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April 21, 2014

Homework Help: Math

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Recent Math Questions

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Need 8 grade math help quick please!
Thank you!
Friday, March 28, 2014 at 8:25pm

math
It was in a steel box lined with layers and layers of bubble wrap ( one of the many ways my students use in the contest)
Friday, March 28, 2014 at 8:23pm

math
She would have 56 total. 28 + 28 = 56 So, 56 is the answer.
Friday, March 28, 2014 at 8:17pm

math
samantha has 28 and she gets 28 more how many would she have in all.
Friday, March 28, 2014 at 8:12pm

math
11:10 am
Friday, March 28, 2014 at 7:59pm

Math
The cafeteria has 4 cases of tuna and 9 single cans of tuna. In all,there are 65 can of tuna. How many cans of tuna are in a case? (P.S.-PLEASE SHOW WORK...I NEED HELP!Thank You!)
Friday, March 28, 2014 at 7:49pm

math
A wood burner burns 180 pounds of wood in 5/2 days . How many pounds of wood is needed for the burner in 1 month.
Friday, March 28, 2014 at 7:48pm

math
an real raw egg was dropped from a 20 story height , however it didn't break . How is that possible ? IT LANDED on concreate solid.
Friday, March 28, 2014 at 7:47pm

Math for grade 6 peace
96 = 0.48 x x = 96/0.48
Friday, March 28, 2014 at 7:14pm

math
http://www.jiskha.com/display.cgi?id=139​6046268
Friday, March 28, 2014 at 7:12pm

math help
for 5 days 2/5 + 1/5 + 3/5 = 6/5*5 = 30/5 Sat 3 *4/5 = 12/5 Wed -2/5 for wet Pepper 30/5 + 12/5 - 2/5 = 40/5 = 8 hours
Friday, March 28, 2014 at 7:11pm

Algebra
Only you will know that. It's actually surprising how often basic math skills come in handy. Other than that, the mental skills developed when solving problems are definitely useful later in life, no matter the field of endeavor. Now, if you plan to find a sugar daddy/mama...
Friday, March 28, 2014 at 7:05pm

math help
Enrique charges $5 for every 1/5 hour he spends walking dogs. In the morning he walks Buttons for 2/5 hour, Bruno for 1/5 hour, and Pepper for 3/5 hour, Monday through Friday. On Saturdays he takes Mimi, Diva, and Coco to the dog park for 4/5 of an hour. On Wednesday this week...
Friday, March 28, 2014 at 6:37pm

math
Enrique charges $5 for every 1/5 hour he spends walking dogs. In the morning he walks Buttons for 2/5 hour, Bruno for 1/5 hour, and Pepper for 3/5 hour, Monday through Friday. On Saturdays he takes Mimi, Diva, and Coco to the dog park for 4/5 of an hour. On Wednesday this week...
Friday, March 28, 2014 at 6:35pm

math
Enrique charges $5 for every 1/5 hour he spends walking dogs. In the morning he walks Buttons for 2/5 hour, Bruno for 1/5 hour, and Pepper for 3/5 hour, Monday through Friday. On Saturdays he takes Mimi, Diva, and Coco to the dog park for 4/5 of an hour. On Wednesday this week...
Friday, March 28, 2014 at 6:34pm

math
4 * 6/5 + 4/5 + 1/5 = 29/5 = 5 4/5 hr How did You got 29 /5 where as here when iam calculating its coming 44/5. pls explain
Friday, March 28, 2014 at 6:33pm

math
Since kim ran 20 miles, sam ran HALF as much as Kim. Half = 20 divided by 2. That equals 10!!!
Friday, March 28, 2014 at 6:30pm

Math for grade 6 peace
The computer club is having a fundraiser to help pay for a trip to the science museum. So far they have raised $96, which is only 48% of their goal. How much money are they trying to raise?
Friday, March 28, 2014 at 6:25pm

math
Kara eats 4/5 of the food that Jillian does. If kara needs to bring 14lbs of food for the week, how much does Jillian need to bring.
Friday, March 28, 2014 at 6:05pm

math
Thank you
Friday, March 28, 2014 at 5:27pm

math
MTθF: 6/5 hr Sat: 4/5 hr W 1/5 hr 4 * 6/5 + 4/5 + 1/5 = 29/5 = 5 4/5 hr
Friday, March 28, 2014 at 5:24pm

math help
#2 is ok, but not yet complete: x^2-1 = (x-1)(x+1)
Friday, March 28, 2014 at 5:21pm

math
Enrique charges $5 for every 1/5 hour he spends walking dogs. In the morning he walks Buttons for 2/5 hour, Bruno for 1/5 hour, and Pepper for 3/5 hour, Monday through Friday. On Saturdays he takes Mimi, Diva, and Coco to the dog park for 4/5 of an hour. On Wednesday this week...
Friday, March 28, 2014 at 5:19pm

Math
v = (1/3)pi(r^2)h h = 2.8m r =d/2 = 6.8/2 = 3.4m v = (1/3)pi(3.4)^2(2.8)
Friday, March 28, 2014 at 5:19pm

math help
1. x^2 +2xy +y^2 -a^2-2ab-B^2 2. 6(x^4-1) = 6(x^2-1)(x^2 +1) = 6(x-1)(x+1)(x^2+1)
Friday, March 28, 2014 at 5:14pm

math help
factor: 1) (x+y)^2 - (a+b)^2 = [(x+y) - (a+b)] [(x+y) + (a+b)] = [x+y-a-b] [x+y+a+b] 2) 6x^4 - 6 = 6(x^4 - 1) = 6(x^2-1)(x^2+1) Is this right?
Friday, March 28, 2014 at 5:00pm

Math 20-3
v = 1/3 pi (3.4^2) (2.8) m^3
Friday, March 28, 2014 at 4:43pm

Math
A pile of gravel is conical in shape. If the diameter is approximately 6.8m and the height is 2.8m, what is the volume of gravel in the pile?
Friday, March 28, 2014 at 4:41pm

Math 20-3
A pile of gravel is conical in shape. If the diameter is approximately 6.8m and the height is 2.8m, what is the volume of gravel in the pile?
Friday, March 28, 2014 at 4:39pm

MATH VERY URRRGENT!!!!!!!!!!!!!
LOL...everyone from connexus is looking at this. xD
Friday, March 28, 2014 at 3:23pm

3rd grade math
Cannot draw here. Each person got 1 1/3 pieces.
Friday, March 28, 2014 at 2:23pm

Math
I am guessing that P(number < 2) is supposed to mean probability that the number is less than 2 What number ???? Are you tossing a die ? confirm
Friday, March 28, 2014 at 2:16pm

logic and math
Write the reciprocal and the anti-reciprocal of: That a quadrilateral has 4 equal sides, is a necessary condition for that it is a square. That a triangle has 2 equal sides, is a necessary condition for that it is isosceles. Only if f is integrable in an I interval, f is ...
Friday, March 28, 2014 at 12:50pm

logic and math
Calculate the truth value (f or V) a. Is it true that if (the Papaya is a fruit from the Caricaseas or the Pitahaya is the fruit of a plat from the Cactaseas) then (el Cohombro is a fruit of a plant from the family of the Cucurbitaceas or the Nisper is a fruit of a tree from ...
Friday, March 28, 2014 at 12:47pm

Math
1. P(Number<2) A. 1/6 B. 2/6 C. 4/6 D. 3/6 2. P(Number>3) A.4/6 B.1/6 C.2/6 D.5/ 3. P(Complement of 4) A.1/6 B.5/6 C.2/6 D.4/6 4. A multiple choice question has 5 possible answers. What are the odds in favor of guessing the right answer? A.1:5 B.2:2 C.3:1 D.1:3
Friday, March 28, 2014 at 12:20pm

Math
@Steve: Thank you for the help as well, no there isn't a typo. Sometimes the math we're doing is quite confusing. Thank you for the help. c:
Friday, March 28, 2014 at 11:29am

Math
@Reniy: Yes those were the answers I came up with. I couldn't figure out what I was doing wrong, turns out I was doing the first one right and the second one was a bit off. Thank you for the help.
Friday, March 28, 2014 at 11:23am

Language Art (Please Check)
1.C 2.A 3.C 4.C 5.D 6.D 7.B 1.She was rivaling the mayor by A.sending money to him. B.voting for him. C.running against him. 2.In which of the following situations would you be most likely to be caught up in a commotion? A.a riot B.a math exam C.a school assembly 3.Which of ...
Friday, March 28, 2014 at 10:53am

math
we need <x,y> such that <x,y> + <6/√2,6/√2> = <0,-20> Now it's easy to get x and y, and thence the speed and direction.
Friday, March 28, 2014 at 5:51am

Need 8 grade math help quick please!
there is only one number less than 2, and six possible throws. So, P(n<2) = 1/6 Similarly, P(n>=3) = P(n∊{3,4,5,6}) = 4/6 = 2/3 P(n≠4) = 1-P(n=4) = 1 - 1/6 = 5/6
Friday, March 28, 2014 at 5:49am

math
Differentiate cost function and equate it to 0, i.e. 0.1(2x)-1.2=0 or x=1.2/0.2=6; Second derivative is0.2which is+ve hence it corresponds to minimum cost level. Hence x=6,i.e. 600 bikes. Cost/bike for 600 bikes will be =0.1x36-1.2x6+4.993=1.393 hunderd $. For 590 and 610 ...
Friday, March 28, 2014 at 5:17am

Need 8 grade math help quick please!
I don't understand this. I don't get exactly what I'm supposed to do with the P(parenthes) thingy or how each question differs from the next. Theoretical and Experimental Probability: A number cube with the numbers 1 through 6 is rolled. Find the given probability...
Friday, March 28, 2014 at 3:14am

College math
f(x)=x^2+7 upward 8 units
Friday, March 28, 2014 at 2:17am

math
J's bike has determined that when x hundred bikes are built, the average cost per bike is given by C(x)= 0.1x^2-1.2x+4.993, where C(x) is in hundreds of dollars. how many bikes should the shop build to minimize the average cost per bike?
Friday, March 28, 2014 at 1:37am

math
A boat needs to travel south at a speed of 20 km/h. However a constant current of 6 km/h is flowing from the south-east. Use vectors to find: a.the equivalent speed in still water for the boat to achieve the actual speed of 20 km/h. b the direction in which the boat must head ...
Friday, March 28, 2014 at 1:22am

math
j=g j-2055 = g/4 = j/4 3/4 j = 2055 j = 2740
Friday, March 28, 2014 at 12:32am

MATH HELP
If both lines go through (0,0), then one line has slope -2/3, so the other line has slope 3/2. so, s = 2/3
Friday, March 28, 2014 at 12:29am

math 5th
help
Friday, March 28, 2014 at 12:28am

MATH Fractions
thank you it is march and i found this helpful 2 months after your posting!
Friday, March 28, 2014 at 12:25am

Math
a = 2pi*r(r+h) = 2pi*6*26 = 979.68 Hmmm. That includes both ends. The lateral area is a = 2pi*r*h = 2pi*6*20 = 753.6 Is there a typo somewhere? 2pi*6*24 = 904.3, so (D)
Friday, March 28, 2014 at 12:25am

Math
Imagine "opening up" a cylinder, what would you get? 2 equal circles + a rectangle whose length is the circumference of the circle and whose height is the height of the cylinder. so SA = 2π(6^2) + 2π(6)(20) = 72π + 240π = 312π = appr 980 No ...
Friday, March 28, 2014 at 12:23am

math
change per year is (8750-23500)/8 = -1843.75 so, what's -1843.75/23500?
Friday, March 28, 2014 at 12:17am

3rd grade math
if there were x pieces to start, x/5 = 2 x = 10
Friday, March 28, 2014 at 12:15am

Math
no, 26x^2 ≠ x√26 Whatever made you think so. let x = 4 26(4^2) = 26*16 = 416 xV26 = 4√26 = appr 20.4 is 416 = 20.4 ???? However, you could write 26x^ as (x√26)^2
Friday, March 28, 2014 at 12:15am

Math
6 bags uses 5 pounds 12 bags uses 10 pounds, or 5 large bags.
Friday, March 28, 2014 at 12:14am

Math
treat it as two ordered pairs (t, c) where t is temperature and c is consumption so we have (90,220) and (76, 178) slope = (220-178)(/(90-76) = 42/14 = 3 so: c-220 = 3(t-90) c = 3t - 270+220 c = 3t - 50 check: if t = 90, c = 270-50 = 220 if t = 76, c = 228 - 50 = 178
Friday, March 28, 2014 at 12:11am

Math
Chads buys peanuts in 2 pound bags. How many 2 pound bags of peanut should chad buy so that he can fill the 5/6 pound bags without having any peanuts left over
Friday, March 28, 2014 at 12:11am

3rd grade math
suppose there are 2 pieces of the cake left over but you dont know how many pieces there were in the whole cake. explain how you could find the number of pieces in the whole cake if taylor told you that 1/5 of the cake was left.
Friday, March 28, 2014 at 12:06am

math
when u get this answer let me know! i am stuck on the same one!!! but i think that the question should read cut a cake into 8 pieces...
Friday, March 28, 2014 at 12:05am

math
avg rate of change = (23500 - 8750)/(8 = ...
Friday, March 28, 2014 at 12:03am

Math
I assume you pick a card, then throw the die primes from 1-10 : 2,3,5,7 , so 4 of them primes on a die: 2 3 5, so 3 of them prob(2 primes) = (4/10)(3/6) = 1/5 prob(not 2 primes) = 4/5 odds in favour of getting two primes = (1/5) : (4/5 = 1 : 4
Thursday, March 27, 2014 at 11:59pm

3rd grade math
suppose she cut the cake into 8 equal size pieces and 6 people at all the pieces. Explain how they could have divided the pieces so that everyone ate the same amount of cake. You can show your work in a drawing.
Thursday, March 27, 2014 at 11:56pm

2nd question - math help!!
(x+y)^2-x-y = (x+y)^2 - (x+y) = (x+y)(x + y - 1)
Thursday, March 27, 2014 at 11:55pm

math help!!
To make it easier to see, let 2x^2 - x = a so you have 2a^2 - 3a - 9 = (a-3)(2a+3) put the original back in = (2x^2 - x - 3)(4x^2 - 2x + 3) = (x + 1)(2x - 3)(4x^2 - 2x + 3)
Thursday, March 27, 2014 at 11:53pm

math
vehicles lose value over time. A car is purchased for $23 500, but it is worth only $8750 after eight years. What is the average annual rate of change in the value of the car, as a percent?
Thursday, March 27, 2014 at 11:14pm

Math
a trainer for a professional football team keeps track of the amount of water players consume throughout practice. the trainer observes that the amount of water consumed is a linear function of the temperature on a given day. the trainer finds that when its 90 degrees the ...
Thursday, March 27, 2014 at 11:11pm

math
vehicles lose value over time. A car is purchased for $23 500, but it is worth only $8750 after eight years. What is the average annual rate of change in the value of the car, as a percent?
Thursday, March 27, 2014 at 11:09pm

Math
You're welcome.
Thursday, March 27, 2014 at 10:59pm

math
37.5 * 0.08 = $3.00 tax (37.5 + 3.00) * 1.18 = _______ total
Thursday, March 27, 2014 at 10:58pm

math
You're right.
Thursday, March 27, 2014 at 10:53pm

math
A group of friends went to lunch. The bill, before sales tax and tip, was $37.50 . A sales tax of 8% was added. The group then tipped 18% on the amount after the sales tax was added. What was the amount, in dollars, of the sales tax? What was the total amount the group paid, ...
Thursday, March 27, 2014 at 10:50pm

Math
THANK YOU!!
Thursday, March 27, 2014 at 10:50pm

math help!! ANYONE?!?!
someone please help!!!!
Thursday, March 27, 2014 at 10:49pm

math
I forgot to put the answer which is no
Thursday, March 27, 2014 at 10:44pm

math
can you produce a 2-digit whole number by multiplying two-digit whole numbers?
Thursday, March 27, 2014 at 10:42pm

Math
Can 26x^2 be written as x*sqrt26?
Thursday, March 27, 2014 at 10:42pm

Math
I was wondering if you can help me with math real quickly. I just cant figure this out. For the first question I have to find the surface area for the given cylinder. I have to use 3.14 and round to the nearest whole number. The radius is 6ft and the height is 20 ft. A. 180 ...
Thursday, March 27, 2014 at 10:37pm

Math
Mr. Garcia pays $834 for some model cars and model planes. Each model car cost $52. and each model plane cost $14. less than each model car. Mr. Garcia buys 3 more planes than cars. How many model planes does he buy?
Thursday, March 27, 2014 at 10:29pm

math help me pleasee!!
help mee with the two questions, i don't get it and i have a test tomorrow!
Thursday, March 27, 2014 at 10:27pm

math help!!
okay thankyou so much!! :-)
Thursday, March 27, 2014 at 10:25pm

Math
5% = 5/100 = 1/20
Thursday, March 27, 2014 at 10:23pm

Math
2 1/2 hours = 150 minutes (150/3) * 2 = ?
Thursday, March 27, 2014 at 10:21pm

Math
What is 7 sqrt 8 - 2 sqrt 8?
Thursday, March 27, 2014 at 10:20pm

MATH HELP
.................| .........(3,2)\..|../ ...............\.|./(s,1) ................\|/ -----------------|------------------- ................/|\ .............../.|.\ .................| .................| In the accompanying figure, the slope of line k is t and the slpe of line...
Thursday, March 27, 2014 at 10:16pm

Math
There are 120 students trying out for the play. Only 5% of those trying out will have a speaking part. Write this percent as a fraction in its lowest terms.
Thursday, March 27, 2014 at 10:11pm

math help!!
i also need help with this question factor: (x+y)^2-x-y
Thursday, March 27, 2014 at 10:10pm

Math
Reggie is a long distance runner. His daily 2-1/2 hour practice is divided evenly into three areas: warm-ups, running, and cool down. How many minutes total does Reggie spend warming up and cooling down each day at practice?
Thursday, March 27, 2014 at 10:09pm

Math
You have cards numbered 1-10 and a number cube what are the odds of getting two prime numbers? The book says 1\5 but how do they get it.
Thursday, March 27, 2014 at 10:08pm

math help!!
Factor: 2(2x^2-x)^2-3(2x^2-x)-9
Thursday, March 27, 2014 at 10:06pm

math
Mrs. Jones and Mr. Graham had the same amount of money at first. After Mrs. Jones bought a computer that cost $2,055, she had 1/4 as much money as Mr. Graham. How much money did Mr. Graham have?
Thursday, March 27, 2014 at 9:54pm

Math
x + 15 + 2x + 27 = 180 3 x = 138 x = 46
Thursday, March 27, 2014 at 9:38pm

math help!!
[ (x^2+5x) - 6 ] [(x^2+5x) + 6 ] (x^2 + 5 x - 6) (x^2 + 5x + 6) now if the back of your book says (x^2 + 5 x + 6)( x^2 + 5 x - 6) That is the SAME
Thursday, March 27, 2014 at 9:34pm

math help!!
You got the second one, just reversed x y = y x !
Thursday, March 27, 2014 at 9:31pm

math help
That is exactly what we got x y = y x the order is just reversed
Thursday, March 27, 2014 at 9:29pm

Math
If x+15 and 2x+27 represent the number of degrees in measures of two consecutive angles of a parallelogram, find the value of x.
Thursday, March 27, 2014 at 9:27pm

math
you could do a square with the base as 4 then the height as a 11 then add another figure which has idk because I had that problem
Thursday, March 27, 2014 at 9:26pm

math-still confused
the answers at the back of the textbook say that the answer is (a-b+c-d)(a-b-c+d) i don't get it :$
Thursday, March 27, 2014 at 9:22pm

math help
LOL, no need for wolfram !
Thursday, March 27, 2014 at 9:19pm

math help
remember - -d = + d
Thursday, March 27, 2014 at 9:19pm

math help!!
factor: (x^2+5x)^2 - 36 and (a-b)^2 - (c-d)^2 show the steps pleasee!
Thursday, March 27, 2014 at 9:18pm

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