Answer:
13
Step-by-step explanation:
x^2=5^2+12^2
x^2=25+144
x^2=169
x=13
steps
(x) = 5x^2-3x+7
refine
x=5x^2-3x+7
Switch sides
5x^2-3x+7-x=x-x
Subtract x from both sides
5x^2-4x+7=0
Solve with the quadratic formula
The mode is 7.
Mode means most and 7 hours of sleep is the most frequent.
-4.8
-24/5 = (-24) 5
= -4.8
