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Question 971859: The ages of employees at a particular company have a mean of 39. The distribution of sample means for samples of size 200 is normal with a mean of 39 and a standard deviation of 0.79. Suppose you take a sample of size 200 employees from the company and find that their mean age is 41.3. How many standard deviations is the sample mean above the mean of the sampling distribution?
the answer is 2.9 please show work
Click here to see answer by stanbon(75887)

Question 971992: What is the principal:
Rate at 12%
Time is 2 months
Simple interest is $960
Click here to see answer by Theo(13342)

Question 971991: IUB corp projected a year-end net income of $80,000. Net income represented 15% of project annual sales. what are IUB's projected annual sales> (round to nearest dollar)
Click here to see answer by rfer(16322)

Question 972161: What is the markup on a jet ski that sells for $6,040.00 but costs $5,199.50?

Click here to see answer by Alan3354(69443)

Question 972229: $800 is invested for 5 years at an annual simple interest rate of 14%
how much interest will be earned?
what is the future value of the investment at the end of the 5 year?
Click here to see answer by amarjeeth123(569)

Question 972345: Investing. Do Xuan Nam is going to invest $1000 at a simple interest rate of 4%. How long will it take for the investment to be worth %1040?
Click here to see answer by stanbon(75887)

Question 972304: a regtangular auditorium seats 1050 people. the number of seats in each row exceeds the number of rows by 17. find the number of seats in each row
Click here to see answer by ankor@dixie-net.com(22740)

Question 972613: You invest $3,200 in an account that pays an interest rate of 7.25%, compounded continously.
Calculate the balance of your account after 12 years. Round your answer to the nearest hundredth.
Click here to see answer by Boreal(15235)

Question 972725: (x+29)^(2/3)=49
Click here to see answer by stanbon(75887)

Question 972779: Find (if possible) the supplement of the following angle.
π / 10
Click here to see answer by lwsshak3(11628)

Question 972777: Solve the equation and check your solution.8x + 3(x - 2) = 11x + 7
Click here to see answer by lwsshak3(11628)

Question 972768: 1/4 division sign 2/5 + 1/6
Click here to see answer by josgarithmetic(39617)

Question 972754: if a right triangle ,if one acute angled is half the other ,then find the smallest angle
Click here to see answer by Theo(13342)

Question 972778: Solve the equation by extracting square roots.
x2 = 11
Click here to see answer by Alan3354(69443)

Question 972839: if x= root7/ 5 and 5/x = p root7 , then find the value of p
Click here to see answer by Boreal(15235)

Question 972835: February is s sale month at the clothing store all items are marked down 20% if the sale price for a purse is $42 what was the price befor the markdown
Click here to see answer by solver91311(24713)

Question 972833: The merchant has a standard 60% markup on her inventory she pays $20 a pair for dress shoes for how much does she sell the dress shoes
Click here to see answer by Boreal(15235)

Question 972866: You invest $1,600 in an account that pays an interest rate of 6.5%, compounded continuously. Calculate the balance of your account after 6 years. Round your answer to the nearest hundredth. *PLEASE ROUND TO THE NEAREST HUNDREDTH.
Click here to see answer by solver91311(24713)

Question 972863: George wants to save money for a car. George invest $1,100 in an account that pays an interest rate of 4%. How many years will it take for the account to reach $3,900? Round your answer to the nearest hundredth.
Click here to see answer by solver91311(24713)

Question 972892: Start with x = 100 and add four x values to make a sample of five data such that the standard deviation of these data equals 0.
I do not understand this

Click here to see answer by solver91311(24713)

Question 972770: A bicyclist started on his trip from city A to city B. In 1 hour and 36 minutes, a biker also left A and headed towards B, and he arrived there at the same time as the bicyclist. Find the speed of the bicyclist if it is less than the speed of the biker by 32 km/hour, and the distance between the two cities is 52 km.
Click here to see answer by ankor@dixie-net.com(22740)

Question 972771: Two automobiles leave the same city simultaneously and both head towards another city. The speed of one is 10 km/hour greater than the speed of the other, and this is why the first automobile arrives at the destination 1 hour before the other. Find the speed of both automobiles knowing that the distance between the two cities is 560 km.
Click here to see answer by lwsshak3(11628)

Question 972769:
The numerator of a fraction (which is in its simplest form) is 5 less than the denominator. If the numerator is multiplied by 2, and the denominator is increased by 16, then the fraction becomes smaller by 1
3
of it. Find the original fraction.
Click here to see answer by Theo(13342)

Question 972970: Blogging. A business owner's blog can be an effective marketing and advertising tool. The return on investment r of a blog can be estimated by
r = tmap
____
hs,
t is the average number of visits to the blog each day. m is the percentage of blog visitors who purchase merchandise. a is the average order size. p is the percentage of the average order that is profit. h is the number of hours spent blogging each day. and s is the hourly salary of the blogger. A return on investment less than 1 indicates that the blog is costing the company money.
Tomas earns $30 per hour writing a blog for his company. It takes him 4 hrs per day to write the blog, and 5% of the blog visitors buy merchandise, with an average order size of $100 and a profit percentage of 15%. He calculates the return on investment to be 3.2. What is his average daily blog traffic?

Click here to see answer by macston(5194)

Question 973258: express each set in set builder notation
F= {15,16,17,...,100}
Click here to see answer by Edwin McCravy(20055)

Question 973025: If the selling price x is related to profit p by the equation p=5000x−125x^2
i)For what range of values of x is the profit increasing?
ii)For what range of values of x is the profit decreasing?
iii)Determine the value of x that would yield maximum profit.
iv)Determine the maximum profit.
Click here to see answer by Edwin McCravy(20055)

Question 973267: Determine the following

B U C

The U is a math symbol
Click here to see answer by Alan3354(69443)

Question 973361: two side of a triangle are 6 and 8 Cm. If height of the triangle corresponding to 6 cm. side is 4 cm. find area and height of the triangle corresponding to 8 cm.side
Click here to see answer by josgarithmetic(39617)

Question 973511: b={6,8}
determine n(B)
Click here to see answer by MathLover1(20849)

Question 973615: How do you get the answer 3(x+2y) when the expression is 3x+6y: use the distributive property This is pre-algebra
Click here to see answer by MathLover1(20849)

Question 973963: Two irrational number between under root 2 and 3
Click here to see answer by Alan3354(69443)

Question 973947: If man=$5,woman=$1,child=0.01,how many men, women, children to = $500 & 500 people
Click here to see answer by JulietG(1812)

Question 974019: Sketch the graph of the function:
f(x)= {x^2+1 x>0
{x+1 x<0
Click here to see answer by Boreal(15235)

Question 974017: Find the equation of the straight line which is parallel to the line whose equation is 3x+4y = 0, and which passes through the point of intersection of the lines x-2y = a an x+3y = 2a. Express the answer in Ax+By = C. Please show steps as well.
Click here to see answer by josgarithmetic(39617)

Question 974016: Find the equation of the circle whose center lies on the line y=3x-7 and which passes through the points (1,1) and (2,-1). Express the answer in x^2+y^2+Ax+By+C=0. Please show steps as well. These problems bug me.
Click here to see answer by josgarithmetic(39617)

Question 974074: If 15c3r = 15cr+3, then r =

1. 2
2. 3
3. 4
4. 5

Click here to see answer by farohw(175)

Question 974206: how can i convert RPM into meter/min

Click here to see answer by Edwin McCravy(20055)

Question 974165: For a parade a teacher arranged all the pupils of his class in rows of 12 and then in rows of 16. He noticed that each time 3 pupils were left out. Calculate the number of pupils in the class
Click here to see answer by KMST(5328)

Question 974163: In a group of 40 people the ration of men to women is 3:1. How many women must join the group so that the ratio of men to women becomes 5:4?
Click here to see answer by MathTherapy(10552)

Question 974290: Please explain in detail the previous question as the previous tutor replied only with the answer. Thanks much
In a group of 40 people the ration of men to women is 3:1. How many women must join the group so that the ratio of men to women becomes 5:4?
Click here to see answer by josgarithmetic(39617)

Question 974421: 2=5
4=18
6=39
12=??
Click here to see answer by Boreal(15235)

Question 974532: Two men start from two places 50 km apart.when they travel in opposite directions,they meet in two hours.when they travel in the same direction,one overtakes the other in five hours.Determine their respective rates of traveling
Click here to see answer by lwsshak3(11628)

Question 974627: Please help me find the value of 32 1/2
Click here to see answer by Alan3354(69443)

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