You are given four 400 mL beakers labeled #1, #2, #3, #4, four thermometers, and three hot plates. You place 300mL of ice in each beaker. Using the thermometers, you record the temperature of the ice in each of the four beakers. You place beakers #2, # 3, and #4 on the hot plates and turn #2 on low, #3 on medium, and #4 on high. You record the temperature every 2 minutes until the ice has melted, water is boiling, and vapor appears. Experimental Design In the experiment, the 300ML of ice was: O Independent variable O Constant O Control O Dependent variable

Alan has a new aquarium. The tank is in the shape of a rectangular prism,  4ft  long,  3ft  wide, and  2ft  deep. He plans to raise fish and sell them to a local pet store. The pet store will inspect the aquarium to make sure that the fish are being kept in a healthful environment. One of the main concerns is that each fish has enough water. Alan looks up the amount of water needed for the species of fish he plans to raise. He finds the answer, but it is given in cubic inches. (a) Find the volume of water that the tank holds in cubic inches. Use the table of conversion facts, as needed.   in3 (b) The particular species Alan plans to raise requires at least  1290in3  of water per fish. If there is any amount less than this, no matter how much less, the pet store will not accept Alan's fish. What is the largest whole number of fish that he can keep in the aquarium?   fish (c) The pet store will pay  $7.99  for each fish. If he fully…

Please fill in the blanks to the problem in the attached image.

(b) Compute the mean and standard deviation of the random variable using Hx = E[x•P(x)] and ox = Hx = (Round to two decimal places as needed.)

You need a 50% alcohol solution. On hand, you have a 500 mL of a 95% alcohol mixture. How much pure water will you need to add to obtain the desired solution?

- a. ARWZ W WZ RW b. ? ZR %3D c. RW = 15, ZR = 10, and SZ = 8. WZ 2 and RS = ? R

One solution was 10% glycol and another was 40% glycol. How much of each should be used to get 800 liters of a solution that is 19% glycol?

Amy needs to make 10 L of 42% sulphuric acid solution. In the supply room, she finds bottles of 30% sulphuric acid solution and 60% sulphuric acid solution. What volume of each solution should she mix in order to make the 42% solution?

Mr. and Mrs. Wagner are getting ready to drive across the US from Philadelphia, PA to Los Angeles, CA over five (5) days. The TOTAL distance is approximately 3,000 miles. The average price of gasoline is $4.10 per gallon. They plan to stay in a hotel four (4) nights. They are budgeting $50 per day per person to cover the cost of three (3) meals per day each.    If their van averages 25 mpg, estimate how many gallons of gasoline are needed for the trip. Select the correct answer below.