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A soccer ball is kicked toward the goal. The height of the ball is modeled by the function h(t) = −16t2 + 48t where t equals the time in seconds and h(t) represents the height of the ball at time t seconds. What is the axis of symmetry, and what does it represent? (2 points) t = 1.5; it takes 1.5 seconds to reach the maximum height and 3 seconds to fall back to the ground t = 1.5; it takes 1.5 seconds to reach the maximum height and 1.5 seconds to fall back to the ground t = 3; it takes 3 seconds to reach the maximum height and 3 seconds to fall back to the ground t = 3; it takes 3 seconds to reach the maximum height and 6 seconds to fall back to the ground
General
4 months ago
The distance a spring will stretch varies directly with how much weight is attached to the spring. If a spring stretches 11 inches with 75 pounds attached, how far will it stretch with 65 pounds attached? Round to the nearest tenth of an inch.
General
4 months ago
The length of one leg of a 45° − 45° − 90° triangle is 24. What is the perimeter of the triangle?
General
4 months ago
(6x 2 +11x - 35) (3x - 5)
General
4 months ago
Zach read a book for 10 minutes every weekend in the first month, 20 minutes in the second month, 40 minutes in the third month, and 80 minutes in the fourth month. Victoria read a book for 35 minutes every weekend in the first month, 50 minutes in the second month, 65 minutes in the third month, and 80 minutes in the fourth month. Which statement best describes the methods used by Zach and Victoria to increase the time they spent reading a book? Zach's method is linear because the number of minutes increased by an equal factor every month. Victoria's method is linear because the number of minutes increased by an equal number every month. Both Victoria's and Zach's methods are exponential because the number of minutes increased by an equal factor every month. Both Victoria's and Zach's methods are exponential because the number of minutes increased by an equal number every month.
General
4 months ago
An average adult can hear sounds with frequencies between 20 waves per second and 16,000 waves per second. What is the wavelength, in meters, of a sound wave with a frequency of 20 waves per second?
General
4 months ago
John and Gary share a workload. At a certain point, John worked 2 more hours than Gary. The next day, John has worked 4 of Gary’s usual hours. How many more hours has John worked than Gary?
General
4 months ago
The function h(t)=-4.87t^2+18.75t is used to model the height of an object projected in the air, where h(t) is the height in meters and t is the time in seconds. Rounded to the nearest hundredth, what are the domain and range of the function h(t)?
General
4 months ago
Linda deposits $1,800 into an account that pays 7.5% interest, compounded annually. Anna deposits $4,000 into an account that pays 5% interest, compounded annually. If no additional deposits are made to either account, what is the balance of each at the end of 10 years? (to the nearest dollar)A) Linda's account: $3,710Anna's account: $6,516 B) Linda's account: $2,315Anna's account: $5,860 C) Linda's account: $2,647Anna's account: $6,102 D) Linda's account: $3,150Anna's account: $4,200
General
4 months ago
The length of a rectangle is 5/2 units greater than twice its width. If its width is w, which expression gives the perimeter of the rectangle in terms of w? A. 2(5/2 w) + w B. 5/2 w + w C. 3 w + 10/2 D. 6 w + 5
General
4 months ago
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