Answer:
t = 2.52 seconds
Step-by-step explanation:
h=139-15t-16t^2
We want to know when the ball hits the ground
That would be when h=0
0 = 139-15t-16t^2
We can use the quadratic formula to find t
t = -b ± sqrt(b^2-4ac)
----------------------
2a
where a = -16 b = -15 and c = 139
t = -(-15) ± sqrt((-15)^2-4(-16)139)
----------------------
2(-16)
t = (15) ± sqrt(225+8896)
----------------------
-32
t = (15) ± sqrt(9121)
----------------------
-32
t = 15+ sqrt(9121) t = 15- sqrt(9121)
-------------------- or -------------------
-32 -32
-3.453247707 or 2.515747707
Since time cannot be negative
2.515747707
Round to the nearest hundredth
t = 2.52 seconds
So firstly, let's figure out the expression for a singular goody bag. Since there's 2 of each item, a single goody bag is going to be 
Now since we have 7 friends who are all getting 1 goody bag, multiply the cost of the goody bag by 7, and our expression is 
. Now we can solve it from there.
Firstly, solve the multiplication inside the parentheses: 
Now add up what's inside the parentheses: 
Lastly, multiply and <u>your answer will be $56.56</u>
Step-by-step explanation:
from the first shape bearing of C from D is the angle formed between the north pole and D = 100°
from the second second shape the bearing of C from D is the angle formed between the north pole and D= 235°
