Disregarding air friction, the distance traveled by an object due to gravity is : H = 0.5*g*t^2. g is the gravitational constant at the surface of earth.
g= 9.81 m/s^2
After 3 seconds, Distance = .5*9.81*9 = 44.15 meters traveled.
Since it was dropped from a height of 90 meters, the current height is 90 - 44.15 = (a) 45.85 meters
(b) It has to travel 90 meters to hit the ground . So we must find t
Using the same equation
t = (2*H/g)^.5
t = (2*90/g)^.5 = 4.28 seconds until it hits the ground
Answer:
the number of boys and girls on a team is 58 and 26 respectively
Step-by-step explanation:
Given that
Total members in swimming team is 84
Let us assume the number of girls be x
so, the number of boys would be
y = 2x + 6
Now the equation is
x + y = 84
x + 2x + 6 = 84
3x = 78
x = 26
And, y = 2 × 26 + 6
= 52 + 6
= 58
Hence, the number of boys and girls on a team is 58 and 26 respectively
Answer:
The coordinates of the midpoint of the segment is (1,3.5)
Step-by-step explanation:
In this question, we are concerned with finding the coordinates of the mid point of the line that joins segment lb
To do this, we shall be using the midpoint formula;
(x,y) = (x1 + x2)/2, (y1 + y2)/2
Where (x1,y1) = (8,5)
(x2,y2) = (-6,2)
Thus;
(x, y) = (8 + (-6))/2, (5 + 2)/2
(x ,y) = (2/2), (7/2)
(x,y) = (1,3.5)
#1 is 13. 549
#2 is 400,000+30,000+5,000+600+40+7
I just figured it out so I’ll answer it on this account lol.
Q1 = 32, Q2 = 45, Q3 = 52
Interquartile range = 52 - 32 = 20
Range = 68 - 21 = 47
