Answer:
i dont know SORRY
Step-by-step explanation:
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
Yes, the 3 feet are important.
<span>You can consider the datum (y=0) at 3' from the ground, and the ground is therefore at -3 feet. </span>
<span>The vertical initial velocity, vy, is u*sin(θ), so it gives </span>
<span>vy=55sin(44°)=38.21 approx. </span>
<span>The (vertical) distance travelled is given by: </span>
<span>S=vy*t-(1/2)gt² </span>
<span>where </span>
<span>S=-3 (ground) </span>
<span>vy=55sin(44°), and </span>
<span>g=32.2 ft/s² </span>
<span>Solve for t. </span>
<span>I get -0.08 and 2.45 s.</span>
Answer:
45 positive numbers have the sum of their digits equal to 8
Step-by-step explanation:
given data
number = 1 to 999
sum n = 8
to find out
positive numbers
solution
we will choose number by this formula
(n+1) (n+2) / 2
here n is 8
so put this value we get number that
positive numbers = (n+1) (n+2) / 2
positive numbers = (8+1) (8+2) / 2
positive numbers = 90 / 2
so 45 positive numbers have the sum of their digits equal to 8
