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the average gas milage of a certain model car is 29.0 miles per gallon. if the gas mileages are normally distributed with a standard deviation of 0.6 miles per gallon, find the probability that a car has a gas mileage of between 28.8 and 29.2 miles per gallon.A:0.321 B:0.261C:0.851D:0.131
General
6 months ago
students in a cooking class made 4 1/2 quarts of soup.They served 4/5 of the soup to friends.Each serving is 3/5 quart.Hector incorrectly says that there were 3 3/5 serving of soup.What is the correct number of servings ? what did Hector do wrong ?
General
6 months ago
motorboat travels 9 miles downstream (with the current) in 30 minutes. The return trip upstream (against the current) takes 90 minutes. Which system of equations can be used to find x, the speed of the boat in miles per hour, and y, the speed of the current in miles per hour? Recall the formula d = rt. 9 = 0.5(x – y) 9 = 1.5(x + y) 9 = 1.5(x – y) 9 = 0.5(x + y) 0.5 = 9(x – y) 1.5 = 9(x + y) 1.5 = 9(x – y) 0.5 = 9(x + y)
General
6 months ago
steven buys 2.32 pounds of trail mix and twice as many pounds of dried fruit what is the total cost
General
6 months ago
The equation of the quadratic relationship is y=−0.07(x−10.76)²+14.8. That equation references the coordinates (10.76,14.8). What is the significance of those coordinates?
General
6 months ago
the graph shows the solution to which system of inequalities
General
6 months ago
Rachel earned $34 in 4 hours at her job today. She wants to know how much she could earn tomorrow if she works 10 hours at the same hourly rate.
General
6 months ago
In triangle JKL, If angle L is thirteen more than angle K and angle J is seven times more than six times angle K, find the measure of each angle.
General
6 months ago
The formula for the sum of an infinite geometric series, s=a1/1-r, may be used to convert 0.23 to a fraction. What are the values of a1 and r?
General
6 months ago
Pennies used to be made of copper and zinc and had a mass of 3.1g today pennies are made of copper plated zinc and have a mass of 2.5 G. A new pennies mass is what percent of an old pennies mass?
General
6 months ago
Andrea put 2 quarts of water and 1 cup of lemon juice in a pitcher how many total cup of liquid are in the pitcher
General
6 months ago
Solve the system of equations using any method. 6x + 4y = −8 4x − 2y = 2
General
6 months ago
Algebra questions^^^^^^
General
6 months ago
A company offered one half of its employees a bonus if the production of gears increased by 50%. The other half of the employees was not offered a bonus. As the end of the month, production in the group that did not get the bonus offer increased by a mean of 20 and production in the bonus group increased by a mean of 40. What is the correct order of steps to determine if the results are significant? A. Calculate the probability of a difference of 20. B. Randomly separate the employees’ individual results into two groups. C. Calculate the mean of each group. D. Calculate the difference of the means. E. Run the experiment many times.
General
6 months ago
A plumber charges $25 to come to a home, and $50 per hour for a repair. Which equation gives the total cost, y, for a repair that lasts x hoursa) 15x-25=yb) 15x+25=yc) 25x-15=yd) 25x+15=y
General
6 months ago
Yoku Is putting on sunscreen. He uses 2 ml to cover 50 cm² of his skin. He wants to know how many milliliters of sunscreen he needs to cover 325 cm² of the skin.
General
6 months ago
Find the equation of a line parallel to y - 5x = 10 that passes through the point (3, 10). (answer in slope-intercept form)A) y = 5x - 5 B) y = 5x + 5 C) y = -5x - 5 D) y = 15x - 5
General
6 months ago
In the morning, a farm worker packed 3 pints of strawberries every 7 minutes. In the afternoon, she packed 2 pints of strawberries every 5 minutes. What was the difference between her morning and afternoon packing rates?
General
6 months ago
rectangle A measured by 3 inches. Rectangle B is a scaled copy of rectangle A. Select all of the measures pairs that could be the dimensions of rectangle B. A. 4.5 inches by 1.5 B. 8 inches by 2 inches D. 13.5 inches by 4.5 inches E. 90 inches by 30 inches
General
6 months ago
Ross is analyzing a circle, y2 + x2 = 64, and a linear function g(x). Will they intersect?
General
6 months ago
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