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Homework Help: Math

Branches of Math

Recent Homework Questions About Math

Post a New Question | Current Questions

math
solve with addition: -3x + y = 3 2x- 3y = 5
Sunday, March 14, 2010 at 5:33am

MATH
John forgot to pay his $364.00 income tax on time. The IRS charged a penalty of 12% for the 55 days the money was late. Find the penalty that John paid. (Use a 365 day year.)
Sunday, March 14, 2010 at 3:34am

math
Barbara knows that she will need to buy a new car in 4 years. The car will cost $15,000 by then. How much should she invest now at 10%, compounded quarterly, so that she will have enough to buy a new car? Round to the nearest cent
Sunday, March 14, 2010 at 1:46am

Math
Solve by substitution: x + 2y =1 8x + 8y =4
Sunday, March 14, 2010 at 12:11am

math
-6x + 3 =-7 - 5x
Saturday, March 13, 2010 at 11:58pm

math
The mass m(t) remaining after t days from a 70 g sample of thorium-234 is given by the equation shown below. m(t) = 70e-0.0274t Find the half-life of thorium-234. (Round your answer to the nearest tenth.)
Saturday, March 13, 2010 at 11:25pm

math.
2. Factor these ---(3x^11z^5)^3 b. (3x^5)^ -3 / 2x-5(3y)^4 c.3x^5)^ -3 / 2x ^ -5(3y)^4 (same as b but - 5 is the exponent)
Saturday, March 13, 2010 at 11:20pm

Math209
Selling shirts. If a vendor charges p dollars each forrugby shirts, then he expects to sell 2000 - 100p shirts ata tournament. a) Find a polynomial R(p) that represents the total revenuewhen the shirts are p dollars each. b) Find R(5), R(10), and R(20). c) Use a bar graph to d...
Saturday, March 13, 2010 at 10:30pm

math
solve using the elimination method 0.05x+0.25y=11 0.15x+0.05y=12
Saturday, March 13, 2010 at 8:52pm

math
How do you solve using the elimination method 0.3x-0.2y=4 0.5x+0.3y=-7/17
Saturday, March 13, 2010 at 8:50pm

math
SOLVE USING SUBSTITUTION METHOD X+2Y =1 8X +6Y + 4
Saturday, March 13, 2010 at 8:18pm

English
How do I start out writng a paragraph on a subject, Food Safety? * Subject: food safety * Occasion: aftermath of an outbreak of sickness at fast food restaurants due to tainted meat * Audience: FDA (agency that manages food safety) * Purpose: Persuade audience to do a better j...
Saturday, March 13, 2010 at 8:02pm

math
0.05x+0.25y=11 0.15x+0.05y=12 solve using the elimination method
Saturday, March 13, 2010 at 7:59pm

math
How do you solve using the elimination method 0.3x-0.2y=4 0.5x+0.3y=-7/17
Saturday, March 13, 2010 at 7:58pm

math
Mr. Rosart selects two students from his class to present their book reports. He places the names of each student in a box and randomly picks one at a time. The class has 14 boys and 12 girls. What is the probability that the second name Mr. Rosart picks is a boy, if the first...
Saturday, March 13, 2010 at 7:44pm

math
0.3x-0.2y=4 0.5x+0.3y=-7/17 Can anyone Please help me solve using the elimination system..... Someone tried to explain it but I still do not get it at all
Saturday, March 13, 2010 at 7:19pm

math
Can someone help me solve the following....using elimination methods 1) 5x+7y=43 -4x+y=25 2)9x-9y=36 7y-3x=-14 I think the answers are would the answer to number 1 be (-4.26,1.52)? would the answer to number 2 be (-0.5,-6.5)? Can someone please verify or tell me what I did wro...
Saturday, March 13, 2010 at 7:19pm

math
in 1995, the life expectancy of males was in a certain country was 70.7 years. In 2001, it was 74.3 years. Let E represent the life expectancy in year t and let t represent the number of years since 1995.
Saturday, March 13, 2010 at 7:02pm

math
Can someone help me solve the following....using elimination methods 1) 5x+7y=43 -4x+y=25 2)9x-9y=36 7y-3x=-14
Saturday, March 13, 2010 at 6:39pm

math
0.3x-0.2y=4 0.5x+0.3y=-7/17 Can anyone Please help me solve using the elimination system.....
Saturday, March 13, 2010 at 6:35pm

math
a student chosen at random failed a driving test.
Saturday, March 13, 2010 at 5:55pm

Math
Dalya received the proceeds from an inheritance on April 5. She wants to set aside enough on April 6 so that she will have $17,000 available on October 2 to purchase a car when the new models are introduced. If the current interest rate on 91- to 180-day deposits is 7.75% pa, ...
Saturday, March 13, 2010 at 5:50pm

math
average of: 8; 10; 12; 14; 16
Saturday, March 13, 2010 at 5:43pm

math
1) x+8y=33 -x+4y=3 I need help solving this one using the elimination method!
Saturday, March 13, 2010 at 5:37pm

math
1) 6m+n=47 m-4n=12 can someone help me solve using substitution method?
Saturday, March 13, 2010 at 5:35pm

math
can someone please help me with this elimination methods problem? 0.05x+0.25y=11 0.15x+0.05y=12 solve using the elimination method and give the ordered pair...
Saturday, March 13, 2010 at 5:28pm

math
a card is picked from a pack containing 52 cards . it is then replaced and a second card is picked. Find the probability that a)both cards are the seven of diamonds, b)the first card is a heart and the second a spade. c)one card is from a black suit and other is from a red sui...
Saturday, March 13, 2010 at 5:22pm

Math Help Please
A bottle contains 0.5 quart of grape juice. Keisha will use 0.2 of the grape juice to makie fruit punch. How much grape juice sill Keisha use for the fruit? I chose a.)0.3. My mom says it is b.) 0.2 The teacher's edition says it is c.) 0.1. Can you please explain how to wo...
Saturday, March 13, 2010 at 3:18pm

math
in a group of 100 people, 40 own a cat, 25 own a dog and 15 own a cat and a dog. Find the probability that a person chosen at random a) owns a dog or a cat b) owns a dog or a cat, but not both c)owns a dog, given that he owns a cat d) does not own a cat, given that he owns a dog.
Saturday, March 13, 2010 at 1:33pm

7th Grade Math
Find the area of the circle described. Use pi= 22/7. Diameter= 1.4cm Please help!
Saturday, March 13, 2010 at 1:14pm

Math
Forest rangers use degree measure to identify directions and locate critical spots such as fires. A forest ranger at tower A observes smoke at a bearing of 149 degrees (clockwise from the north) while another forest ranger at tower B observes the same smoke at a bearing of 250...
Saturday, March 13, 2010 at 12:22pm

math
what is the way to know what was Thales statement ?
Saturday, March 13, 2010 at 10:45am

math
Elimination Method....I am not understanding this method either and need some help here is what I am working on: 1) x+8y=33 -x+4y=3 2) 5x+5y=-7 7x-2y=13 3) 0.3x-0.2y=4 0.5x+0.3y=-7/17 Can someone please help me with these!
Saturday, March 13, 2010 at 1:06am

Math
Can someone help me solve the following problems using the substituion method? I need to find the ordered pairs and I do not get it.... Here they are 1) 6m+n=47 m-4n=12 2) 6x+4y=-10 -7x+y=57 3) 5x+7y=43 -4x+y=25
Saturday, March 13, 2010 at 1:03am

math
How do I convert 7/13 to a decimal then to a percent?
Saturday, March 13, 2010 at 12:15am

Math
Use the fact that (125)^1/3 = 5 and the tangent line approximation to estimate (123)^1/3
Saturday, March 13, 2010 at 12:14am

math
How do I convert 7/13 to a decimal then to a percent?
Saturday, March 13, 2010 at 12:14am

Math
Hi, I am doing a practice exam, and I came across this problem and I am have difficultly starting it. A UFO flies horizontally at a constant speed at an altitude of 15 km and passes directly over a tracking telescope on the ground. When the angle of elevation is pi/3, this ang...
Friday, March 12, 2010 at 11:02pm

Math
Solve using long division 0.5 ÷ 0.02
Friday, March 12, 2010 at 10:18pm

Math
Find the simple interest on a loan of $100 at an interest rate of 2% for 7 years.
Friday, March 12, 2010 at 10:08pm

Math
How do I find the derivative of sin^2(x) or written as sin(x)^2?
Friday, March 12, 2010 at 9:52pm

Math
Do you know where I can find a list of all the formulas? Like for volume of a cone, sphere, areas, etc?
Friday, March 12, 2010 at 9:50pm

math
x^2-8x+16
Friday, March 12, 2010 at 8:03pm

math
In a Gallup poll of 1,038 adults, 540 said that second-hand smoke is very harmful. What is the percentage of adults who said second-hand smoke is very harmful?
Friday, March 12, 2010 at 5:31pm

math
5 x (x + 2y) - (5x +2y) + y(2x + z) translate into a word phase.
Friday, March 12, 2010 at 1:58pm

math
Freddie Fast can make 6 4/5 chairs per hour on a furniture assembly line. Warren Weary makes 4 1/2 chairs per hour. In a 10-hour shift, how many more chairs does freddie make than warren? and if i may i would also like a small explanatation please i just done get it and thank ...
Friday, March 12, 2010 at 12:27pm

learn 49 math
a road trip has a scale of 5/8 inches for every 125 miles.. how many inches would be needed to represent 1000 miles on the map?
Friday, March 12, 2010 at 11:46am

math
Short projectile motion question A German rocket from the second world war had a range of 3000meters reaching a maximum height of 1000meters. Determine the rockets maximum velocity
Friday, March 12, 2010 at 9:21am

math
A balloon in the shape of a sphere is deflating. Given that t represents the time, in minutes, since it began losing air, the radius of the ballon (in cem) is r(t)=16-t. Let the equation V(r)= 4/3 pi r^3 represent the volume of a sphere of radius r. Find (V (open dot) r)(t)
Friday, March 12, 2010 at 8:06am

maths
1. Sphere C(-2,1,-3), radius=7. T plane at (4,-2,-1)=? (a) 6x-3y+2z=0 (b) r.(6,3,2)=28 (c) 5x-3y-2z=28 (d) r.(6/7,-3/7,2/7) 2. Sphere (x-1)²+(y-5)²+(z-2)²=49 and planr r.(-2,-6,-3)=0 form which circle?(a) (x-1)²+(y-5)²+(z-2)²=19.5​3 (b) C(0,...
Friday, March 12, 2010 at 1:36am

maths
The line r=(2,3,4)+µ(-1,0,3) and the point (6,0,2) form which plane: (a) r.(-1,0,3)=10 (b) r.(9,10,3)=60 (c) r.(2,3,4)=29 (d) r=(2,3,4)+µ(-1,0,3)+ù(6,0,2​) Please help!!! Thanks!
Friday, March 12, 2010 at 1:36am

Math
How would I find the formual of power function out of these 2 point? (5,75)(10,600)
Friday, March 12, 2010 at 12:52am

math
Hey I need some help with this problem. Any ideas on how to solve it? Thanks lots. : A hardware supplier manufactures three kinds of clamps, types A, B and C. Production restrictions require them to make 10 units more type C clamps than the total of the other types and twice a...
Friday, March 12, 2010 at 12:31am

math
one side of a right triangle has 2cm less than the hypothuse, and 7cm more than the third side what is the lenghnt of each side
Friday, March 12, 2010 at 12:02am

math
A TV reporter said that twice as many woodlands were lost this year to fire than in the preceding year. He claimed this was an increase of 200%. Was he correct?
Thursday, March 11, 2010 at 11:22pm

Math 10th grade
five marbles in a jar are green. the odds against choosing a green marble are "4:1" how many marbles are in the jar
Thursday, March 11, 2010 at 10:48pm

math
How many liters are in 200 milliliters
Thursday, March 11, 2010 at 10:08pm

math
What is the least common denominator of the rational expressions x-1/x^2+8x+7 and -3/x^2+x
Thursday, March 11, 2010 at 9:49pm

Math
A store receive an invoice for $1773.75 dated January 23 with terms 3/10, 1.5/25, n/45. a) What is the balance after a payment of $1250 on Februray 2? 1250/(1-.03)=1288.66 1288.66-1773.75=485.09 Answer for (a)$485.09 b) What additional payment on February 17 will settle the i...
Thursday, March 11, 2010 at 9:45pm

Math
How do I show 33/100 = 1/3, step by step?
Thursday, March 11, 2010 at 9:17pm

Math
How do you show 33/100 as a reduced fraction? The answer choice is suppose to be approximately.
Thursday, March 11, 2010 at 9:02pm

math
A landscaping company sells 40-pound bags of top soil. The actual weight x of a bag, however, may differ from the advertised weight by as much as 0.75 pound. Write an inequality involving absolute value that expresses the relationship between the actual weight x of a bag and 4...
Thursday, March 11, 2010 at 8:39pm

Math
Greg is opening a car wash. He estimates his cost equation as C= 5000 +0.05x and his revenue equation as where R=1.9x is the number of cars washed in a six-month period. Find the number of cars that must be washed in a six-month period for Greg to make a profit.
Thursday, March 11, 2010 at 8:38pm

math
You roll 2 six-sided dice. Give the probability of rolling the total 2.
Thursday, March 11, 2010 at 8:34pm

College Math!
A store receive an invoice for $1773.75 dated January 23 with terms 3/10, 1.5/25, n/45. a) What is the balance after a payment of $1250 on Februray 2? 1250/(1-.03)=1288.66 1288.66-1773.75=485.09 Answer for (a)$485.09 b) What additional payment on February 17 will settle the i...
Thursday, March 11, 2010 at 8:28pm

math214
Find 28° 29’ 46” - 16° 48’ 59’’
Thursday, March 11, 2010 at 8:12pm

Math
solve the polynomial equation (x+5)(x+1)=45
Thursday, March 11, 2010 at 8:11pm

math
Write the probability as a decimal,percent and fraction. C) has a "50-50" chance D) will happen about 3 times out of 4 E) has 2 chances in 3 of happening C)0.5,50%,50/N D)0.75,75%,3/4 E)0.66,66%,2/3 Thanks!:) PsyDAG Is my Answer correct?
Thursday, March 11, 2010 at 8:07pm

Math!
A store receive an invoice for $1773.75 dated January 23 with terms 3/10, 1.5/25, n/45. a) What is the balance after a payment of $1250 on Februray 2? 1250/(1-.03)=1288.66 1288.66-1773.75=485.09 Answer for (a)$485.09 b) What additional payment on February 17 will settle the i...
Thursday, March 11, 2010 at 7:48pm

Math (Analysis)
Suppose that A has exactly three elements and B has exactly two. How many different functions are there from A to B? How many of these are injective? How many are surjective?
Thursday, March 11, 2010 at 7:37pm

math
Geral and michelle went on a 24 bike-ride. By lunch time they had ridden 5 eigth of the total distance. How many miles did they have left to ride after lunch?
Thursday, March 11, 2010 at 7:34pm

Math!
Pls help me on this, i dunno the answer but i got the answer of my own, but its wrong nad this paper is already marked, but i still cant seem to understand how to solve this! A furniture store bought an item for $810 less 15%. The store's expenses are 38% of the cost and t...
Thursday, March 11, 2010 at 7:19pm

Math!
A store receive an invoice for $1773.75 dated January 23 with terms 3/10, 1.5/25, n/45. a) What is the balance after a payment of $1250 on Februray 2? 1250/(1-.03)=1288.66 1288.66-1773.75=485.09 Answer for (a)$485.09 b) What additional payment on February 17 will settle the in...
Thursday, March 11, 2010 at 7:14pm

Math (Geometry)
A rectangle has a perimeter of 12 m. If each side is a whole number of meters, what are the possible dimensions for the length and width? List them and explain your answer.
Thursday, March 11, 2010 at 6:25pm

math_pre-calc
Find the equation of a circle that passes through the points (6,3) ans (-4,-3) and whose center lies on the line y=2x-7
Thursday, March 11, 2010 at 6:17pm

5th grade Math
A rectangle has a perimeter of 12 m. If each side is a whole number of meters, what are the possible dimensions for the length and width? List them and explain your answer.
Thursday, March 11, 2010 at 6:12pm

math (always)
if peter has 60 basball cards in his collection how many baseball football and basketball cards does he have? my answer was-20 baseball cards 10 football cards 10 basketball cards
Thursday, March 11, 2010 at 5:44pm

Math 98 pre algebra
14 and 2/3 times 2 and 2/11 divided by 3 and 3/8. i got =234 and 1/4 am I correct and if not what is the answer?
Thursday, March 11, 2010 at 5:22pm

math
peter bought a bag of candy. He gave away ten percent of the candy too his wife and the gave three pieces to meg. he gave one forth of what he had left to his friend joe and then ate half of the remaining 18 peaces of candy. How many pieces of candy were originally in the bag?
Thursday, March 11, 2010 at 4:46pm

math 12 logarithms
I need to express log base 5 sqrt5 =0.5 in exponential form. Would it be 5^0.5 =sqrt5. I'm not really understanding this unit very well. Any explaination would be greatly appreciated.
Thursday, March 11, 2010 at 4:34pm

math
1. Sphere C(-2,1,-3), radius=7. T plane at (4,-2,-1)=? (a) 6x-3y+2z=0 (b) r.(6,3,2)=28 (c) 5x-3y-2z=28 (d) r.(6/7,-3/7,2/7) 2. Sphere (x-1)²+(y-5)²+(z-2)²=49 and planr r.(-2,-6,-3)=0 form which circle?(a) (x-1)²+(y-5)²+(z-2)²=19.5​3 (b) C(0,...
Thursday, March 11, 2010 at 4:31pm

math 12 logarithms
How would I go about proving 1/log a +1/log a = 1/log base 100 a. Any help would be greatly appreciate. Thanks
Thursday, March 11, 2010 at 4:17pm

Maths
The line r=(2,3,4)+µ(-1,0,3) and the point (6,0,2) form which plane: (a) r.(-1,0,3)=10 (b) r.(9,10,3)=60 (c) r.(2,3,4)=29 (d) r=(2,3,4)+µ(-1,0,3)+ù(6,0,2​) Please help!!! Thanks!
Thursday, March 11, 2010 at 3:18pm

math
Lydia Rise us building a terraium and needs to buy two sizes of gravel and soil to go in the bottom. The terraiun is 24 in longs, 14 in wide, and 15 in tall. A.The bottom layer is pea gravel and needs to be 2 inches deep. How many cubic inches will she need? B. The second laye...
Thursday, March 11, 2010 at 3:07pm

TRIG MATH
If sin theta= -7/8, then the value of 1/cot theta in the interval 3pi/2<theta is? okay I've done this question twice. The 1st time I got -7/sqrt15 and the next time got sqrt15/7. Are either of these right or am I totally messed??? I've got myself confused.
Thursday, March 11, 2010 at 3:03pm

Math
Find the slope, if it exists. 60x-40y+15=0. I'm stumped on this problem Could someone please help.? Thanks.
Thursday, March 11, 2010 at 2:18pm

math
Let {xn} be a sequence converging to á.? Suppose the errors en = |xn – á| satisfy en+1< or = Men^2en -1 for some constant M>0. What can be said about the order of convergence?
Thursday, March 11, 2010 at 1:40pm

Math
Three planes: x+y-2z=1 2x+z=y-4 -3x-y+z=-2 They intersect at: (a) (-2/5,5,9/5) (b) no common intersection (c) r=(5/3,-2/3,0)+&(1,5,3) (d) r=(0,-4,-5)+%(1,5,3) &/%=signs like alpha and beta, used in vector eqns Please help! I just can't get the answer to be/ressemble any of...
Thursday, March 11, 2010 at 1:23pm

Math questions
What are some examples of regular polyhedra? What are some examples of other important polyhedra? What characteristics help you determine whether a polyhedron is regular or irregular? How can you check for symmetry and rotational symmetry of polyhedra?
Thursday, March 11, 2010 at 11:53am

Math
Hi I need help figuring out these to word problems. Tom has created a scale drawing of his property for use in designing a landscape plan. 1 in on is drawing corresponds to 12 ft. There is a pond that is 112 ft. long on his property. How long will it appear on the drawing? Rou...
Thursday, March 11, 2010 at 11:08am

Math
Show that Euler’s formula holds for the polyhedra described in A right pentagonal prism
Thursday, March 11, 2010 at 10:21am

Math
Which uppercase letters of the alphabet have rotational symmetry?
Thursday, March 11, 2010 at 9:52am

math2
Solve the problem. You traveled 189 miles on 7 gallons of gasoline. At this rate, how many gallons of gasoline would you need to travel 297 miles?
Thursday, March 11, 2010 at 9:29am

Math
Differentiate in terms of x: 1] y = cos^3 5x 2] y = sec^2 3x
Thursday, March 11, 2010 at 5:38am

Math
A box has a bottom with one edge 7 times as long as the other. If the box has no top and the volume is fixed at V, what dimensions minimize the surface area? Please help me find the COMPLETE dimenssion of the box.
Thursday, March 11, 2010 at 3:31am

math
What is the height of an equilateral triangle that has sides of length 1 cm?
Thursday, March 11, 2010 at 2:03am

Math
A box has a bottom with one edge 7 times as long as the other. If the box has no top and the volume is fixed at V, what dimensions minimize the surface area?
Thursday, March 11, 2010 at 1:47am

Math
In 1920, the record for a certain race was 46.6 sec. In 1980, it was 45.4 sec. Let R(t)= the record in the race and t = the number of years snce 1920. a) Find a linear function that fits the data R(t) = b) Use the function in (a) to predict the record in 2003 and in 2006. 2003...
Thursday, March 11, 2010 at 1:38am

Math
The function W(d) = 0.112d approximates the amount in centimeters of water that results from d cm of snow melting. find the amount of water that results from snow melting from depts of 15cm, 26 cm, 70 cm
Thursday, March 11, 2010 at 1:29am

Math
In 1920, the record for a certain race was 46.6 sec. In 1980, it was 45.4 sec. Let R(t)= the record in the race and t = the number of years snce 1920. a) Find a linear function that fits the data R(t) = b) Use the function in (a) to predict the record in 2003 and in 2006. 2003...
Thursday, March 11, 2010 at 1:25am

Math
Write an equation of the line containing the given point and parellel to the given line. (2,-6); 9x-5y=4
Thursday, March 11, 2010 at 1:20am

Math(Please check)
Complete the identity secQ - 1/secQ = secQ Is this correct?
Thursday, March 11, 2010 at 12:56am

Chem hw!
1. What pressure would be needed to compress 25.1 mL of hydrogen at 1.01 atm to 25% of its original volume? 2. If the pressure on a 1.04-L sample of gas is doubled at constant temperature, what will be the new volume of the gas? 3. A 1.04-L sample of gas at 759 mm Hg pressure ...
Thursday, March 11, 2010 at 12:18am

Chem hw!
1. What pressure would be needed to compress 25.1 mL of hydrogen at 1.01 atm to 25% of its original volume? 2. If the pressure on a 1.04-L sample of gas is doubled at constant temperature, what will be the new volume of the gas? 3. A 1.04-L sample of gas at 759 mm Hg pressure ...
Thursday, March 11, 2010 at 12:18am

12th grade math
What is the distance between the origin and the point (5, 12)? If necessary, round your answer to two decimal places.
Wednesday, March 10, 2010 at 10:45pm

math 156
Describe two different ways that you could represent the number 0.80.
Wednesday, March 10, 2010 at 10:39pm

math
The volume of a rectangular prism is 2x^3+5x^2+x-2. The height of the prism is 2x-1, and the length of the prism is x+2. Find the width of the prism.
Wednesday, March 10, 2010 at 10:38pm

math
point c (2,1) is the midpoint of line segment ab. Find the coordinates of points a and b if they are both on axes. explain and justify your reasoning
Wednesday, March 10, 2010 at 10:15pm

math 116
After solving a system of linear equations, how can you check your answer to determine whether it is correct? Demonstrate the process of checking an answer with an example.
Wednesday, March 10, 2010 at 10:14pm

Math
If I have ((square root of 13)+(6))^2 would it be factored as -((square root of 13)+(6))((square root of 13)-(6)) or -((square root of 13)+(6))((square root of 13)+(6)) ?
Wednesday, March 10, 2010 at 9:42pm

Math 30
If cos theta = -sin theta,then sin^2 theta is what?
Wednesday, March 10, 2010 at 9:36pm

Math
Three questions, what is -7 3/10 - -4 4/5? -1 5/9 x -2 1/7? -12 divided by 1/3? How do you solve them?
Wednesday, March 10, 2010 at 9:09pm

math
solve 2/3 + 4/6
Wednesday, March 10, 2010 at 9:04pm

math
Give the dimensions of a picture frame that is a golden rectangle.
Wednesday, March 10, 2010 at 8:55pm

math
A graphics designer wants to use a star-shaped polygon with 10 points and a point angle of 12 degrees. What should be the dent angle of this polygon?
Wednesday, March 10, 2010 at 8:54pm

Math
Ted put several different integers in order from least to greatest. He then put the same integers in order from greatest to least. Both times the same n umber was third in order.
Wednesday, March 10, 2010 at 8:30pm

Math - Calculus
Show that the equation log y = 1.54 - .008x - .658 log x is equivalent to y = 34.7 (1.0186)^(-x) * x^(-.658)
Wednesday, March 10, 2010 at 7:38pm

2nd grade
2nd grade math measurement
Wednesday, March 10, 2010 at 7:23pm

Math116
Solve by elimination 5r-3s=13 3r+5s=69
Wednesday, March 10, 2010 at 7:22pm

Math 6th
Why do eskimos wash their clothes out tide? (can only be 10 letters)
Wednesday, March 10, 2010 at 6:52pm

Math(Please help)
1)tan 5 degrees + tan 25 degrees / 1 tan 5 degrees tan 25 degrees = sqrt 3 / 3 Am I correct? 2) Complete the identity tan^2Q - 3sinQtanQsecQ = -2tan^2Q Correct?
Wednesday, March 10, 2010 at 6:16pm

Math 30 Trig
For the equation 4 cos theta - sqrt12 =0, where 0< theta < or equal 2pi determine the measure of theta. One answer I got was 2pi/3, 4pi/3 and another time it totally different 5 pi/6, 7pi/6. Are either of these right if not HELP!
Wednesday, March 10, 2010 at 6:10pm

Math
Is there a difference between solving a system of equations by the algebraic method and the graphical method? Why or why not?
Wednesday, March 10, 2010 at 6:00pm

Math(Please help)
1)tan 5 degrees + tan 25 degrees / 1 tan 5 degrees tan 25 degrees = sqrt 3 / 3 Am I correct? 2) Complete the identity tan^2Q - 3sinQtanQsecQ = -2tan^2Q Correct?
Wednesday, March 10, 2010 at 5:28pm

Math
Solve the proportion x-4/9=x/18
Wednesday, March 10, 2010 at 5:20pm

math
4 times the sum of a and b
Wednesday, March 10, 2010 at 5:02pm

Mathtoo
what is the least common denominator of 3/5+1/3
Wednesday, March 10, 2010 at 4:40pm

Math
A juice mix requires the addition of 32 oz of water for every 12 oz of juice concentrate. How much juice mix may be made from 15 oz of concentrate?
Wednesday, March 10, 2010 at 4:35pm

Math
Consider the equation below. (Give your answers correct to two decimal places.) f(x) = 8sin(x) + 8cos(x) 0 ≤ x ≤ 2 (a) Find the intervals on which f is increasing. (Enter the interval that contains smaller numbers first.) ( , ) union ( , ) Find the interval on whic...
Wednesday, March 10, 2010 at 4:16pm

Math
Simplify: 1-m ——— m ————— m-1 — m
Wednesday, March 10, 2010 at 4:08pm

math
A $5,000 loan is offered for 18 months at 7.50% compounded quarterly. For full marks your answer(s) should be rounded to the nearest cent.
Wednesday, March 10, 2010 at 4:01pm

Math 157
five numbers are to be picked, without repetition from 44 numbers to determine the winner of the fortune five game in the state lottery. If the order of the numbers is insignificant how many different ways can a winning quintuple be seleted? what is the probability of winning?
Wednesday, March 10, 2010 at 2:03pm

math
josh buys concert tickets worth $180, he then keeps 2 of the tickets and sells the rest for 9 dollars more, he make a total profit of $36, after selling all the tickets. what was the original ticket price? howmuch people bought the ticket?
Wednesday, March 10, 2010 at 1:50pm

math
Short math quadractic equation word problem*best answer? josh buys concert tickets worth $180, he then keeps 2 of the tickets and sells the rest for 9 dollars more, he make a total profit of $36, after selling all the tickets. what was the original ticket price?
Wednesday, March 10, 2010 at 1:42pm

Math
Write 0.36 as a fraction.
Wednesday, March 10, 2010 at 1:35pm

Math
Two cards are drawn at random from a standard deck of 52 cards. What is the probability that both cards are queens?
Wednesday, March 10, 2010 at 1:34pm

Math
Find the first three iterates of the function f(x)=x^2-2,if the initial value is -2.
Wednesday, March 10, 2010 at 1:30pm

math logic
A group of five students needs to break into two smaller groups in order to tackle the two different assignments associated with a larger group project. Naturally, they feel that it would be most fair to break into groups of two and three. How many ways are there to do this? C...
Wednesday, March 10, 2010 at 1:27pm

Math
Find the probability of tossing exactly 2 heads on 3 tosses of a fair coin.
Wednesday, March 10, 2010 at 1:25pm

Math
How many ways can 9 keys be arranged on a circular key ring?
Wednesday, March 10, 2010 at 1:21pm

Math
Find P(5,2).
Wednesday, March 10, 2010 at 1:20pm

math
A set of data is normally distributed with a mean of 16 and a standard deviation of 0.03. What percent of the data is between 15.2 and 16?
Wednesday, March 10, 2010 at 1:18pm

math
Factor completely, or state that the polynomial is prime. 375x^3 - 192y^3
Wednesday, March 10, 2010 at 12:53pm

MATH
tan è = RISE OVER RUN, RISE IS 10 AN D RUN IS 6 tan è = 10/6 SOLVE è
Wednesday, March 10, 2010 at 12:40pm

Maths
if q>0, how can u use the graph of y =sin theta to draw the graph of y =sin theta +q?
Wednesday, March 10, 2010 at 11:18am

MATH
CAN SOMEONE HELP ME WITH THIS PROBLEM HAT SIZE HEAD CIRCUM. HEAD CIRCUM- 7 1/2 20 3/5 60 X X 59 FOR THE FIRST X ROUND TO THE NEAREST EIGHT INCH. fOR THE SECOND X ROUND TO THE NEAREST FIFTH INCH AS NEEDED.
Wednesday, March 10, 2010 at 11:14am

math
I have a couple of math questions that i cant seem to get to work out. can someone help me please.? 1.) (x/x+6)-(6/x-6)=(x^2+36)/(x^2-36) 2.) (r-2)-(2-r)=0 3.) add (8/ty^2)+(9/t^2y) 4.)add (7/w)+(8/w^2) 5.)add ((r+10)/r)+(r/(r+10)) 6.) divide ((z^2-1)/16z+16) / ((z-1)/4) 7.) f...
Wednesday, March 10, 2010 at 11:02am

math
Factor using the formula for the sum or difference of two cubes. x^6 - 27y^3
Wednesday, March 10, 2010 at 10:45am

math
Factor completely, or state that the trinomial is prime. 3y^3 + 15y^2 + 18y
Wednesday, March 10, 2010 at 10:44am

math
1.Use factoring to solve the quadratic equation. x2 - 64 = 63x
Wednesday, March 10, 2010 at 10:44am

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