anonymous
  • anonymous
vertex and roots of f(t)-16t^2+70t+4
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
jamiebookeater
  • jamiebookeater
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
f(t)=-16^2+70t+4 sorry
dumbcow
  • dumbcow
f'(t) should be -32t + 70 to find vertex set equal to 0
anonymous
  • anonymous
ahhh sorry it's -16t^2+70+4 we're supposed to find -b/2a to find t, then plug that in the find vertex, and then the roots i came up with were 35+or-sqrt1097 divided by 16

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

dumbcow
  • dumbcow
sorry about that, vertex looks good check the sqare root part in the quadratic formula
dumbcow
  • dumbcow
i get 35 +- sqrt(1289) divided by 16
anonymous
  • anonymous
b^2=35*35=1225 4ac=4(8)(4)=128 1225-128=1097? I think thats right, its asking for x-intercepts to graph it. how do i graph this?
dumbcow
  • dumbcow
redo the problem, this time looking closely at the signs.
anonymous
  • anonymous
-4 got it. thank you!!!!!!!
dumbcow
  • dumbcow
4ac = 4(-8)(2)
anonymous
  • anonymous
ooooh yeah. haha. thank you so much. but that means there are no x-intercepts right?
dumbcow
  • dumbcow
ok so now x = (35+- sqrt(1289))/16 those two x values are your x-intercepts graph them as 2 points. (x1,0) and (x2,0)
dumbcow
  • dumbcow
get a graphing calculator to check your answers
anonymous
  • anonymous
but you can't graph that what we got for x
dumbcow
  • dumbcow
do you mean on a graphing calculator or by hand
anonymous
  • anonymous
so like the question is about baseball and how long it takes for the ball to hit the ground and after how many seconds. when i graph it, (0,4) is the y-int, (35/16, 1289/16) is the vertex (or the highest point the ball gets to) and then to figure out when the ball lands on the ground would be the x-int
dumbcow
  • dumbcow
the x-int would be one of the answers derived from the quadratic formula.
anonymous
  • anonymous
even if its like never ending full of decimals? would i just round it up?
dumbcow
  • dumbcow
yes round to two or three decimal places depending on what your teacher prefers.
anonymous
  • anonymous
oh ok. i think i got it this time then. thanks for all your help! =]
dumbcow
  • dumbcow
you're welcome. next time you ask for help it would be beneficial to state the entire problem not just the part you're stuck on. it gives me context. Thanks!

Looking for something else?

Not the answer you are looking for? Search for more explanations.