Selena is standing on a rock cliff that is 52 feet high. she tosses a pebble upward over the edge, where it hits the top of a 12 foot high boulder. the quadratic equation that models the path of the pebble is given below. how long did it take for the pebble to hit the top of the boulder? p(t)=-16t^2+12t+52

At , the pebble hit the top of the boulder.

Step-by-step explanation:

Since we have given that

Distance at which Selena is standing on a rock cliff = 52 feet

Height of boulder above a rock cliff = 12 foot

So, the given quadratic equation would be

First we derivative it w.r.t  t,

Now, we will find the critical value,

Now, we will check whether it is maximum or not.

So, we get that it is maximum.

Hence, at , the pebble hit the top of the boulder.

1

step-by-step explanation:

it's the only multiple of both and the least

it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540