This question was on my test and trying to solve it i need help :
Elizabeth is going to flip a fair coin 100 times.
What is the best prediction for the number of times that the coin will land tails up?
Choose 1

(Choice A)
A
Exactly 200 times

(Choice B)
B
Close to 200 times but probably not exactly 200 times

(Choice C)
C
Exactly 50 times

(Choice D)
D
Close to 50 times but probably not exactly 50 times

D ) Close to 50 times but probably not exactly 50 times

Reasoning:

Right in the beginning, we know that she flips the coin 100 times. Which means A and B cannot be true. Between C and D, only D makes sense because you can't be sure if something will land exactly a number of times.

x = 2

step-by-step explanation:

if sr parallel to ba then the sides bc and ac are in proportion, that is

= ← substitute values

= ( cross- multiply )

27x = 6(4x + 1)

27x = 24x + 6 ( subtract 24x from both sides )

3x = 6 ( divide both sides by 3 )

x = 2