So the Pythagorean Theorem is a²+b²=c² pretty much all you do is plug in what you know. So for number 3 you would plug in the numbers that you know into the formula.
20²+b²=25²
BD isn't needed in the formula because it's not apart of the legnth we are looking at so you dont need to worry about that.
Now do what the formula says..
400+b²=625
then you would subtract
625-400= 225
and "un-square" the answer by finding the square root
√225 = 15
AB= 15
you can always check your answer
20²+15²=25²
400+225=625
Answer:
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It might be a little late BUT the answer is B
Answer:
See attached
Step-by-step explanation:
Answer is attached
Because for input=-2 there are more than one outputs. It means the this is not a function and it’s impossible to find a rule.
