Answer:
Work out the Mean (the simple average of the numbers)
Then for each number: subtract the Mean and square the result.
Then work out the mean of those squared differences.
Take the square root of that and we are done!
Answer:
45 centimeters squared (45 square centimeters - same thing)
Explanation:
First we need the area of each shape
To find the area of a right triangle we multiply the length of the legs and then divide by 2 - ab/2
Triangle 1: 6 centimeters squared
Triangle 2: 9 centimeters squared
To find the area of a rectangle you multiply the length by the width - lw
Rectangle: 30 centimeters squared
Now we add the values together:
6 + 9 + 30 = 45 centimeters squared
That is my answer, if you need anything else or more clarification I will edit this :)
Answer:
We conclude that:
Step-by-step explanation:
Given the expression
Apply the rule:
so the expression becomes
Apply the rule:
so the expression becomes
∵ 
Therefore, we conclude that:
Answer:
30 because 3 x 5=15 then x2 it's 30
