I do not know the last question but I know the first it is4 time I hope I am right
It is not proportional because the different weights of books have a different rate of change. Having a constant rate of change is something you need for a relationship to be proportional.
Hope this helps!
Answer:
84,988
Step-by-step explanation:
200x400= 80,000+ 5,000= 85,000-12=84,988
Answer:A. -1.11x^2+ 3.74+ 10.64
Step-by-step explanation:
a. p. e. x. (just took the test)
A^2 + B^2 = c^2
12^2 + b^2 = 20^2
144 + b^2 = 400
-144 -144
b^2 = 256
sqrt(b^2) = sqrt(256)
b=16
x=16
You’re using the Pythagorean theorem to solve for this where (a) represents a side of triangle, (b) represents another side and (c) represents the hypotenuse.