Answer:
Step-by-step explanation:
To find the value of x, using Pythagorean theorem.
x² = 6² + 4²
= 36 + 16
= 52
= 2*2*13
x = √2*2*13
x = 2√13
Answer:
mean is 12
Step-by-step explanation:
The mean is another word for average
Add all the numbers together
(5+4+5+4+42) = 60
Divide by the number of numbers. There are 5
60/5 = 12
5(5+x) = 6(6+4)
25+5x = 60
5x = 35
x = 7
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3(3+5) = 4(4+x)
24 = 16 + 4x
4x = 24-16
4x = 8
x = 2
