1, -5), (3, -10), (2, -5)} Is its C :P?
*Tuesday, March 3, 2015 at 7:56pm*

**Math**

Sara long jump was 10 feet. That is 5/6 foot longer than Tom's long jump. Did Tom jump more or less than 10 feet? I think I have to multiply and so Tom's jump was less by . I think his jump was 8 1/2 feet. Is tis correct?
*Tuesday, March 3, 2015 at 7:53pm*

**math**

emily pays $93 each year to belong to a photography club. next year, the membership fee will increase by 12.5%. emily estimates that the membership will just be under $100 each year after the increase. what is a true statement about emily's estimate? a. her estimate is ...
*Tuesday, March 3, 2015 at 7:44pm*

**math**

I am less than 20 I am an odd number I am the square root of 225 I am
*Tuesday, March 3, 2015 at 7:44pm*

**Math**

Bill plays ball for 9 hours each week. His friend Mark spends as much time playing ball. Who plays more ball? I think I have to divide. So I think Mark plays more ball by 10 4/5 hours. Is this correct? Thank you so very much for your help Ms. Sue.
*Tuesday, March 3, 2015 at 7:32pm*

**math**

8sin^4(x)
*Tuesday, March 3, 2015 at 7:26pm*

**Math**

Hank's fish bowl holds 9/10 gallon of water. It is now 2/3 full. How much water is in the bowl? I subtracted and my answer is 7/30. Is this correct?
*Tuesday, March 3, 2015 at 7:23pm*

**Math**

I can throw a ball 10 1/3 yards. My cousin can throw a ball 13 1/12 yards. How much farther can my cousin throw the ball? I think I have to subtract and my answer is 2 3/4 yards farther. Is this correct?
*Tuesday, March 3, 2015 at 7:18pm*

**Math**

Amy uses 8 cups of flour to make 3 identical loaves of bread.How much flour is in each loaf? I think it is division and I got 2 2/3 cups of flour. Is this correct?
*Tuesday, March 3, 2015 at 7:14pm*

**MATH**

In Mrs.Marshall'd classroom, 6/7 of the students play sports. Of the students who play sports, 4/5 also play as instrument. If there are 35 students in her class, how many play sports and an instrument?
*Tuesday, March 3, 2015 at 7:10pm*

**Math**

Sue's kitten eats 1/12 pound of food everyday. If Sue buys food in 5 pound bags, how many days does one bag of food last? I think I would divide and the answer would be 60 days is this correct?
*Tuesday, March 3, 2015 at 7:10pm*

**math**

At a school camp, 30% of the students were boys. When 87 students left the camp after the second day, half the original number of boys were left behind, and the number of girls decreased by 20%. How many girls were at the camp in the beginning?
*Tuesday, March 3, 2015 at 7:08pm*

**Math**

Find the area of the basketball court. The length of the rectangle is 100m and the radius of the seni-circle is 25m.
*Tuesday, March 3, 2015 at 7:06pm*

**Math**

Bill can ride his bike 7 1/2 miles in a hour. a. How far will he ride in 3 hours? b. How far will he ride in 1/3 of an hour? I think for a. the answer is multiply so it would be 22 1/2 miles and for b. it would be 2 1/2 miles. Is this correct?
*Tuesday, March 3, 2015 at 7:06pm*

**Math**

The area of a rectangular field is given by the trinominal t^2-4t-45. The length of the rectangle is t+5. What is the expression for the width of the field? A) t-9 B) t-5 C) t-11 D) t-7 Can someone please help? Thank you!
*Tuesday, March 3, 2015 at 6:42pm*

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