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A survey study is to be made to estimate the proportion of residents of a certain suburb who favor the construction of a public park near the suburb. The survey will ask at least 30 residents about their opinion regarding the construction. How large a sample is needed if one wishes to be at least 95% confident that the estimate is within 0.04 of the true proportion of residents favoring the construction of the public park?
General
4 months ago
Consider two consecutive positive integers such that the square of the second integer added to 3 times the first is equal to 85
General
4 months ago
Solve the system : x = 2 - y and 3x + 3y = 6a) ( 4, -2 )b) ( 1, 1 )c) Parallel linesd) Coincident lines
General
4 months ago
GETS BRAINILIST!!!!!!What is the length of the line segment PQ on the coordinate grid? A fourquadrant coordinate grid from negative 50 to positive 50 in increments of 10 is drawn. Point P is plotted on the ordered pair negative 20, 10. Point Q is plotted on the ordered pair 10, 10. The points are connected by a line. 20 units 30 units 40 units 50 units
General
4 months ago
Tammy makes $ 7 per hour plus $4 for each item she sells, and lisa makes $10 per hour plus 3.00 for each item she sells. in an hour , how many items do they need to sell to make the same amount of money?show steps
General
4 months ago
Jon is looking into a $4,250 vacation package that is offered for 25% off. There is a 9% resort fee added on to the total. How much will the vacation cost Jon.
General
4 months ago
Your family goes to a restaurant for dinner. There are 7 people in your family. Some order the chiken dinner for $ 12 dollars and some order the steak dinner for $ 17 dollars. If the bill was $ 109 dollars, how many people ordered each dinner?
General
4 months ago
Pumps A, B and C operate at their respective constant rates. Pumps A and B, simultaneously, can fill a certain tank in 6/5 hours. Pump A and C, operating simultaneously, can fill the tank in 3/2 hours; abd pumps B and C, operating simultaneously, can fill the tank in 2 hours. How many hours does it take pumps A, B, and C, operating simultaneously, to fill the tank?(A) 1/3(B) 1/2(C) 2/3(D) 5/6(E) 1
General
4 months ago
If a time series plot exhibits a horizontal pattern, then a. the data fluctuates around the variable mean. b. it is evident that the time series is stationary. c. there is still not enough evidence to conclude that the time series is stationary. d. there is no relationship between time and the time ser
General
4 months ago
A random sample of 49 measurements from one population had a sample mean of 15, with sample standard deviation 5. An independent random sample of 64 measurements from a second population had a sample mean of 18, with sample standard deviation 6. Test the claim that the population means are different. Use level of significance 0.01
General
4 months ago
tickets to a science exposition cost $5.75 each for students and $7.00 for adults. How many students and adults went if the ticket charge was $42.75?
General
4 months ago
A plane intersects a hexagonal prism. the plane is perpendicular to the base of prism. which two dimensional figure is the cross section of the plane intersecting the prism
General
4 months ago
John has saved $20,000 and he wants to buy a $100,000 house. If he pays just $10,000 as a down payment, he will have a $90,000 mortgage with a monthly payment of $500. If he pays all of his savings ($20,000) as a down payment, he will only have an $80,000 mortgage and a lower interest rate resulting in a $420 monthly payment. He should choose to pay _____.
General
4 months ago
A triangle has side lengths of 24 in., 32 in., and 40 in. Is the triangle acute, obtuse, or right? A) right. B) obtuse. C) acute
General
4 months ago
Match each quadratic equation with the best way to solve it. 1. 5x2 + 12x - 3 = 0 solve by square root method 2. x2 - 4x = 8 solve by quadratic formula 3. 4x2 - 25 = 0 solve by completing the square 4. x2 - 5x + 6 = 0 solve by factoring
General
4 months ago
A scientist measures the water temperature in the Gulf at Gulfport on the fifteenth of each month. Her data is shown in the table. What is the average rate of change between March 15 and June 15?A. 2.6°F per monthB. 3.9°F per monthC. 5.2°F per monthD. 7.8°F per monthPlease explain!
General
4 months ago
Francesca is planning to rent a van for her trip to Mt. Dora. Two of her friends reach rented the same type of van from the same car rental company last week. This is what they told her. Brynn:"The costt of my rental was $240. The company charged me a certain amount per day and a certain amount per mile. I had the rental for 5 days and I drove it 200 miles. Danielle: "The cost of my rental was only $100. I drove it for 100 miles and had it for two days." Francesca estimated her trip woul be 250 miles, and she would have the van for 4 days. Let C=Cost, M=miles, and d = days. a. C=40.00m + .20d b. C =40.00D + .20 M c. C=20.00M + 40 D d. C=20.00D + .40 M b. How much would francescas estimated cost be based on the equation?
General
4 months ago
0 ft elevation, diver is underwater at depth of 138 ft. In this area, the ocean floor has a depth of 247 ft. A rock formations rises to a peak 171 to above the ocean floor. how many feet below the top of the rock formations is the diver?
General
4 months ago
Jacob North wants to buy a 4-year old sedan. His friend has a V8 4-door sedan that he will sell Jacob at wholesale. The car has a manual transmission, a DVD player, leather sets, a power sunroof and 53,480 miles. A dealership down the street has a V6 4-door sedan that is being sold at retail. That car has power mirrors, front bucket seats, aluminum wheels, and 73,840 miles. It does not have air conditioning. Which car costs less, and how much less?
General
4 months ago
A rectangle has a length that is 5 inches greater than its width, and its area is 104 square inches. The equation (x + 5)x = 104 represents the situation, where x represents the width of the rectangle. (x + 5)x = 104 x2 + 5x – 104 = 0 Determine the solutions of the equation. What solution makes sense for the situation? x = What are the dimensions of the rectangle? width =inches length =inches
General
4 months ago
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