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April 19, 2014

April 19, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**math**

what are the mean,median,mode, and range of the data set given the altitude of lakes in feet:-11,-28,-17,-25,-28,-39,-6,and -46? A. mean= -25; median= -26.5; mode= -28; range=40 B. mean= -25; median=-40; mode=-26.5; range=28 C. mean= -26.5; median= -25; mode= -28; range=28*** ...
*Saturday, April 12, 2014 at 8:58am*

**math**

Jamal writes the letters K-A-N-S-A-S on cards and then places the cards in a hat. What are the odds against picking an S?
*Tuesday, April 8, 2014 at 5:27pm*

**math**

four angles are put together, forming a straight angle. two of the angles are the same size. the other two angles are also the same size but different from the other two. If one of the angles is 40 degrees, what are the measures of the other three? please explain
*Tuesday, April 8, 2014 at 5:24pm*

**Math**

C = pi * d A = pi * r^2 A = 3.14 * 9^2 A = 254.34 square units
*Tuesday, April 8, 2014 at 5:07pm*

**Math**

If the circumference of a circle is 18 ( pie symbol), what is the area of the circle? Thanks
*Tuesday, April 8, 2014 at 5:04pm*

**3rd grade math**

Imagine a pizza cut into 6 equal pieces. Your brother eats all 6 pieces. He ate the whole darn pizza! 6/6 = 1
*Tuesday, April 8, 2014 at 4:30pm*

**math**

The product of square of a number and the cube of the same number is equal to 32 what is that number
*Tuesday, April 8, 2014 at 4:23pm*

**Math**

6
*Tuesday, April 8, 2014 at 4:22pm*

**3rd grade math**

Explain how you know 6/6 and 1 are equivalent?
*Tuesday, April 8, 2014 at 4:14pm*

**math**

Speed = 65 miles per hour
*Tuesday, April 8, 2014 at 3:58pm*

**math**

A. Substitute the numbers for x and calculate for y. B. Substitute the $62 for y and solve for x.
*Tuesday, April 8, 2014 at 3:53pm*

**Math**

218/245 * 360º = ?
*Tuesday, April 8, 2014 at 3:47pm*

**math**

n + 7p = 5.55 3n + 2p = 12.28 Multiply first equation by 3, then subtract one equation from the other. 3n + 21p = 16.65 19p = 4.37 You should be able to take it from here.
*Tuesday, April 8, 2014 at 3:41pm*

**Math - Check My Answers, Please**

Please help me by checking the following answers for me. 3. A student is attempting to solve the equation below for the variable x. Which of the statements below best applies to the mathematical work shown? Given √(4x-6)=12, I square both sides, so (√4x)^2-6=&#...
*Tuesday, April 8, 2014 at 3:29pm*

**math**

Write an equation for the realartionship. Tell what the variables represent. It takes Li 1 hour to drive 65 miles, 2 hours to dirve 130 miles, and 3 hours to drive 195 miles.
*Tuesday, April 8, 2014 at 3:10pm*

**7th grade math Ms. Sue please**

Im in con nexus too 7th grade :)
*Tuesday, April 8, 2014 at 2:57pm*

**math riddle ALGEBRA WITH PIZZAZZ**

LOL
*Tuesday, April 8, 2014 at 2:54pm*

**Math**

x ^ a * x ^ b = x ^ ( a + b ) 2 ^ 2 * 2 ^ 8 = 2 ^ ( 2 + 8 ) = 2 ^ 10 ( 2.5 * 10 ^ 4 )( 4 * 10 ^ 3 ) = 2.5 * 4 * 10 ^ ( 4 + 3 ) = 10 * 10 ^ 7 = 10 ^ 1 * 10 ^ 7 = 10 ^ ( 1 + 7 ) = 10 ^ 8
*Tuesday, April 8, 2014 at 2:13pm*

**Math**

Thank you, Steve! I really appreciate it. :)
*Tuesday, April 8, 2014 at 2:11pm*

**Math (help)**

what is the length of the radius of the LARGER cone(the LARGER cone has a slant height of 15) when the SMALLER cone has a radius of 8 and a slant height of 12ft ,please help.
*Tuesday, April 8, 2014 at 2:07pm*

**Math**

8 people are going to sit on 6 chairs. Two of them John and Kelly can't sit next to each other. How many ways can you put the people to seats? The answer is 10080, but I can't figure out how to calculate it.
*Tuesday, April 8, 2014 at 2:06pm*

**Math**

Write the expression using a single exponent. 2^2 * 2^8 A. 4^10 B. 2^10 C. 4^16 D. 2^16 Write the expression using scientific notation. (2.5 * 10^4)(4 * 10^3 A. 10 * 10^7 B. 10 * 10^8 C. 1 * 10^8 D. 10 * 10^12
*Tuesday, April 8, 2014 at 2:04pm*

**math multiple choice**

13.75 + [0.6(55,000/200)] = ?
*Tuesday, April 8, 2014 at 1:31pm*

**math multiple choice**

13.75 + 55000(.60/200) = 178.75
*Tuesday, April 8, 2014 at 1:29pm*

**math multiple choice**

. A man pays 60 cents for every 200m3 of gas used, plus a fixed charge of $13.75.How much does he pay when he uses 55 000m3 gas?
*Tuesday, April 8, 2014 at 1:19pm*

**Math**

D
*Tuesday, April 8, 2014 at 12:58pm*

**Math**

In the expression -7x - 5x^2 + 5, what is the coefficient of x? A. 7 B. 5 C. -5 D. -7
*Tuesday, April 8, 2014 at 12:44pm*

**math**

12
*Tuesday, April 8, 2014 at 12:42pm*

**Math**

#2 f? x? I get 5f^2 + 11f - 2 #3 B #4 coefficients are the numbers multiplying the powers of x. So, B the final -3 is not a coefficient; it's just a constant.
*Tuesday, April 8, 2014 at 12:34pm*

**Math**

2. C 3. B 4. I'm not sure.
*Tuesday, April 8, 2014 at 12:30pm*

**Math**

1A what did you get for the others?
*Tuesday, April 8, 2014 at 12:28pm*

**Math**

well, there's algebraic algebraically those are the only words I can think of right off where I can "form the word algebra". Git
*Tuesday, April 8, 2014 at 12:26pm*

**Math**

1. Add or subtract. (4x^2 + 15x -3) - (-3x^2 + 5) A. 7x^2 + 15x - 8 B. x^2 + 12x + 2 C. x^2 + 15x - 8 D. 7x^2 + 8 2. Simplify the polynomial. -3f^2 + 4f - 3 + 8f^2 + 7f + 1 A. 5x^2 - 4x - 2 B. -5x^2 + 8x - 2 C. 5x^2 - 8x + 2 D. -9x^2 - 8x + 2 3. Add or subtract. (2x^2 + 6x + 1...
*Tuesday, April 8, 2014 at 12:20pm*

**Math? Science?**

??
*Tuesday, April 8, 2014 at 12:09pm*

**math**

All are right. :-)
*Tuesday, April 8, 2014 at 12:06pm*

**math**

Activity Boys Girls Total Walk 3 6 Bike 5 3 skateboard 2 1 3. What percentage of the total students chose skateboarding? (1 point) 10% 20% 30% none of these *** 4. What percentage of the boys chose walking? (1 point) 30% **** 45% 25% none of these 5. What percentage of the ...
*Tuesday, April 8, 2014 at 11:49am*

**math**

height/30 = sin 65 height = 30sin65° = .....
*Tuesday, April 8, 2014 at 10:02am*

**math**

if a 30 ft ladder makes a 65 degree angle with the ground, how many fee up the wall will it reach
*Tuesday, April 8, 2014 at 9:35am*

**Math**

The way you worded it , we could form 3 letter words, or 5 letter words, etc. In other words, it becomes a "Scrabble" type question and not really a math question. Is that what you need ? or is it, "in how many ways can we arrange all the letters of the word ...
*Tuesday, April 8, 2014 at 9:18am*

**Math**

In how many words can you form the word ALGEBRA?
*Tuesday, April 8, 2014 at 7:18am*

**Math**

In how many words can you form the word ALGEBRA?
*Tuesday, April 8, 2014 at 7:16am*

**Math**

correct since the legs are hypotenuse/√2, √6/√2 = √3 check: √3^2 + √3^2 = √6^2 3 + 3 = 6
*Tuesday, April 8, 2014 at 5:08am*

**Math (help)**

don't know what steps you want. The area of a cone is a = 2πr(r+s) just plug in the values for r and s
*Tuesday, April 8, 2014 at 5:07am*

**math**

x + x+30 = 90 now solve for x
*Tuesday, April 8, 2014 at 5:04am*

**Math**

too late for your spelling and punctuation, apparently...
*Tuesday, April 8, 2014 at 4:58am*

**Math**

Go to bed it is to late
*Tuesday, April 8, 2014 at 4:56am*

**Math**

well, it's clear that if there is 1 bus, the numbers work out: 40+16 = 36+20 If there are more buses, then since LCM(40,36) = 360, any multiple of 360 + 56 will also work, with an extra 9 buses if 40/bus, and an extra 10 buses if 36/bus, for each extra 360 kids.
*Tuesday, April 8, 2014 at 4:53am*

**Math**

The teachers in a childcare center are taking their children for a field trip.if each bus takes 40 children, there will be 16 vacant seats. If each bus takes 36 children, 20 children will not get any seats. How many buses are there?
*Tuesday, April 8, 2014 at 4:45am*

**Math**

Thanks Steve!
*Tuesday, April 8, 2014 at 3:00am*

**math**

Two angles are complementary. One contains 30° more than the other. Find both angles
*Tuesday, April 8, 2014 at 1:44am*

**Math (help)**

how to find the surface area of a cone with a diameter of 8 and a slant height of 7? with steps? please
*Tuesday, April 8, 2014 at 1:05am*

**Math**

Please help me with the following by checking my answer. The length of the hypotenuse of an isosceles right triangle is √6 inches. How long, in inches, are the legs of the triangle? A. 3 B. 6 C. √3 - (This is my answer.) D. √6 I am not sure on my answer, ...
*Tuesday, April 8, 2014 at 12:47am*

**math**

I dont know
*Tuesday, April 8, 2014 at 12:32am*

**math**

room: Vr = 11.35*9.5*8.3 = 894.9 box: Vb = 4.25*6.5*4.0 = 110.5 now, subtract and round.
*Tuesday, April 8, 2014 at 12:05am*

**Business math**

The Treasury Department auctioned $21 billion in 3-month bills in denominations of $10,000 at a discount rate of 4.965%. What would be the effective rate of interest? (Use calendar year. Do not round intermediate calculations. Round your answer to the nearest hundredth ...
*Monday, April 7, 2014 at 11:51pm*

**Math**

Thank you Reiny, I now understand! :)
*Monday, April 7, 2014 at 11:42pm*

**business Math**

Please help? The Treasury Department auctioned $21 billion in 3-month bills in denominations of $10,000 at a discount rate of 4.965%. What would be the effective rate of interest? (Use calendar year. Do not round intermediate calculations. Round your answer to the nearest ...
*Monday, April 7, 2014 at 11:35pm*

**Math**

white / green = 3/2 w/18 = 3/2 2w = 54 w = 27 check: 27/18 = 3/2
*Monday, April 7, 2014 at 11:35pm*

**business Math**

Carl Sonntag wanted to compare what proceeds he would receive with a simple interest note versus a simple discount note. Both had the same terms: $19,500 at 8% for 2 years. Use ordinary interest as needed. a. Calculate the simple interest note proceeds. Can someone help me? ...
*Monday, April 7, 2014 at 11:34pm*

**business Math**

You were offered the opportunity to purchase either a simple interest note or a simple discount note with the following terms: $33,353 at 7% for 18 months. a. Calculate the effective interest rate. (Do not round intermediate calculations. Round your final answer to the ...
*Monday, April 7, 2014 at 11:33pm*

**Math**

√(2x^2+5)=2 square both sides 2x^2 + 5 = 4 2x^2 = -1 x^2 = -1/2 no solution, since we cannot take the square root of a negative in the real number set.
*Monday, April 7, 2014 at 11:33pm*

**Business Math**

Can someone help me with this problem: On September 5, Sheffield Company discounted at Sunshine Bank a $9,000 (maturity value), 120-day note dated June 5. Sunshineâ€™s discount rate was 9%. (Use Days in a year table.) What proceeds did Sheffield Company receive...
*Monday, April 7, 2014 at 11:31pm*

**Math **

Their are 18 green blocks in a bag.their are 3 white blocks for every 2green blocks.witch proportion can be used to find w,the total number of white blocks in the bag?
*Monday, April 7, 2014 at 11:00pm*

**Math help**

http://www.google.com/webhp?source=search_app#q=surface+area+of+a+cone
*Monday, April 7, 2014 at 10:59pm*

**Math**

Please help me with the following by checking it. Solve for x: √(2x^2+5)=2 A. ±1 B. √2 - (This is my answer.) C. ±2 D. None of the above. I am not sure about my answer, can someone check it please. Any help will be greatly appreciated.:)
*Monday, April 7, 2014 at 10:55pm*

**Math help**

how to find the surface area of a cone with a diameter of 8 and a slant height of 7?
*Monday, April 7, 2014 at 10:49pm*

**Math help**

I got 24,501.42 cubic meters.
*Monday, April 7, 2014 at 10:20pm*

**Math help**

okay I figured it out, is it 24513.84? @Ms.Sue
*Monday, April 7, 2014 at 10:15pm*

**Math help**

http://www.google.com/webhp?source=search_app#q=volume+cylinder
*Monday, April 7, 2014 at 10:02pm*

**Math help**

How do you find the volume of a cylinder with a diameter of 34m and a height of 27m?
*Monday, April 7, 2014 at 10:01pm*

**Math help Please**

My willy bird is 6 inches and has a mass, M, of 2.1kg. During penetration, it reaches a force or 15.0 N with a coefficient of friction 0.75. Calculate its rotational velocity given no respect to time. How much work is done in a thirty second period?
*Monday, April 7, 2014 at 9:51pm*

**Math**

Dough + Heat = Cookie
*Monday, April 7, 2014 at 9:49pm*

**math**

a storage room measures 11.35 feet in length by 9.5 feet in width by 8.3 feet in height. it contains a box which is 4.25 feet in length 6.5 feet in width and 4.0 feet in height.how many cubic feet of storage space are left in the room rounded to the nearest cubic foot
*Monday, April 7, 2014 at 9:49pm*

**Math**

Atta go :) You are welcome.
*Monday, April 7, 2014 at 9:42pm*

**Math**

If hannah 2/3 of a quart of milk and sh used half the answer is 2/6 or simplified 1/3
*Monday, April 7, 2014 at 9:31pm*

**Math**

Monique is making cookies for the pajama party at her house. She has 3-1/2 cups of sugar. The recipe calls for 3/4 cup of sugar for one batch of cookies. Write an equation that can be used to find c, the total number of batches of cookies she can make.
*Monday, April 7, 2014 at 9:28pm*

**Math**

ok I got now. Thank you so much for your help, I appreciate it.
*Monday, April 7, 2014 at 9:25pm*

**Math**

I got t=70 and it still says it is wrong.
*Monday, April 7, 2014 at 9:23pm*

**Math**

1n+7p = 5.55 3n+2p = 12.28 that's the same as 2n+14p = 11.10 21n+14p = 85.96 now subtract to get rid of the p's 19n = 74.86 n = 3.94
*Monday, April 7, 2014 at 9:20pm*

**Math**

1n + 7p = 5.55 3n + 2p = 12.28 from the first: n = 5.55-7p sub into the 2nd 3(5.55-7p) + 2p = 12.28 16.65 - 21p + 2p = 12.28 -19p = -4.37 p = .23 then n = 5.55 - 7(.23) = 3.94 check: 1 notebook + 7 pencils = 3.94 + 7(.23) = 5.55 3 notebooks + 2 pencils = 3(3.94) + 2(.23) = 12....
*Monday, April 7, 2014 at 9:19pm*

**Math**

Right now, (-2,-5) is 5 units below the x-axis so reflecting it over the x-axis would put it how many units above the x-axis ? And the total distance would be ...... ?
*Monday, April 7, 2014 at 9:14pm*

**Math**

Jim paid $ 5.55 for 1 notepad and 7 pencils. Anne paid $ 12.28 for 3 notepads and 2 pencils. How much does each notepad cost? Show all work
*Monday, April 7, 2014 at 9:13pm*

**Math **

What is the distance between (-2,-5) and its reflection over the x-axis?
*Monday, April 7, 2014 at 9:07pm*

**Math**

dQ/dt = 200(-.0488) e^-.0488 t
*Monday, April 7, 2014 at 9:04pm*

**Math**

3(0.4h+5)>4(0.2h+7) 1.2h + 15 > .8h + 56 1.2h - .8h > 56 - 15 .4h > 41 h > 41/.4 h > 102.5
*Monday, April 7, 2014 at 9:03pm*

**Math**

thanks
*Monday, April 7, 2014 at 9:02pm*

**Math**

A = Ai e^-kt .5 = e^-14.2 k ln .5 = -14.2 k k = .0488 so Q = 200 e^-.0488 t
*Monday, April 7, 2014 at 9:02pm*

**Math**

least common multiple 8 = 2*2*2 30 = 5*2*3 so we need a 5, 3 twos, and a 3 so 120
*Monday, April 7, 2014 at 8:58pm*

**Math**

y=-x x+y=3
*Monday, April 7, 2014 at 8:56pm*

**math word problem PLEASE HELP**

r = ribbon = 15 (5 3/8) - 10(3/4) r = 15 (43/8) - 60/8 r = (15*43 - 60 )/8 = 585/8 = 73 1/8 yards
*Monday, April 7, 2014 at 8:55pm*

**math (Ms.Sue)**

28ft.
*Monday, April 7, 2014 at 8:51pm*

**Math**

At a baseball stadium, every eighth person received a coupon for free popcorn. Every thirtieth person received a free hot dog. WHich person was the first to receive both free gifts?
*Monday, April 7, 2014 at 8:50pm*

**math word problem PLEASE HELP**

Susan uses 15 rolls of ribbon to decorate 10 wedding baskets. Each roll of ribbon is 5 3/8 yards long. After she decorates the baskets, she decides to cut off another 3/4 yard from the ribbon of each basket. Write and simplify an expression to fin out how much ribbon was used ...
*Monday, April 7, 2014 at 8:42pm*

**Math**

This is what I got and it says it is wrong. Can you tell me what I'm doing wrong please? Thanks Q(t) = 200(.5)^(.0704t) Q '(t) = (200/14.2) (.5)^(t/14.2) so when t = 21.5 Q ' (t) = (200/14.2) (.5)^(21.5/14.2) = 4.931 g/day
*Monday, April 7, 2014 at 8:41pm*

**Math**

Thanks for the help.
*Monday, April 7, 2014 at 8:37pm*

**Math**

11 is correct.
*Monday, April 7, 2014 at 8:31pm*

**Math**

Ms.Smith wrote the division problem shown below, using a box to represent the missing digit. What value can replace the box in the quotient to complete the division problem? 132 divided by 12 and i got 11 but does 11 answer the question or do i put 1 for the value left?
*Monday, April 7, 2014 at 8:30pm*

**Math**

Ahh, looks like neither one of us read the question carefully. P(t) given the percentage that will FAIL, which is 30.2% But it says, "what percentage ... is usable " so 100 - 30.2 or 69.8%
*Monday, April 7, 2014 at 8:28pm*

**Math**

You percent is percent that will FAIL It asks for the ones that do not fail.
*Monday, April 7, 2014 at 8:28pm*

**Math**

100 - 30.2
*Monday, April 7, 2014 at 8:27pm*

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