Answer:
option (4)
Step-by-step explanation:
Calculate the length using the distance formula
d = 
with (x₁, y₁ ) = A(2, 2) and (x₂, y₂ ) = B(- 6, 4)
AB = 
= 
= 
= 
≈ 8.25 ( to 2 dec. places )
The answer is 2 2/5. Need an explanation
Answer:
The number of heads observed is 121.14 heads
Step-by-step explanation:
The formula for the z-score of a proportion is given as follows;

Where:
= Sample proportion
p = Population success proportion = 0.5
q = 1 - p = 1 - 0.5 = 0.5
n = Number in of observation = 200
z = 2.99
Hence, we have;

Therefore;

= 0.6057

∴ The number of heads observed = 200 × 0.6057 = 121.14 heads.
Answer:
substitute the input (the given number or expression) for the function's variable (place holder, x).
Replace the x with the number or expression.
Example:
f(x)=3x-5 and f(4)
f(x)=3(4)-5
f(x)=12-5
f(x)=7
final answer is (4,7)