Tuesday
June 18, 2013

Homework Help: Math

Branches of Math

Recent Homework Questions About Math

Math
Can someone please double check my answers. 1. What pattern does the logarithmic function exhibit? a. y = b+a(lnx) b. y = a+b(lnx) c. y = ax+b d. y = axb I think A and B both look right..I just went with B. 2. Let f(x) = log6x and g(x) = log1/2x. For all x>1, f(x)>g(x) ...
Tuesday, June 18, 2013 at 9:25pm

math
solve the system of equations y = x + 4 y = x^2 + 9x +16
Tuesday, June 18, 2013 at 7:55pm

math check
Assume that z is the test statistic. (Give your answers correct to two decimal places.) (d) Calculate the value of z for Ho: ì = 81, ó = 13.3, n = 51, x = 79.7. -1.16 is my answer and it is wrong, can someone tell me how I missed this one, done several and got ...
Tuesday, June 18, 2013 at 7:40pm

Math check
A sample of 30 of 178 funded projects revealed that 12 were valued at \$17,360 each and 18 were valued at \$20,280 each. From the sample data, estimate the total value of the funding for all the projects. (Enter your answers to two decimal places.) \$ 35.60 was my answer
Tuesday, June 18, 2013 at 7:33pm

math
Express your answer as a decimal (to the nearest hundredth). What part of an hour is 40 minutes?
Tuesday, June 18, 2013 at 7:20pm

math
On Team B 80% of the football players weigh more than 200 pounds. If 41 men are on the team, how many weigh more than 200 pounds?
Tuesday, June 18, 2013 at 7:19pm

Math
George studied 1/4 hour on Monday and 3/8 hour on Tuesday. How long did he study altogether on both days?
Tuesday, June 18, 2013 at 7:19pm

Math
Determine the digits of Y from these clues. The digits of Y add to 18. The first digit is 3 times the third digit. The second digit is 2 times the third digit. Y is a three digit number.
Tuesday, June 18, 2013 at 7:19pm

math
Can someone please double check my answers. 1. What pattern does the logarithmic function exhibit? a. y = b+a(lnx) b. y = a+b(lnx) c. y = ax+b d. y = axb I think A and B both look right..I just went with B. 2. Let f(x) = log6x and g(x) = log1/2x. For all x>1, f(x)>g(x) ...
Tuesday, June 18, 2013 at 6:42pm

math
a number rounds off to 4000.the digits in the hundreds place is twice the digits in the tens place.the sum of the digits is 12.the number uses only two different digits.find the number.
Tuesday, June 18, 2013 at 5:45pm

math
A number rounds off to 4000.The digits in the hundreds place is twice the digits in the tens place.The sum of the digits is 12.The number uses only two diffirent digits.find the number.
Tuesday, June 18, 2013 at 5:34pm

math
On May 23, Samantha Best borrowed \$4,000 from the Tri City Credit Union at 13% for 160 days. The credit union uses the exact interest method. What was the amount of interest on the loan?
Tuesday, June 18, 2013 at 5:16pm

math
a.12 is 80% of what number? b.4/6 is 1/9 of what number? c.52 is 13% of what number?
Tuesday, June 18, 2013 at 4:52pm

math
Solve the equation and check your solution 2/5+1/y-5=y-7/5y-25.
Tuesday, June 18, 2013 at 4:41pm

math
When the Senior class decided to order T-shirts, they were quoted a price of \$7.50 per shirt plus a setup fee. The total cost for 300 shirts was \$2,450. Write an equation in the form y = mx + b that represents the cost, y, for x shirts.
Tuesday, June 18, 2013 at 4:15pm

math
2/5+1/y+5=y-7/5y-25
Tuesday, June 18, 2013 at 4:06pm

Math check
Two new drugs are being tested for their effect on the number of days a patient must remain hospitalized after surgery. A control group is receiving a placebo, and two treatment groups are each receiving one of two new drugs, both developed to promote recovery. The null ...
Tuesday, June 18, 2013 at 4:06pm

Math
Maximize P=3x+2y subject to 6x+3y<=24 3x+6y=<30 X,Y>=10
Tuesday, June 18, 2013 at 3:28pm

Math
A company manufactirung snowboards has fixed costs of \$200 per day and total cost of \$3800 per day at a daily output of 20 boards. (A( Assuming that the total cost per day, C(x), is linearly related to the taotal out per dau,x, write an equation for the xost function (B) The ...
Tuesday, June 18, 2013 at 3:23pm

Math
Can someone please double check my answers (My answers are in Capital) 1. If you produce a million products a day and you want to test ten of them to determine if they are up to standard, which ones will you choose? a. The second ten B. TEN RANDOM UNITS c. The last ten d. The ...
Tuesday, June 18, 2013 at 3:21pm

math
Find the sum of all primes p, such that p divides up, where up is the p- th Fibonacci number. please tell me the answer it's urgent about this..///
Tuesday, June 18, 2013 at 2:07pm

math
S=1+2(1/5)+3(1/5)^2+4(1/5)^3…. If S=a/b, where a and b are co prime positive integers, what is the value of a+b?
Tuesday, June 18, 2013 at 1:50pm

math
what is the net weight of 36 items that weigh 36 grams each in pounds or ounces
Tuesday, June 18, 2013 at 1:12pm

Math
Cashew nuts sell for \$21.00/kg. Brazil nuts sell for \$15.00/kg. a distributed sold at total of 120kg of cashew and Brazil nuts for 2244 dollars. What mass of each type of nut was sold?
Tuesday, June 18, 2013 at 12:55pm

Math
The phone company charges a flat rate of \$2.50 plus and additional \$0.50 each minute for a long-distance phone call. Write an equation to represent the total cost of making a long-distance phone call.
Tuesday, June 18, 2013 at 12:54pm

math check
Consider the following table and use the formulas that are given for computing the correlation coefficient. (Give your answer correct to two decimal places.) x 1 1 0 0 0 y 7 3 5 6 6 r = n xy − x y n x2 − x 2 n y2 − y 2 (1) r = SS(xy) SS(x) · SS(y) (2) ...
Tuesday, June 18, 2013 at 12:50pm

Math Algebra II
I am confuse how to solve a relation function such as f(x) = 1x -12. show me example on how resolve this problem
Tuesday, June 18, 2013 at 12:41pm

math
If z=−√2/2+√2/2 i, what is the value of −(z^−52)? i is the imaginary unit where i^2=-1
Tuesday, June 18, 2013 at 12:39pm

math formulas needed
Use the following table to answer the questions. (Give your answers correct to two decimal places.) x 1 1 3 3 5 5 7 7 9 9 y 3 2 6 1 3 3 3 2 5 3 (a) Find the equation of the line of best fit. y hat = + x (ii) Graph this equation on a scatter diagram. (Do this on paper. Your ...
Tuesday, June 18, 2013 at 12:36pm

math
A 999-digit number starts with 9. Every 2 consecutive digits is divisible by 17 or 23. There are 2 possibilities for the last 3 digits. What is the sum of these 2 possibilities?
Tuesday, June 18, 2013 at 12:24pm

math
Let α and β be the roots of 3x2+4x+9=0. Then (1+α)(1+β) can be expressed in the form ab, where a and b are coprime positive integers. Find a+b.
Tuesday, June 18, 2013 at 12:15pm

Math
γ is a permutation on eight elements, though you are not told which permutation it is. If γ is applied to an 8-element set, what is the minimum number of additional times we must apply γ to the resulting set in order to guarantee the set is back in its original ...
Tuesday, June 18, 2013 at 11:46am

Math check and help on one part
Two new drugs are being tested for their effect on the number of days a patient must remain hospitalized after surgery. A control group is receiving a placebo, and two treatment groups are each receiving one of two new drugs, both developed to promote recovery. The null ...
Tuesday, June 18, 2013 at 11:44am

Math
Find the largest possible degree n≤1000 of a polynomial p(x) such that: p(i)=i for every integer i with 1≤i≤n p(−1)=1671 p(0) is an integer (not necessarily 0).
Tuesday, June 18, 2013 at 11:10am

Math
γ is a permutation on eight elements, though you are not told which permutation it is. If γ is applied to an 8-element set, what is the minimum number of additional timeswe must apply γ to the resulting set in order to guarantee the set is back in its original ...
Tuesday, June 18, 2013 at 10:54am

math
What is the √(5² - 3²) ? √(25-9) √16 = 4 or (√5²-3²)½ 5-3 = 2
Tuesday, June 18, 2013 at 9:28am

Math
Construct a number out of the several other numbers by using BODMAS. e.g Make 5 using 1,2 and 3. Answer is (3 + 2) * 1. Question. Make 17 using 1,2,6 and 7
Tuesday, June 18, 2013 at 7:23am

Math
What would be the present value of \$365 a year for 20 years at a 14 % discount rate.
Tuesday, June 18, 2013 at 7:04am

grade 10 math
on a line the distance between 2x and 7x plus 80 is 142. Solve for x
Tuesday, June 18, 2013 at 4:13am

math
Jenny places 100 pennies on a table, with 30 showing heads and 70 showing tails. She chooses 40 distinct pennies uniformly at random and turns them over. That is, if a chosen penny was showing heads, she turns it to show tails; if a chosen penny was showing tails, she turns it...
Tuesday, June 18, 2013 at 1:27am

math
How many positive integers less than 1000000 have the sum of their digits equal to 7?
Tuesday, June 18, 2013 at 1:26am

math
3*8/6/7=
Tuesday, June 18, 2013 at 1:01am

Math
ABC is a triangle with ∠BAC=60∘. It has an incircle Γ, which is tangential to BC at D. It is given that BD=3 and DC=4. What is the value of [ABC]^2?
Monday, June 17, 2013 at 11:44pm

Math help
Consider the following table for a single-factor ANOVA. Level of Factor Replicates 1 2 3 1 0 4 4 2 0 5 6 3 1 3 6 (a) Find x1,2. (b) Find x2,1. (c) Find C1. (d) Find x. (e) Find (Ci )2.
Monday, June 17, 2013 at 11:43pm

math
please factorise 100-9x^2
Monday, June 17, 2013 at 11:33pm

Math
what is the present value of \$329 a year for 6 years at a 12 percent discount rate?
Monday, June 17, 2013 at 11:27pm

Math
12 years at 5% compounded annually what is the future value of \$557?
Monday, June 17, 2013 at 11:25pm

Math
My 30 year mortgage loan is \$255,413 with a monthly payment of \$1,321.33 at 6%. There are only 8 years remaining. what is the payoff?
Monday, June 17, 2013 at 11:21pm

Math
My monthly mortgage payments are \$4,369.66 for 30 years at 8%, what is the original cost of the house?
Monday, June 17, 2013 at 11:18pm

Math
What would be the cost of a car if my payments were \$453 monthly for 3 years at 6% per year
Monday, June 17, 2013 at 11:15pm

math
How Many years will it take to grow \$321 to a value of 450.22 at a compounded rate of 12 percent
Monday, June 17, 2013 at 11:13pm

Math
What is the present value of \$803 to be received 18 years from now at 10% discount rate.
Monday, June 17, 2013 at 11:11pm

Math
What is the future value of \$800 invested for 14 years at 11 percent compounded annually
Monday, June 17, 2013 at 11:09pm

MATH
Complete Problem 34 in Section 5.2 Exercises (Ch. 5) of Essentials of Geometry for College Students. 34. Given: ABC,/ AD bisects <BAC, and /AE=/ED Prove: AE/AC = BD/BC
Monday, June 17, 2013 at 10:46pm

Math
6 different numbers with a median of 61
Monday, June 17, 2013 at 10:17pm

Math
How do you weight probabilities to add up to 1? Example: Chance of rain .25 Chance of person wearing purple hat .1 Chance of person wearing red hat .05 Chance of person wearing black hat .2 Chance of person wearing yellow hat .1 Chance of person wearing white hat .3 So, You ...
Monday, June 17, 2013 at 8:43pm

Math help
Can someone give me simple formulas for the below problems. What I found is too confusing. A sample of 145 values is randomly selected from a population with mean, ì, equal to 45 and standard deviation, ó, equal to 23. (Give your answers correct to one decimal ...
Monday, June 17, 2013 at 8:35pm

Math help
A trucking firm delivers appliances for a large retail operation. The packages (or crates) have a mean weight of 306 lb. and a variance of 2209. (Give your answers correct to four decimal places.) (a) If a truck can carry 3940 lb. and 25 appliances need to be picked up, what ...
Monday, June 17, 2013 at 8:32pm

business math
Using the exact interest method (365 days), find the amount of interest on the following loan Principal Rate (%) Time (days) Exact Interest \$1,700 12½ % 33
Monday, June 17, 2013 at 8:08pm

math
which of the following percents can also be expressed as a mixed number? a.310% b.49% c.7.4% d.0.001%
Monday, June 17, 2013 at 7:43pm

4 grade math
Carlos Molly and Simon had to share \$100. Molly had 3 times as much money as Simon. Carlos had 2 times as much money as Molly. How much money did Carlos get? How much money did Simon get?
Monday, June 17, 2013 at 7:19pm

math
Can someone please double check my answers (My answers are in Capital) 1. If you produce a million products a day and you want to test ten of them to determine if they are up to standard, which ones will you choose? a. The second ten B. TEN RANDOM UNITS c. The last ten d. The ...
Monday, June 17, 2013 at 6:27pm

MATH
HOW MANY INCHES IS A FT
Monday, June 17, 2013 at 6:26pm

MATH
HOW MANY INCHES IS A YARD
Monday, June 17, 2013 at 6:21pm

math
the length of one board is 2feet10inches,and the length of another board is1yard1foot9inches.what is the total length of the 2boards put together?a.1yard4feet6inchesb.2yard1foot​7inchesc.1yard3feet20inchesd.3yard5inche​s
Monday, June 17, 2013 at 6:07pm

math
Can I please get my answers double checked? True or False 1. The tangent function is used to find the angel between two vectors. True 2. If two vectors are orthogonal, then their dot product is -1. False 3. The length of the projected vector is always shorter than the length ...
Monday, June 17, 2013 at 4:53pm

math
Find the reciprocal of the following number: -21/23
Monday, June 17, 2013 at 4:50pm

Math for Educators
24five x 3five ------ 132five 27eight 65eight +43eight ------- 157eight 75eight -37eight ------- 36eight 1213five/3five??? -If someone could please confirm my answers for the others as well as help me with the last division problem thank you! these are all equating in ...
Monday, June 17, 2013 at 4:47pm

Math for Educators
I am thinking of some #s less than 100. When I divide them by 2 there is a remainder of 1. When I divide them by 3 there is a remainder of 1. When I divide it by 4 there is a remainder of 1. However, when I divide by 5 there is no remainder. what are the #'s? - my answer ...
Monday, June 17, 2013 at 4:44pm

math
a car depreciates in by avalue of \$1000 per year. The original value of the car is \$30,000. Let V(x) be the value of the car in x years. Write the linear function that represent the value of the car in x years. what will be the value of the car after 7 years?
Monday, June 17, 2013 at 4:35pm

Math
In first gear, or low gear, an automobile's engine runs about three times as fast as the drive shaft. In second gear, the engine does not have to run as fast; usually it runs about 1.6 times faster than the drive shaft. Finally, in third, or high gear, the engine runs at ...
Monday, June 17, 2013 at 3:18pm

Math
I = E/R A car has a 12 volt battery. The engine has a resistance of 0.22 ohms. How many amps will be drawn from the battery when the key is turned? I (to the nearest hundredth) = amperes
Monday, June 17, 2013 at 3:17pm

math
Find the sum of all primes p, such that p divides up, where up is the p-th Fibonacci number.
Monday, June 17, 2013 at 3:03pm

math
The real numbers x and y satisfy the nonlinear system of equations {2x^2 − 6xy + 2y^2+ 43x + 43y = 174 x^2 + y^2 + 5x + 5y = 30. Find the largest possible value of |xy|.
Monday, June 17, 2013 at 3:02pm

math
What is the sum of all possible positive integer values of n, such that n^2+19n+130 is a perfect square?
Monday, June 17, 2013 at 3:00pm

math
S=1+2(1/5)+3(1/5)^2+4(1/5)^3…. If S=a/b, where a and b are coprime positive integers, what is the value of a+b?
Monday, June 17, 2013 at 3:00pm

math
Let S(N) denote the digit sum of the integer N. As N ranges over all 3-digit positive numbers, what value of N would give the minimum of M=NS(N)?
Monday, June 17, 2013 at 2:59pm

math
Find the sum of the squares of the three solutions of the equation x^3+3x^2−7x+1=0.
Monday, June 17, 2013 at 2:58pm

math
Consider the function defined as f(x)=(x^2+2x+3)^2+4. As x ranges over all real values, what is the minimum value of f(x)?
Monday, June 17, 2013 at 2:57pm

math
ABCD is a square. Γ1 is a circle that circumscribes ABCD (i.e. Γ1 passes through points A,B,C and D). Γ2 is a circle that is inscribed in ABCD (i.e. Γ2 is tangential to sides AB,BC,CD and DA). If the area of Γ1 is 100, what is the area of Γ2?
Monday, June 17, 2013 at 2:56pm

math
In an urn, there are several colored balls, with equal numbers of each color. We add 14 balls which are all of the same new color, that is different from those in the urn. It is calculated that the probability of drawing , without replacement, two balls of the same color is ...
Monday, June 17, 2013 at 2:55pm

math
Let S={1,2,3,4,…,2013} and let n be the smallest positive integer such that the product of any n distinct elements in S is divisible by 2013. What are the last 3 digits of n?
Monday, June 17, 2013 at 2:55pm

math
Find the minimum possible value of 2cos4θ+8cos3θ+32cos2θ+56c​osθ+100
Monday, June 17, 2013 at 2:54pm

math
If ABC is a triangle with AB=20,BC=22 and CA=24. Let D lie on BC such that AD is the angle bisector of ∠BAC. What is AD^2?
Monday, June 17, 2013 at 2:53pm

math
ABCD is a square. Γ1 is a circle that circumscribes ABCD (i.e. Γ1 passes through points A,B,C and D). Γ2 is a circle that is inscribed in ABCD (i.e. Γ2 is tangential to sides AB,BC,CD and DA). If the area of Γ1 is 100, what is the area of Γ2?
Monday, June 17, 2013 at 2:52pm

math
Suppose A,B,C,D, and E are distinct positive integers such that A<B<C<D<E, their median is 10 and their mean is 15. Find the maximum possible value of D.
Monday, June 17, 2013 at 2:52pm

math
Suppose A,B,C,D and E are distinct positive integers such that A < B < C < D < E,their median is 10 and their mean is 15.Find the maximum possible value of D.
Monday, June 17, 2013 at 2:49pm

Math
The distance between the front wheels of a model car is 4.5 centimeters. What is the actual distance of the car if the scales is 1:24
Monday, June 17, 2013 at 2:44pm

math
A mason's assistant's rate of pay is \$0.75 per cubic foot of earth moved. He moves 220 cubic feet of earth to dig a trench. What is his pay for this job? THE ANSWER IS NOT &330
Monday, June 17, 2013 at 2:36pm

math
Two teams play an extended series of 100 volleyball games. Team A wins the first game and then team B wins the second. The probability that a team wins each subsequent game is equal to the proportion of games that team has won so far. The probability that one of the teams wins...
Monday, June 17, 2013 at 2:14pm

math
. A radio station had 245 tickets to a concert. They gave away 4 times as many tickets to listeners as to employees. How many tickets did they give away to employees?
Monday, June 17, 2013 at 1:59pm

math
One white marble, two blue marbles, and three red marbles were in a bag. One marble was drawn from the bag and then put back. then another marble was drawn. What is the probability that a white marble was drawn both times? Is the answer 1/36? 1/6 * 1/6
Monday, June 17, 2013 at 1:23pm

math
The physical education teacher marked off a triangular section of the gym to play a game. Two of the triangle's sides were 7 feet and 9 feet respectively. If the perimeter of the triangle is 22 feet, what is the measure of the triangle's third side?
Monday, June 17, 2013 at 12:33pm

Math
PLEASE HELP !!! A mason is putting in the foundation for a wall. His assistant digs a trench in roughly the shape of a rectangular solid measuring 50 ft. in length, 12 inches deep along both sides, and 12 inches wide at the top and bottom. How many cubic feet of earth did he ...
Monday, June 17, 2013 at 12:28pm

Math
A hot water heater measures 20" in diameter. What is the area of a metal base for the water heater, assuming a two-inch overhang for the base beyond the edge of the heater?
Monday, June 17, 2013 at 12:27pm

Math
If 600 bricks measuring 12" by 18" are required to build a wall 10 ft. high (one brick thick), how long is the wall?
Monday, June 17, 2013 at 12:27pm

math
. You are the accountant for Suite Dreams, a retail furniture store. Recently, an order of sofas and chairs was received from the manufacturer with terms of 3/15, n/45. The order amounted to \$230,000, and Suite Dreams can borrow money at 13% ordinary interest. How much can be ...
Monday, June 17, 2013 at 11:41am

math
Varsity Press, a publisher of college textbooks, received a \$70,000 promissory note at 12% ordinary interest for 60 days from one of its customers, Reader’s Choice Bookstores. After 20 days, Varsity Press discounted the note at the Grove Isle Bank at a discount rate of 14...
Monday, June 17, 2013 at 11:41am

math
Alicia Eastman deposited \$2,000 in a savings account at the Biltmore Bank paying 6% ordinary interest. How many years will it take for her investment to amount to \$2,600?
Monday, June 17, 2013 at 11:40am

math
On May 23, Samantha Best borrowed \$40,000 from the Tri City Credit Union at 13% for 160 days. The credit union uses the exact interest method. What was the amount of interest on the loan?
Monday, June 17, 2013 at 11:40am

Math check
A random sample of size 26 is to be selected from a population that has a mean ì = 46 and a standard deviation ó of 15. (a) This sample of 26 has a mean value of x, which belongs to a sampling distribution. Find the shape of this sampling distribution. skewed ...
Monday, June 17, 2013 at 11:02am

math check
Consider a normal population with ì = 49 and ó = 6. Calculate the z-score for an x of 44.2 from a sample of size 22. (Give your answer correct to two decimal places.) 3.75 is what I got.. and I have only one more try on this one.
Monday, June 17, 2013 at 10:57am

math
could you please do the steps with the answer so that I can understand it. write as a decimal round to the nearest thousandth if necessary. 4/5% 20 1/4% thanks for your time and help
Monday, June 17, 2013 at 9:21am

math
could you please do the steps with the answer so that I can understand it. write as a decimal round to the nearest thousandth if necessary. 4/5% 20 1/4% thanks for your time and help
Monday, June 17, 2013 at 9:21am

Math
A homeowner empties her hot water heater every 36 days and changes the filter in the heat pump every 48 days. She did both on Friday September 17, 2012. When again will she do both on the same day? (give the day of the week, the date, month, and year)
Monday, June 17, 2013 at 7:43am

math
The angle of elevation of the top of a towerfrom a point 42meters away frm its base on level ground is 36degrees.find the height of the tower?
Monday, June 17, 2013 at 5:44am

math
1.Mark makes Php 40.00 per hour if he works 40 hours or less.If works overtime,he makes an additional Php 5.00 per hour as overtime pay.What would be his total pay if he worked 58 hours? 2.The world's greatest known ocean depth of 36,201 feet was recorded in the Marianas ...
Monday, June 17, 2013 at 5:16am

math
What is the molarity of a 15%w/v HCl solution (GMW=36.46)?
Monday, June 17, 2013 at 2:26am

math help
Consider the approximately normal population of heights of male college students with mean ì = 69 inches and standard deviation of ó = 4.6 inches. A random sample of 25 heights is obtained (e) Find P(x > 70). (Give your answer correct to four decimal places...
Sunday, June 16, 2013 at 10:25pm

math help
A random sample of size 26 is to be selected from a population that has a mean ì = 46 and a standard deviation ó of 15. (f) What is the probability that the sample mean will be within 6 units of the mean? (Give your answer correct to four decimal places.)
Sunday, June 16, 2013 at 10:22pm

math check and help
A certain population has a mean of 472 and a standard deviation of 40. Many samples of size 46 are randomly selected and the means calculated. (a) What value would you expect to find for the mean of all these sample means? (Give your answer correct to nearest whole number.) ...
Sunday, June 16, 2013 at 9:53pm

math
a rectangular table top measures 7/9 of a meter long by 1/8 of a meter wide. What is the area?
Sunday, June 16, 2013 at 8:17pm

Math
Calculate the present value for \$1400 needed in 4 years, invested at 4.2% per year compounded semi-anually
Sunday, June 16, 2013 at 8:14pm

Math
Calculate the present value for \$1400 needed in 4 years, invested at 4.2% per year compounded semi-anually
Sunday, June 16, 2013 at 8:14pm

math
How much interest will be gained on a \$3700 investment invested at 5.6% per year, compounded monthly for 3 years?
Sunday, June 16, 2013 at 8:12pm

Finite Math
Two balls are drawn from a bag with 4 black balls and 2 white balls. Find th probability distribution got drawing 2 black balls.
Sunday, June 16, 2013 at 8:01pm

Math
Solve for the interest acured on a 520 investment after 4 years that has an interest rate of 4.9% per year, simple interest.
Sunday, June 16, 2013 at 7:49pm

math
how to draw a right triangle with one acute angle measuring 75 degrees and a leg of 5cm on a side of the 75 degree angle
Sunday, June 16, 2013 at 7:36pm

Math Help
I have no ideal how to work this. I need help please. A sample of 30 of 178 funded projects revealed that 12 were valued at \$17,360 each and 18 were valued at \$20,280 each. From the sample data, estimate the total value of the funding for all the projects. (Enter your answers ...
Sunday, June 16, 2013 at 7:34pm

math
Alicia Eastman deposited \$2,000 in a savings account at the Biltmore Bank paying 6% ordinary interest. How many years will it take for her investment to amount to \$2,600?
Sunday, June 16, 2013 at 5:00pm

Math
Set up the problem and then multiply. Write zeros as needed. 419.2 x 2.54 . What would the answer be?
Sunday, June 16, 2013 at 4:59pm

Math
Sandra scored 60 on a test. The test scores were normally distributed, with a mean of 50 and a standard deviation of 10? What would Sandra's score be?
Sunday, June 16, 2013 at 4:28pm

Math help
Could someone work one of these out so I can use as example. A sample of 59 night-school students' ages is obtained in order to estimate the mean age of night-school students. x = 25 years. The population variance is 20. (a) Give a point estimate for ì. (Give your ...
Sunday, June 16, 2013 at 12:36pm

math help
Do you drink the recommended amount of water each day? Most Americans don't! On average, Americans drink 5.9 eight-oz servings of water a day. A sample of 50 education professionals was randomly selected and their water consumption for a 24-hour period was monitored; the ...
Sunday, June 16, 2013 at 12:32pm

math help
Two hundred fish caught in Cayuga Lake had a mean length of 14.1 inches. The population standard deviation is 2.9 inches. (Give your answer correct to two decimal places.) (a) Find the 90% confidence interval for the population mean length. Lower Limit Upper Limit (b) Find the...
Sunday, June 16, 2013 at 12:29pm

math
Triangle ABC is an equilateral triangle with side length AB=22. Place a point D on the line segment BC. Extend BC to the point E such that BD=CE. point E is defined as lying on BD and satisfying BD=CE.What is the value of DE?
Sunday, June 16, 2013 at 5:57am

math
if the width of a rectangle is 5 inches shorter than the length and the perimeter of the rectangle is 80 inches. how do you set up the equation for the perimeter involving only L and how do you solve this in a linear equation algebraically to find the length and the width
Sunday, June 16, 2013 at 3:17am

math
find the number of 8 units to the right of -3
Saturday, June 15, 2013 at 11:42pm

math check and help
A random sample of the amount paid (in dollars) for taxi fare from downtown to the airport was obtained. (Give your answers correct to two decimal places.) 16 17 22 13 21 23 22 18 13 22 19 20 19 22 16 (a) Use the data to find a point estimate for the mean. \$ 18.87 . (b) Use ...
Saturday, June 15, 2013 at 11:37pm

math
how do you solve this can you do this with the steps do I an understand them,please. 3 outside the square root like a cube. (square root start) 64x^6/27 (square root end)
Saturday, June 15, 2013 at 11:15pm

math
how do you solve this can you do this with the steps do I an understand them,please. (square root start) 4x-8 (square root end)=-8
Saturday, June 15, 2013 at 11:12pm

math
how do you solve this can you do this with the steps do I an understand them,please. square root start 5x-4 square root end = 7- square root start 13-x square root end thanks for your time and help
Saturday, June 15, 2013 at 11:10pm

math
how do you solve this can you do this with the steps do I an understand them,please. (x-9)^2=81
Saturday, June 15, 2013 at 11:09pm

Math check
Consider the following. (Give your answers correct to two decimal places.) (a) Determine the value of the confidence coefficient z(á/2) for 1 - á = 0.87. Incorrect: Your answer is incorrect. . 0.44
Saturday, June 15, 2013 at 11:08pm

Math
Find the sum to 5 terms of the geometric progression whose first term is 54 and fourth term is 2.
Saturday, June 15, 2013 at 10:32pm

math
how do you convert miles to feet in the u.s.customary system? a.multiply by 12 b.divide by 12 c.multiply by 5,280 d.divide by 5,280
Saturday, June 15, 2013 at 8:55pm

Math check
The middle 69% of a normally distributed population lies between what two standard scores? (Give your answers correct to two decimal places.)0.31 and 1.69 was my answers and they are wrong????. .
Saturday, June 15, 2013 at 4:52pm

Math Help and check
The weights of ripe watermelons grown at Mr. Smith's farm are normally distributed with a standard deviation of 2 lb. Find the mean weight of Mr. Smith's ripe watermelons if only 5% weigh less than 18 lb. (Give your answer correct to one decimal place.) Incorrect: Your...
Saturday, June 15, 2013 at 4:50pm

Math For Educators
A homeowner empties her hot water heater every 36 days and changes the filter in the heat pump every 48 days. She did both on Friday September 17th, 2012. When will she do both on the same day? ( give the day of the week, date, month and year. also the date is made up and not ...
Saturday, June 15, 2013 at 4:25pm

math
Tell whether each of the following is true for all sets A, B, or C. If false, give a counterexample.? a. A-B=A- ∅ b. (A ¾B) ̅=(A ) ̅¾B ̅ c. A ¿(B¾C)=(A​;¿B)¾C d. (A-B)...
Saturday, June 15, 2013 at 2:38pm

math
You are the accountant for Suite Dreams, a retail furniture store. Recently, an order of sofas and chairs was received from the manufacturer with terms of 3/15, n/45. The order amounted to \$230,000, and Suite Dreams can borrow money at 13% ordinary interest. How much can be ...
Saturday, June 15, 2013 at 2:07pm

math
Varsity Press, a publisher of college textbooks, received a \$70,000 promissory note at 12% ordinary interest for 60 days from one of its customers, Reader’s Choice Bookstores. After 20 days, Varsity Press discounted the note at the Grove Isle Bank at a discount rate of 14...
Saturday, June 15, 2013 at 2:06pm

math
Alicia Eastman deposited \$2,000 in a savings account at the Biltmore Bank paying 6% ordinary interest. How many years will it take for her investment to amount to \$2,600?
Saturday, June 15, 2013 at 2:06pm

math
On May 23, Samantha Best borrowed \$40,000 from the Tri City Credit Union at 13% for 160 days. The credit union uses the exact interest method. What was the amount of interest on the loan?
Saturday, June 15, 2013 at 2:05pm

math
What is the maturity value of the following loan? Use MV = P(1 + RT) to find the maturity. Principal=\$120,740, Rate=11¾ and Time= 7 months
Saturday, June 15, 2013 at 2:04pm

math
A textbook search committee is considering 11 books for possible adoption. The committee has decided to select 3 of the 11 for future consideration. In how many ways can it do so?
Saturday, June 15, 2013 at 1:46pm

Math
Consider a right circular cylinder whose total surface area (top, bottom, side) is 300 pi; what must its radius be in order that the volume be as large as possible
Saturday, June 15, 2013 at 1:16pm

math trigonometry
if 5sin theta + 12cos theta is equal to 13 find the value of tan theta
Saturday, June 15, 2013 at 10:48am

math
the ones digit and the billions digit are twiced the difference of 7 and 5
Saturday, June 15, 2013 at 9:50am

math
the sum of the three digits in the billions period is 4
Saturday, June 15, 2013 at 9:49am

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