Answer:
– Practicing is key. ...
2 – The formula sheet is your best friend. ...
3 – Understand what your calculator can do. ...
4 – Understanding the derivations of certain formulas. ...
5 – Understand your mistakes and close up any knowledge gaps. ...
6 – Practice on example questions in your textbook.
Answer:
30kg
Step-by-step explanation:
mass of 1 Chocolate bar = 200g
Box = 150 chocolate bar
150x200g = 30,000g
1kg =1000g
so 30,000g/1000g x 1kg
= 30kg
Answer:


Step-by-step explanation:

Completing the square is a process of converting a quadratic equation in standard form into vertex form.
The first step in completing the square is grouping the quadratic and linear terms of the quadratic equation.

Factor out the coefficient of the quadratic term,

Now complete the square, add a term to make the grouped part of the equation a complete square, then balance the equation.

Simplify,



The x-coordinate of the vertex of the equation is equal to (-1) times the numerical part of the quadratic term, and the y-coordinate is equal to the constant.

So, h(t) is how far is Daniel's head from the surface of the water, namely the surface itself is when the height is nill, so his head is at the surface and the height of it is just 0, thus h(t) = 0. Namely, what is "t" when h(t) is 0?

clearly the seconds cannot be a negative unit, so is not -3/2.