Answer:
<h2>In the time interval of 10 to 30 seconds the rocket may safely be exploded.</h2>
Step-by-step explanation:
The height of the rocket is shown by 
.
= 0 gives t = 20 seconds.
The highest height that the rocket can go is at t = 20.
The rocket must be at least 1500 meters in the air to safely explode.
Hence, if s = 1500, then,
.
After 10 seconds and 30 seconds of firing, the rocket will be in a height of 1500 meter.
Hence, the time interval of safely explode is 10 ≤ t ≤ 30 seconds.
68.45-80 divided by 7.7= -1.50
So, according to table A, the area to the left of z=-1.5 is 0.0668.
“6.68% of runs give a speed of less than 68.45 mph”
Average price of a CD/ mp3 player is : $ 150
Meanwhile , average price of an mp3 player is : $50
To buy 4 cd/mp3 player, we need $ 150 x 4 = $ 600
To but an mp3 player, we need $50 x 3 = $ 150
The total is $ 750
Hope this helps
Answer:
5 × 10 ^ -6
to get the answer move the decimal in 0.000005 to 5 which 6 place forward
which can also be written as 5 × 10 ^ -6
hope it helps
Answer:
cos0 = 6.8556546i/23 or sqrt-47/23
Step-by-step explanation:
hypotenuse is 23, opposite is 24
we have to find the adjacent using the pythagorean theorem
24^2 + b^2 = 23^2
576+b^2=529
subtract
b^2=-47
b=sqrt-47
sqrt of -47 is 6.8556546i, there is an i since it is the square root of a <em>negative</em>
cos = adjacent/hypotenuse
