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Question 1124880: There's a faulty vending machine which, when you buy an item, has a two in three chance of giving you two of that item when you only pay for one. Annette buys a bag of chips from that machine every morning.

In the upcoming work week (Monday through Friday), what's the probability that Annette will get a 'bonus' bag of chips on Monday and Friday but not on the other days?

In the upcoming work week (Monday through Friday), what's the probability that Annette will get a 'bonus' bag of chips on any two (and only two) of the days?

Enter your answers as whole numbers or fractions in lowest terms.
Click here to see answer by Theo(13342)

Question 1124832: The cost C(x) for manufacturing x units of a product is given by the formula C(x) = x2 - 70x + 4400. Find the number of units manufactured at a cost of $7400.

A. 100 units
B. 110 units
C. 40 units
D. 30 units
Click here to see answer by Boreal(15235)

Question 1124849: The cost C(x) for manufacturing x units of a product is given by the formula C(x) = x2 - 70x + 4400. Find the number of units manufactured at a cost of $7400.

A. 100 units
B. 110 units
C. 40 units
D. 30 units
Click here to see answer by josmiceli(19441)

Question 1124984: you plans to deposit $400 at the end of each year for 2 years, $200 at the end of next year, $300 at the end of next 3 years, and $100 at the end of each year for last 2 years. How much will you have over tge entire period if your savings account awards 4% per year
Click here to see answer by Theo(13342)

Question 1124998: the equations of two circles are x^2 + y^2 - 2x + 4y - 20 = 0 and x^2 + y^2 + 4x - 6y = 0
(a) find the distance between the centres of these circles
(b) find the radii of the two circles
(c) determine relationship between the two circle
Click here to see answer by rothauserc(4718)

Question 1125025: Every day, Quinn either gains two pounds (with probability 1/2) or loses one pound (with probability 1/2). Each day these probabilities are independent of whether she lost or gained weight any other day.

At the end of four days, what's the probability that Quinn will weigh one pound less than she did before?

At the end of four days, what's the probability that Quinn will weigh one pound more than she did before?

Enter your answers as whole numbers or fractions in lowest terms.
Click here to see answer by greenestamps(13200)

Question 1124879: A Bernoulli Trials experiment consists of 3 trials, with a 35 probability of success on each trial.

What is the probability of at least 1 success and at least 1 failure?

What is the probability of 2 successes, given at least 1 success?

What is the probability of at least 2 successes, given at least 1 failure?

Enter your answers as whole numbers or fractions in lowest terms.

Click here to see answer by Boreal(15235)

Question 1124982: The loudness of sound is measured in units called decibels. The decibel rating of a sound is given by
D(i) = 10.log(i/i0)
Where i is the intensity of the sound and i0 is the minimum intensity detectable by the human ear (the so-called threshold sound). Find the decibel rating, round answers to the nearest whole number.
Whisper, 115i0
Click here to see answer by ankor@dixie-net.com(22740)

Question 1125107: Find the total value An when a principle P is invested at 12% p.a. simple interest for n years. Hence find the smallest number of years required for the investment to double.
Click here to see answer by Theo(13342)

Question 1125278: Sophia owns a cheese factory. The amount of cheese, in kilograms, that she sells in one week, Q, is given by
Q = 882 - 45p, where p is the price of a kilogram of cheese in euros (EUR).
Sophia earns (p - 6.80) euros of profit for each kilogram of cheese sold.
-What price should Sophia set for her cheese so that she earns a maximum profit?
-What is her maximum profit?
Click here to see answer by josmiceli(19441)

Question 1125217: A bag contains three 20-dollar bills, three 10-dollar bills, and three 5-dollar bills. Three bills are selected from the bag at random. Let the random variable X represent the total dollar value of the selected bills.

What is the least possible value of X?

What is the greatest possible value of X?

What is Pr(X=30)?

Enter your answers as whole numbers or fractions in lowest terms. Your answers should all be numeric -- do not use dollar signs in your answers.
Click here to see answer by math_helper(2461)

Question 1125361: Which of the following is the number of non-perfect square number between 172 and 182?
(i) 613 (ii) 35 (iii) 34 (iv) 70
Click here to see answer by greenestamps(13200)

Question 1125364: Looking for help with the following radical, which needs to be simplified. The book does NO help in explaining how to go about it.
^3sqrt -27y^18/81x^6
After scouring the internet I used quotient rules and broke it down as follows:
^3sqrt-27y^18 / ^3sqrt81x^6
This gave me a result of:
3y^6/3sqrt3^4x^2
Am I on the right track? Thank you!
Click here to see answer by josgarithmetic(39617)

Question 1125371: After a careful demographic analysis, a university forecasts that student enrollments will drop by 3% per year for the the next 12 years. If the university currently has 14000 students, how many students will it have 12 years from now?
Click here to see answer by solver91311(24713)

Question 1125214: A bag contains two red balls, one green ball, and six yellow balls. Balls are drawn from the bag one at a time at random without replacement until a yellow ball has been drawn.

Let random variable R represent the number of red balls drawn. Complete the probability distribution function for R in the table below, putting the values of R in ascending order.

Click here to see answer by math_helper(2461)

Question 1125403: a jar is filled with candy. jeremy eats one third of the candies and sandra eats three quarters of the remainder, leaving 54 candies in the jar. the numbers of candies in the jar originally was:
A) 648
B) 324
C) 243
D) 216
E) 108
Click here to see answer by josgarithmetic(39617)

Question 1125428: You wish to invest $1600 over one year in two accounts paying 5% and 6% annually. How much should you invest in each to earn $89?
Click here to see answer by josgarithmetic(39617)

Question 1125428: You wish to invest $1600 over one year in two accounts paying 5% and 6% annually. How much should you invest in each to earn $89?
Click here to see answer by ikleyn(52781)

Question 1125586: Find all whole values for y for which the double inequality is true:
1. 5 < y < 2
2. 28 < y < 31.2
Click here to see answer by Edwin McCravy(20055)

Question 1125579: If E and F are two disjoint events in S with P(E) = 0.6 and P(F) = 0.1, find P(E ∪ F), P(EC), P(E ∩ F), P((E ∪ F)C), and P((E ∩ F)C).

P(E ∪ F) =
P(EC) =
P(E ∩ F) =
P((E ∪ F)C) =
P((E ∩ F)C) =
Click here to see answer by ikleyn(52781)

Question 1125620: Graph the following lines and write the equation in slope-intercept form. (Don't have to graph it)
a) Through the points (4,2) and (3,1)
b) Through the points (5,6) and (−1,4).
c) Through the points (5,6) and (−1,4).
d) Through the point (2,7.5) with an x intercept of −1.
e) With y intercept of −3 and an x intercept of −4.5.
TYSM IF YOU HELP BECAUSE OUR TEACHER DIDN'T TEACH THIS :((
Click here to see answer by josgarithmetic(39617)

Question 1125635: Tina's mother is 3 times as old as Tina and four times as old as tina's sister Meena, Meena is 3 years younger than Tina how old are Tina Mina and their mother.
Click here to see answer by josgarithmetic(39617)

Question 1125692: Determine the best interest rate for a new car purchase for a 48-month loan at a bank near you. If you finance a $25,999 with such a loan, determine the payment and the total interest paid over the course of the loan. Also, determine the best interest rate for a new car purchase for a 48-month loan at a credit union near year. Determine the monthly payment and the total interest paid if the same auto loan in financed through the credit union. Please show work on how you obtain the answers. Is it true that the credit union would save you money?
Click here to see answer by ikleyn(52781)

Question 1125699: Ellen's first three test scores were consecutive odd integers. Her fourth score was 83. She had an average between 80 and 82 inclusive for the four tests. What was her lowest test score?
Click here to see answer by josmiceli(19441)

Question 1125715: Don Chather bought a new Dell computer for $1,995. This included a 6% sales tax. What is the amount of sales tax and the selling price before the tax?
Click here to see answer by math_helper(2461)

Question 1125714: Graph the following lines and write the equation in slope-intercept form.
a) Through the point (2,7.5) with an x intercept of −1.
b) With y intercept of −3 and an x intercept of −4.5.
Thank you so much if you help because I don't know how to do either of these...
Click here to see answer by josgarithmetic(39617)

Question 1125755: A camping troupe of scouts have enough food for 12 days. If the daily ration is increased in the ratio 3:2,for how many days will the food last?

Click here to see answer by ikleyn(52781)

Question 1125866: If a:b=4:5 and b:c=7:8, find a:b:c
Click here to see answer by Alan3354(69443)

Question 1125866: If a:b=4:5 and b:c=7:8, find a:b:c
Click here to see answer by josmiceli(19441)

Question 1125871: Assume that adults have IQ scores that are normally distributed with a mean of 96.5 and a standard deviation 15.4. Find the first quartile Upper Q 1, which is the IQ score separating the bottom 25% from the top 75%.
Click here to see answer by Boreal(15235)

Question 1125872: Assume that 32.9% of people have sleepwalked. Assume that in a random sample of 1521 adults, 542 have sleepwalked.
a. Assuming that the rate of 32.9% is correct, find the probability that 542 or more of the 1521 adults have sleepwalked.
b. Is that result of 542 or more significantly high?
c. What does the result suggest about the rate of 32.9%?
Click here to see answer by Boreal(15235)

Question 1125913: The waiting times between a subway departure schedule and the arrival of a passenger are uniformly distributed between 0 and 9 minutes. Find the probability that a randomly selected passenger has a waiting time greater than 1.25 minutes.
Click here to see answer by ikleyn(52781)

Question 1125920: Consider a square whose size varies. Let s represent the side length of the square in (cm) and let P represent the perimeter of the square (in cm).
a.) wrote a formula that expresses P in terms of s.
B) consider the equation 18=4s
Solve for s
C)write a formula that expresses s in terms of p
D) evaluate your formula that expresses from part (c) for p=18
Click here to see answer by josmiceli(19441)

Question 1125934: A 16 inch candle is lit and burns at a constant rate of 1.1 inches per hour. Let t represent the never of hours that have elapsed since the candle was lit.
A) write an expression in terms of t that represents the number of incrhs that have burned from the candle since it was lit.
B) write an expression in terms of t that represents the remaining length of the candle (in inches).
Click here to see answer by ankor@dixie-net.com(22740)

Question 1125942: The park ranger office at Yellowstone National Park issued 32 backcountry passes to female hikers and 58 backcountry passes to male hikers. What ratio compares the number of backcountry passes issued to female hikers to the total number of backcountry passes issued?
Click here to see answer by Boreal(15235)

Question 1125933: Ian and Carolyn are 200 feet apart when they begin walking directly toward one another. Ian travels at a constant speed of 2.5 feet per second and Carolyn travels at a constant speed of 4.5 feet per second.
Let t represent the number of seconds that have elapsed since Ian and Carolyn started walking toward one another.
A) write an expression in terms of t that represent the number of feet Ian has traveled since he started walking toward Carolyn.
B) write an expression in terms of t that represents the number of feet Carolyn has traveled since she started walking toward ian.
C)write an expression in terms of t that represents the distance between Ian and Carolyn.
D) how many seconds after the two started walking will they reach each other ?
Click here to see answer by ankor@dixie-net.com(22740)

Question 1125977: A bathtub contains 45 gallons of water and the total weight of the tub and water is approximately 767.525 pounds. You pull the plug and the water begins to drain.
Let v represent the number of gallons of water that has drained from the tub since the plug was pulled. Note that water weights 8.345 pounds per gallon.
A) write an expression in terms of v that represents the weight of the water that has drained from the tub (in pounds).
B) write an expression in terms of v that represents the total weight of the tub and water (in pounds).
C) how much does the tub weigh when there in no water in it?
D) if the weight of the tub and water is 617.315 pounds, how many gallons of water are in the tub?
Click here to see answer by josgarithmetic(39617)

Question 1125987: Write the point-slope form of the line that passes through (-8, 2) and is parallel to a line with a slope of -8. Include all of your work in your final answer.
What is the answer?

Click here to see answer by Boreal(15235)

Question 1126030: Let f (x) = x2 + 8x + 22.
Find the vertex. Answer: ________
State the range of the function. Answer: ________
On what interval is the function increasing? Answer: ________
Click here to see answer by MathLover1(20849)

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