![christinavelez26](/avatars/26979.jpg)
christinavelez26
10.07.2019 •
Mathematics
The height h in feet of a projectile launched vertically upward from the top of a 96 foot tall bridge is givem by h=90+16t-16t^2 where t is time in seconds. what is the maximum height an how long will it tale the projectile to strike the ground?
Solved
Show answers
More tips
- S Science and Technology How to Secure Exam Sessions: Silence Mobile Phones in the Classroom...
- G Goods and services How to Choose a Bread Maker?...
- A Art and Culture Who Said The Less We Love a Woman, the More She Likes Us ?...
- F Family and Home How to Get Rid of Your Neighbors?...
- S Society and Politics How Could Nobody Know About the Dead Mountaineers?...
- H Health and Medicine How to Cure Adenoids?...
- H Health and Medicine Why Wearing a Back Brace Can Be Beneficial During Back Strain?...
- S Sport When and Where Will the 2014 World Cup be Held?...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
Answers on questions: Mathematics
- M Mathematics PLEASE HELP ASAP can you help me please...
- M Mathematics Pythagorean theorem question, images attatched...
- M Mathematics Solve: x+y=1 -2x+y=4 student work: x+y=1 +y=4) -x+0y=-3 -x = -3 -1 -1 x=3 3+y=1 -3 -3 y=-2 (3,-2)what is the mistake...
- M Mathematics marco has a rope that is 16 feet long. He ties his rope to liam and pams with a square knot that uses 1 1/8 feet of rope. How long are the three ropes tied together? Write and solve...
- M Mathematics Give a counterexample to this statement. if a triangle measures 180°, each angle is 60°...
- M Mathematics Please help me thanks...
Ответ:
h(t)= -16t^2+16t+90
h(t) = -16(t^2 - t) + 90
h(t) = -16(t^2 - t + (1/2)^2) + 90 + 4
h(t) = -16(t - 1/2)^2 + 94
vertex at(1/2 , 94) , since a = -16 < 0 , the parabola opens down, which makes the vertex. the global maximum, so:
Max at(1/2 , 94)
object hits the ground at h = 0, then:
-16(t - 1/2)^2 + 94 = 0
(t - 1/2)^2 = 94/16 = 47/8
t - 1/2 = ± √(47/8)
t = 1/2 ± √(47/8)
t = -1.9 , 2.9 => reject t = -1.9
t = 2.9 sec => time it takes for the projectile to hit the ground
Ответ:
-12+
Step-by-step explanation:
Hope this helps :)
Brainest pls?
Thanks