Plz help ive been stuck on this question forf about two days and i still dont know how to do it It needs to be squared than done but idk how and the work needs be shown someone plz help 3. The height, h, of a football in metres t seconds since it was kicked can be modelled by
= −.
+ . + .
a) What was the height of the football when the punter kicked it?
[1]
b) Determine the maximum height of the football, correct to the nearest tenth.
[4]
c) At what time was the maximum height reached?

idk

step-by-step explanation:

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.