<span>5 x 4 x 3 x 2 x 1 = 120
The first person can move 5 positions since he is first. The second person can move 4 positions since one is already occupied, and so on...</span><span />
Answer:
6.5 = x
Step-by-step explanation:
(x - 4)2 = 5
2*x + 2*-4 = 5
2x - 8 = 5
2x = 13
x = 6.5
Answer:
a) additive property of equality
Step-by-step explanation:
You canceled the addition of 21 to help simplify the equation.
<h2>
<em><u>Pls mark brainliest!</u></em></h2>
This isn't the only trick you'll need, but it will help you get these expressions in terms you'll be able to handle more easily.
For example, for the cot example above:
cot(-pi/2) = cos(-pi/2)/sin(-pi/2) = 0/-1 = 0
