Math Check my Answers please ?
posted by Hannah .
1.)if an object is dropped from a height of 144 ft the function h(t)=16t^2+144 gives the height of the object after t seconds. when will the object hit the ground?
a.)1.5 seconds
b.)3 seconds ***
c.) 6 seconds
d.)9 seconds
2.) the area of a play ground is 64 square yards. the length of the play ground is 4 times longer than its width. find the length and the width of the play ground.
a.) L=16 yards; w=4 yards ***
b.)L=2 yards ; w= 32 yards
c.) L=32 yards ; w=2 yards
d.) L=4 yards ; w=16 yards

Math Check my Answers please ? 
Steve
good work. both correct.
Respond to this Question
Similar Questions

math
the height, in feet, of a freefalling object t seconds after being dropped from an initial height s can be found using h=16t^2+s. An object is dropped from a helicopter 784 feet above the ground. How long will it take the object … 
Math
An object is dropped from a hotair balloon 1296 feet above the ground. The height of the object is given by h=16(t9)(t+9) where the height h is measured in feet, and the time t is measured in seconds. After how many seconds will … 
Math
An object is propelled vertically upward from the top of a 144foot building. The quadratic function s(t)= 16t2+192+144 models the ball's height above the ground, in feet, s(t) seconds after it was thrown. How many seconds does it … 
math
An object is dropped from 39ft below the tip of the Petronaas Twin Towers in Kuala Lumpur, Malaysia. The height h of the object after t seconds is given by the equation h=16t+1444. Find how many seconds pass before the object reaches … 
Algebra
If an object is dropped from a height of 144 ft, the function h(t) = –16t² + 144 gives the height of the object after t seconds. When will the object hit the ground? 
Algebra Question~!
If an object is dropped from a height of 200 feet, the function h(t)=16t^2+200 gives the height of the object after t seconds. Approximately, when will the object hit the ground? 
Algebra
If an object is dropped from a height of 144 ft, the function h(t) = –16t² + 144 gives the height of the object after t seconds. When will the object hit the ground? 
Algebra
The height of an object after it is released can be modeled by the function f(t)=16t^2+vt+s, where t is the n? 
Math  Geometry
An object is launched from certain height into the air. The height is modeled by the the function h(t) = 4.8t^2+23t+20. The time (t) is measured in seconds. A) What is the maximum height? 
Math
An object is thrown upward from the top of a 160foot building with an initial velocity of 144 feet per second. The height, h, of the object after t seconds is given by the equation h=16t^2+144t+160. When will the object hit the ground?