Answer:
<h3>3 secs</h3>
Step-by-step explanation:
Given the height of the object as it drops from the observation deck expressed as;
h= -16t^2+152
To determine the the time it will take the object to be 8 feet above the valley floor, we will substitute h = 8 into the equation and calculate t as shown;
8 = -16t^2+152
subtract 8 from both sides
8-8 = -16t^2+152-8
0 = -16t^2+144
0-144 = -16t^2
-144 = -16t^2
16t^2 = 144
Divide both sides by 16;
16t^2/16 = 144/16
t^2 = 9
t = √9
t = 3seconds
Hence it will take 3 seconds for the object to be 8 feet above the valley floor
Answer:
24 sq cm
Step-by-step explanation:
the big square is 20 and the small one is 4
17x+22 is the perimeter of the triangle
The actual distance between park and movie theater is 68 miles, if the park and movie theater are 3.4 inches apart on a map and the map has a scale of 0.25 inch = 5 miles.
Step-by-step explanation:
The given is,
Park and movie theater are 3.4 inches apart
Map has a scale of 0.25 inch = 5 miles
Step:1
Formula to calculate the number of scales for distance between park and theater,


= 13.6
number of scales for distance between park and theater = 13.6
Step:2
Formula to convert distance inches to miles
× 
= 13.6 × 5
= 68
Actual distance between park and theater = 68 miles
Result:
The actual distance between park and movie theater is 68 miles, if the park and movie theater are 3.4 inches apart on a map and the map has a scale of 0.25 inch = 5 miles.