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When I multiple two negative numbers together is my answer positive or negative?

My favourite way to remember whether my answer is positive or negative when I multiply two numbers is to think of the following: a) If you multiply two numbers with the SAME sign (i.e. two positive numbers o...
HS
Answered by Hannah S. • Maths tutor
5369 Views

Expand and simplify the following; (2 + 3^0.5)^2 - (2 - 3^0.5)^2

(2 + 3^0.5 )^2 - (2 - 3^0.5 )^2 Firstly we will start by seperating the 2 brackets. This will give us 1 : (2+ 3^0.5 )^2 2 : (2 - 3^0.5 )^2 We will start by expanding our brackets. To do this we use the rule;...
MN
Answered by Mickey N. • Maths tutor
10875 Views

A bullet is fired horizontally from a rifle 1.5m from the ground at 430m/s. How far does it travel and for how long does it travel before it hits the ground?

A bullet is fired horizontally from a rifle 1.5m from the ground at 430m/s. How far does it travel and for how long does it travel before it hits the ground? Assuming that air resistance is negligable What's...
TA
Answered by Tim A. • Physics tutor
104416 Views

What is the difference between the passato prossimo, the passato remoto and the imperfetto?

All three of these indicate actions which occured in the past, but vary depending on duration and relevance to the present time. The passato prossimo is used for past events which have just happened and are ...
ED
Answered by Emily D. • Italian tutor
16500 Views

How can I write a good essay in exam conditions?

First off- practice as much as possible! The more practice tests you do in exam conditions, the more you'll get used to writing under extreme time pressure. Make sure you set aside a bit of time (5-10 minute...
ED
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