subject
Mathematics, 21.11.2019 03:31 Geo777

Arock is thrown upward from a bridge into a river below. the function f(t) = -16t^2+38t+138 determines the height of the rock above the surface of the water (in feet) in terms of the number of seconds t since the rock was thrown.

a. what is the bridge’s height above the water? in feet

b. how many seconds after being thrown does the rock hit the water? in seconds

c. how many seconds after being thrown does the rock reach its maximum height above the water? in seconds

d. what is the rock’s maximum height above the water? i’m feet

going into detail about how to solve this would be appreciated

ansver
Answers: 2

Another question on Mathematics

question
Mathematics, 21.06.2019 12:30
Which triangles area would be calculated using the trigonometric area formula
Answers: 1
question
Mathematics, 21.06.2019 20:30
Two angles are complementary. the larger angle is 36 more than the smaller angle. what is the measure of the larger angle?
Answers: 2
question
Mathematics, 22.06.2019 00:00
The width of a rectangle is half as long as the length. the rectangle has an area of 18 square feet. what are the length and width of the rectangle?
Answers: 1
question
Mathematics, 22.06.2019 00:30
1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?
Answers: 2
You know the right answer?
Arock is thrown upward from a bridge into a river below. the function f(t) = -16t^2+38t+138 determin...
Questions
question
Health, 11.11.2020 17:10
question
Health, 11.11.2020 17:10
question
Health, 11.11.2020 17:10
question
Physics, 11.11.2020 17:10
question
Mathematics, 11.11.2020 17:10
question
Computers and Technology, 11.11.2020 17:10