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October 25, 2014

Homework Help: Math

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Recent Math Questions

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Math
According to the 2010 census data , the population of Texas was about 2.5*10^7 people. The land area of Texas is about 2.6*10^5 m^2. Divide the average number of people per square mile in 2010. A. 0.96*10^2 B. 9.6*10^1 C. 0.96*10^35 D. 9.6*10^12 Is the answer A?
Monday, October 13, 2014 at 9:16pm

Math
Find the Synthetic Division: (10x^4-50x^3-800)/(x-6)
Monday, October 13, 2014 at 9:16pm

math
Find two positive decimals a and b that make the following statement true. Then find two positive decimals a and b that make the statement false. If a < 1 and b < 1, then a ÷ b < 1.
Monday, October 13, 2014 at 9:15pm

Math
Which is irrational? A. 0.117117117... B. 0.8596873205... C. 0.812812812812... D. 0.605605605... Is the answer B?
Monday, October 13, 2014 at 8:58pm

math physics
A meteorite is a solid composed of stone and/or metal material from outer space that passes through the atmosphere and hits the earth’s surface. Find the kinetic energy of a meteorite with mass 250 kg that hits the earth at 25 km/s. Given: m=250kg v=2.5E4m/s <<< ...
Monday, October 13, 2014 at 8:54pm

math physics
A meteorite is a solid composed of stone and/or metal material from outer space that passes through the atmosphere and hits the earth’s surface. Find the kinetic energy of a meteorite with mass 250 kg that hits the earth at 25 km/s. Given: m=250kg v=2.5E4m/s <<< ...
Monday, October 13, 2014 at 8:54pm

math physics
A meteorite is a solid composed of stone and/or metal material from outer space that passes through the atmosphere and hits the earth’s surface. Find the kinetic energy of a meteorite with mass 250 kg that hits the earth at 25 km/s. Given: m=250kg v=2.5E4m/s <<< ...
Monday, October 13, 2014 at 8:54pm

Math
Harold bought two loaves of raisin bread to share with his friends. If there are 12 people total, including Harold, how much bread does each person have? A. 0.06 B. 0.16 THE 6 keeps going on C. 0.25 D. 0.3 And the 3 keeps going on Is the answer C?
Monday, October 13, 2014 at 8:50pm

math
there are 40 students at Bali high who plays stringed instruments. of these, 1/4 play viola, 1/5 play cello, and the rest play violin. how many students play violin?
Monday, October 13, 2014 at 8:47pm

Math
One nanometer is about 0.00000003937 of an inch. What is this number in scientific notation? A. 3.937*10^-8 B. 3.937*10^8 C. 39.37*10^-7 D. 39.37*10^7 Is the answer A? Thanks
Monday, October 13, 2014 at 8:41pm

Math. Word problem
Strawberries are on sale for $2.30 per pound. Noah bought a bag of strawberries for $8.05. How many pounds of strawberries did Noah buy?
Monday, October 13, 2014 at 8:31pm

Math Proof
Let {X_n} be a sequence of real numbers that is bounded above by M and such that X_n-->x Prove that x<=M
Monday, October 13, 2014 at 8:30pm

Math
If there is 1/2 if a pizza and Jonas wants only 1/3 of it, how much of the pizza will he eat? A. 1/5 B. 2/5 C. 1/6 D. 2/6 Is the answer B? Thanks
Monday, October 13, 2014 at 8:27pm

Math
The king's ship sank with 8 gold bars aboard. The king paid captain nemo 4/5 of one bar for finding the gold. The captain gave 1/2 of his gold to charity. What fraction of a bar went to charity?
Monday, October 13, 2014 at 8:26pm

Math
What is 0.32 written as a fraction in simplest form/ A. 32/100 B. 8/25 C. 100/32 D. 16/25 Is the answer B? Thanks
Monday, October 13, 2014 at 8:21pm

math
t has been discovered in a certain state that the relationship between the number of snow shovels demanded varies linearly with its price. When the price per item was $ 38 ,2200 items were demanded; When the price was $ 49 , 2125 items were demanded. Determine the price per ...
Monday, October 13, 2014 at 8:05pm

Math
Divide. Write the answer in simplest form. 8 1/6 divided by 2 1/24. I got 4 5/6 is this right? If so what's the simplest form.
Monday, October 13, 2014 at 7:56pm

Math
What percent o the student population are girls? Please show work!
Monday, October 13, 2014 at 7:37pm

math
equivalent expression -3(x-7)
Monday, October 13, 2014 at 7:26pm

math
total salary is $6650000 per year total gross area it service is 3.5*10000000 squar feet the unit cost, in dollars per square foot,for this group is
Monday, October 13, 2014 at 7:23pm

math
whats is 0.5l/s=gal/h
Monday, October 13, 2014 at 7:22pm

Math
Xander says that the place value sections method, the expanded notation method, and the algebraic notation method of multiplying a one-digit number by a two-digit number are pretty much the same. Do you agree or disagree? Explain.
Monday, October 13, 2014 at 7:06pm

math
The function y_p(t) =ln(4 + 2 t), t > -4/2, is a particular solution to the differential equation y''+8y=g(t). Find g(t).
Monday, October 13, 2014 at 6:42pm

Math
Where should the decimal be placed in the product of the following problem? (1.632) (0.81)=132192
Monday, October 13, 2014 at 6:40pm

Math
Find the Synthetic Division: (10x^4-50x^3-800)/(x-6)
Monday, October 13, 2014 at 6:39pm

Math
The equation -4x+y=0 relates to the number of pages in a photo album y to the number of picture sin the album x. Tell whether the relationship is a direct variation.Explain
Monday, October 13, 2014 at 6:34pm

Math
Write a real-world context for the following ratio: Five to three
Monday, October 13, 2014 at 6:33pm

math
7x4-4 devided 2=26
Monday, October 13, 2014 at 6:26pm

Math
Which is always a correct conclusion about the quantities in the function y=x+4 A. THe variable x is always 4 more than y B. When the value of x is negative the value of y is also negative C.The variable y is always greater than x D.As the value of x increases the value of y ...
Monday, October 13, 2014 at 6:18pm

Math
merideths heart beats 63 times in 45 seconds how many times will her heart beat in one hour 5040 timwa
Monday, October 13, 2014 at 6:16pm

Math
How many 1/6 pound hamburgers can be made from 1/2 pound of hamburger meat?
Monday, October 13, 2014 at 6:15pm

Math
If Mia receives $72.20 for $1,805.00 in sales, how much must her sales be in order to receive $150 in commission
Monday, October 13, 2014 at 6:13pm

Math
It takes 11 cups of flour to make 3 loaves is bread. What is the ratio of cups of flour to loaves of bread? Write the ratio 3 ways: Word form: Colon form: Fraction form:
Monday, October 13, 2014 at 6:13pm

Math
6 divided by -3/4
Monday, October 13, 2014 at 6:10pm

Math
1/3 divided by 2
Monday, October 13, 2014 at 6:02pm

Math
-2 divided by one half -4?
Monday, October 13, 2014 at 6:01pm

Math
What is the direct variation function? Is it y/x=k?
Monday, October 13, 2014 at 5:57pm

Math
3^-2/n and 7ab^-2/3w .
Monday, October 13, 2014 at 5:57pm

Math
A right pyramid has a surface area of 258 cm2. A right cone has a base radius of 4 cm. The cone and pyramid have equal surface areas. What is the height of the cone to the nearest tenth of a centimetre?
Monday, October 13, 2014 at 5:57pm

math
average cost for traning is $200 per hour per person 60 person is employs and scheduled for 25hours per year. how much would it cost
Monday, October 13, 2014 at 5:41pm

Math
If point A is located at (9, -2), which of the following points would be located 9 units away from point A? A. (9,-7) B. (1,-2) C. (9,-11) D. (9,-9) I believe this would be C (9,-11) would I be right? Thanks for the help.
Monday, October 13, 2014 at 5:34pm

math
the normal work load of the members of an operation, maintenance and repair group is forty hours per week. it employs 75 persons. and each is scheduled for two weeks vacation per year. what is the total amount of time worked by this group in a year?
Monday, October 13, 2014 at 5:26pm

math
Need help on this problem. The mass of a proton is about 1.7 x 10^-24g. The mass of a neutron is about the same as a proton. The nucleus of an atom of carbon has 6 protons and 6 neutrons. The mass of the nucleus is about 2 x 10^-26 units. what is the best choice for the units ...
Monday, October 13, 2014 at 5:09pm

Math
6 hundred 2 tens = 5 hundreds ? Tens
Monday, October 13, 2014 at 5:08pm

math
write a real word problem and equation using t eaqul 5
Monday, October 13, 2014 at 4:54pm

math
a cell phone company charges $10 per month, for up to 500 text messages, and $.15 for each additional text messages. Stanley was charged $14.50 last month for text messages. Write an equation to find the number of text messages over 500 he sent and received last month
Monday, October 13, 2014 at 4:45pm

math
1/2X+3=9 solve for x. I'm confused
Monday, October 13, 2014 at 4:23pm

2 STEP MATH EQUATIONS
eric has a dog walking business. He charges $13per dog he walks and $6 for the water he buys for the dogs. If he made $97 on Monday, write an equation to find the number of dogs he walked on Monday. I got an answer of 7 dogs on Monday. Then, in addition to dog walking, on ...
Monday, October 13, 2014 at 4:20pm

8th Grade Math
Please help! Which statement is false? A. The number zero is a rational number. B. Some irrational numbers are also rational numbers. C. Every irrational number is a real number. D. Every integer is a rational number. I thinks its D. Please help!
Monday, October 13, 2014 at 4:03pm

math
You are given a pair of equations, one representing a supply curve and the other representing a demand curve, where p is the unit price for x items. 80 p + x - 380 = 0 and 84 p - x - 40 = 0 a. Identify which is the supply curve and demand curve and the appropriate domain. Put ...
Monday, October 13, 2014 at 3:54pm

Math
For each object, its surface area, and some dimensions are given. Calculate the dimension indicated by the variable to the nearest tenth of a unit. a) right cone SA=7012mm^2 GIVEN=diameter of 48mm b) right square pyramid SA=65.5m^2 GIVEN=length of 3.5m
Monday, October 13, 2014 at 3:25pm

Math
An urn contains 3 red, 4 orange, and 6 yellow marbles. 2 marbles are selected without replacement. Find the probability that the second marble selected is orange given that the first marble selected is yellow.
Monday, October 13, 2014 at 2:35pm

Business Math
Molly Ellen, bookkeeper for Keystone Company, forgot to send in the payroll taxes due on April 15. She sent in the payment on November 8, The IRS sent her a penalty charge of 6.00% simple interest on the unpaid taxes of $1000. Calculate the penalty. (Remember that the ...
Monday, October 13, 2014 at 1:48pm

math
brenda is planning her birthday party.she wants to have 10.92 liters of punch,6.5 gallons of icecream,3.9 pounds of fudge,and 25 guests at the birthday party
Monday, October 13, 2014 at 1:41pm

Math
A simplified version of the expression 2sinθ (cos θ)(cotθ) is
Monday, October 13, 2014 at 12:50pm

Math
Radiation from the Sunkeeps us all alive, but with the thinning of the ozone layer, it is important to limitexposure. The intensity of radiation is inverselyproportional to the square of the distance thatthe Sun’s rays travel.The formula I=k/d^2 models the ...
Monday, October 13, 2014 at 12:08pm

chemistry/math
5.0 moles of solid sodium chloride (NaCl) are used to prepare a 5.0 M NaCl solution. What is the volume of the solution?
Monday, October 13, 2014 at 12:06pm

Math
Rewrite the expression 2sinθ(cosθ)(cotθ) in terms of sine or cosine.
Monday, October 13, 2014 at 11:59am

Math
Starting with the formula mg sin A = umg cos A, you can derive tan A = u to find the angle A of an incline and the coefficient of friction u of objects on the incline.
Monday, October 13, 2014 at 11:56am

Math
1) An aerobics class is being offered at the ABC body gym. Nonmembers pay $4 per class while member pay a monthly fee of $10 plus $2 per class. a. Create a linear system to represent the two options. b. At how many classes will the cost be the same? What is that cost? c. When ...
Monday, October 13, 2014 at 11:26am

Math
Alan is using the equation mg sin A = umg cos A to determine the coefficient of friction, u, between a flat rock and a metal ramp. Find u to the nearest hundredth, if the rock begins to slide at 19º.
Monday, October 13, 2014 at 10:49am

math
a telephone pole is supported by two cables attached to points on the pole 15 ft above ground and to points on the level ground 8 ft from the foot of the pole. what is the total length of the two cables
Monday, October 13, 2014 at 10:36am

Math
2)Jenny wants to buy a new car, and she has narrowed her choices to two models. Model A sells for $12,500, gets 25mi/gal, and costs $300 a year for insurance Model B sells for $16,100, gets 36 mi/gal, and costs $400 a year for insurance. Jenny drives about 36,000 miles a year...
Monday, October 13, 2014 at 2:09am

Math
3) While traveling for vacation, you have decided to divide your lodging between a resort, and a regular stay hotel. Let x represent the number of nights you will spend in a resort, and let y represent the number of nights you will spend in a regular stay hotel. a. Write a ...
Monday, October 13, 2014 at 2:08am

College Math
5) A landscaper wants to make a small planter and surround it with edging material for a client. She is deciding between two designs. Design 1: A square planter Design 2: A circular planter Edging material costs $4 per ft. for the straight variety which she would use for ...
Monday, October 13, 2014 at 2:08am

MATH 101
Factor: 15x2(2x + 3) + 41x(2x + 3) + 28(2x + 3)
Monday, October 13, 2014 at 1:56am

MATH 101
Factor: 1200+1640t+280t^2
Monday, October 13, 2014 at 1:56am

math
a rectangular vegetable bed 10m long and 6m wide is edged on four sides with 2m wide border. find the area of the border
Monday, October 13, 2014 at 1:38am

Math Statistics
Answer the following. Show your work to get credit. Exam scores are normally distributed with a mean of 81 and a standard deviation of 9. a) What is the minimum score one must have to be in the top 4% of the students taking the exam? b) What percentage of scores are below 90? ...
Monday, October 13, 2014 at 1:31am

MATH 101
Factor completely. Be sure to factor out the greatest common factor first if it is other than 1. (If the polynomial is prime, enter PRIME.) 56a^2+39ab-27b^2
Monday, October 13, 2014 at 1:24am

Math
Micheal gave 1/12 of his money to Sally and 1/5 of his remaining money to Heidi. If he still had $704, how much money did he have originally? The answer is $960 I was told to take the fraction of what was left and multiply it by what Heidi took: 1/12 + (11/12 x 1/5) = 11/60 11...
Monday, October 13, 2014 at 1:03am

Math
Every item in the Just a Dollar store is priced at $1.00. When Mary Jo opens the store, there is $122.00 in the cash register. When she counts the money in the cash register at the end of the day, the total is $1,065.95. If the sales tax rate is 8.5%, how many items were sold ...
Monday, October 13, 2014 at 12:37am

Math
If the product of 4 consecutive integers is equal to one of the integers, what is the largest possible value of one of the integers? The answer is 3, but I do not understand how it is 3. I tried writing out 4 consecutive #'s such as 1,2,3,4 or 0,1,2,3. 0 x 1 x 2 x 3 = 0
Monday, October 13, 2014 at 12:28am

Statistics
A researcher measures the following scores for a group of people. The X variable is the number of errors on a math test, and the Y variable is the person’s level of satisfaction with his/her performance. (a) With such ratio scores, what should the researcher conclude ...
Monday, October 13, 2014 at 12:19am

Math-Urgent help please.
Two cards are selected, without replacing the first card, from a standard deck. Find the probability of selecting an ace (A), and then selecting a 4 (B): (choose 2) 0.603% 0.592 0.592% They are dependent events. 0.00592
Monday, October 13, 2014 at 12:02am

Finance math
9. Compute the present value of $4,000 paid in five years using the following discount rates: 10 percent in year 1, 2 percent in year 2, 12 percent in year 3, and 9 percent in years 4 and 5.
Sunday, October 12, 2014 at 11:52pm

Math
A store selling art supplies finds that they can sell x sketch pads each week at a price of p dollars each, according to the formula x = 2100 - 300p. What price should they charge if they want to sell at least 600 pads each week? (First use the formula to write an inequality ...
Sunday, October 12, 2014 at 11:28pm

Math
If 8% of c is equal to 12% of d, which of the following is equal to c + d? a)1.5d b)2d c)2.5d d)3d e)5d I tried replacing the variables with numbers to make it easier. I came up with 8% of 600 = 12% of 400, both equal 48. And then 600 + 400 = 1000 but thats not one of the ...
Sunday, October 12, 2014 at 10:04pm

math
Tina and Bruce are each rolling a 1 to 6 number cube. They are looking for different ways to roll two factors whose product is greater than 14. How many different ways will they find? Product means to multiply so 4x5, 3x5,6x5,. I chose 1 to 6 SO I have three times.
Sunday, October 12, 2014 at 9:12pm

3rd grade math
Where did i find word problems specially for number rounding, I also need the methods and answers, because teacher marked compleatly wrong, for what i taught to kid. Can any body help please
Sunday, October 12, 2014 at 8:58pm

Math
Is this correct -18+43= 75
Sunday, October 12, 2014 at 7:54pm

Math
How can you check the answer to a decimal multiplication problem?
Sunday, October 12, 2014 at 7:30pm

math
in 1933 wiley post flew around teh world in 7 DAYS 18 HOURS. WILEYS TRIP WOULD BEST BE DESCRIBED AS FLYING AROUND THE ? OF TEH EARTH.
Sunday, October 12, 2014 at 7:08pm

math
Selena and her friends went out to dinner. The bill came to $56.25. If the the tax rate is 7.5 percent and they left a 15 percent tip. How much money did they spend at the restaurant ?
Sunday, October 12, 2014 at 7:06pm

Math
Please help me on this one! ABCD x 9 ----- DCBA What is A,B,C,and D?
Sunday, October 12, 2014 at 7:01pm

math
Selena and her friends went out to dinner. The bill came to $56.25. If the the tax rate is 7.5 percent and they left a 15 percent tip. How much money did they spend at the restaurant ?
Sunday, October 12, 2014 at 5:52pm

Math
A number and its absolute value are equal. If you subtract 2 from the number, the new number and its absolute value are not equal. What do you know about this number? What is a possible number that satisfies these conditions?
Sunday, October 12, 2014 at 3:52pm

math
the scale used to make a model of a car is 1:18. the length of the model is 91/2 inches. how many feet long is the actual car.
Sunday, October 12, 2014 at 2:17pm

Math
A photocopier copies 80 pages in 4 minutes. How much time will he take to copy 200 pages? Can someone pleas explain how to do it.
Sunday, October 12, 2014 at 11:56am

math
where will the hand of a clock stop if it,start at 4 and makes half revolution ?
Sunday, October 12, 2014 at 10:32am

Math
Solve this in Long Division. (x-6)/(10x^4-50x^3-800)
Sunday, October 12, 2014 at 10:16am

Math
A rancher with 750ft of fencing wants to enclose a large rectangle area and then divide it into four equal-sized pens to hold animals. If the maximum area is desired to ensure humane treatment of the anima, what should be the dimensions of the larger rectangle. What should be ...
Sunday, October 12, 2014 at 12:55am

math
I have a 2x4 that's 8'long,how manyn 1 and 1/2 foot boards can I cut out of it?
Saturday, October 11, 2014 at 10:36pm

math
how to write 700+3000+40000+12+80 in standard form
Saturday, October 11, 2014 at 10:18pm

Math help
Order the number from least to greatest -44, -8 1/2, 0, 6.2, -12, -6.4, 14, 7, -6
Saturday, October 11, 2014 at 8:54pm

Math College (Algebra)
How to solve this system? x + [(3x-y)/(x^2+y^2)] = 3 y - [(x+3y)/(x^2+y^2)] = 0
Saturday, October 11, 2014 at 7:19pm

Math
If you invested $500 in an account that pays 12 % a compounded weekly, how long would it take for your deposit to triple?
Saturday, October 11, 2014 at 4:23pm

math
How many times do you need to multiply 6.5066 by ten to get 650.66?
Saturday, October 11, 2014 at 3:46pm

Math
The area, a of a rectangle whos length is twice its width, w is described by the equation, a=(w)(2w)=2w^2
Saturday, October 11, 2014 at 12:04pm

math
how much greater is the volume of a cube whose edge is 5 inches than the volume of a cube whose edge is 4 inches?
Saturday, October 11, 2014 at 11:49am

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