The height of a model rocket is given (in centimeters) by the formula h=-490t^2h=−490t 2 , where t is measured in seconds and h = 0 refers to its original height at the top of a mountain. It begins to fly at time, t = 0. When has the rocket descended 490 centimeters? Write the equation of the rocket in standard form. = 0 Write the equation in factored form. = 0 Solutions to the equation t = or The rocket will descend 490 centimeters at

answer: asdfghjkl,mnbv

step-by-step explanation:

let's cover over the formula of the vertex:

y = a(x – h)^2 + k

in this formula, (h,k) are the vertex, always remember that the positive or negative value of the vertex is based on the sign it has.

for example, if the vertex is -3,-6 then both the x and y value would have the positive sign attached to it and if it were a positive x and y value, then a negative sign would be attached to it.

with that being said, for our problem the x value is a positive one so we are looking for a number with a negative sign next to it, in this case the first and second choice.

however, for the first answer choice it isn't quite part of the formula so we know that the answer choice correctly displays the x value.

to confirm, we can see if the -1 fits correctly with the second answer choice, and as mentioned above a negative number will have a positive sign attached to it. so, for our problem we can see that -1 has been changed to +1, so we can confirm that the second answer choice is correct.

hence, our final answer is y=(x - 1)^2 + 1

students group

step-by-step explanation:

a person who   joins a party or a seminar can explain his feelings about that particular occasion better more than anyone else.

as bella managed a show for the students in the school and invited students to watch that show

hence

students group will be the best group to survey to find this information

ur right ive taken the test

step-by-step explanation: