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a projectile is thrown upward so that its distance above the ground after t seconds is given by the function h(t) = -16t2 + 640t. after how many seconds does the projectile take to reach its maximum height? show your work for full credit.

The projectile reaches its maximum height after 20 seconds.

Step-by-step explanation:

Given the function:

You can following formula (which gives the x -coordinate of the vertex of the parabola) in order to find after how many seconds the projectile takes to reach its maximum height:

In this case you can identify that the values of "a" and "b" are:

Then, substituting values into the formula, you get the following result:

Therefore,based on this, the conclusion is: The projectile reaches its maximum height after 20 seconds.

dilation scale factor 2: starting with δabc, draw the dilation image of the triangle with a center at the origin and a scale factor of two. notice that every coordinate of the original triangle has been multiplied by the scale factor (x2). dilation with scale factor 2, multiply by 2.

0lz try yourself sorry for not answering