Answer:
Step-by-step explanation:
(a)
perfect positive correlation.
As x increases by 1, y increases by 1
y is 1 times x
equation: y = x
(b)
perfect negative correlation.
As x increases by 1, y decreases by -4
y is times x
equation: y = -4x
Given that the perimeter is 16ft and width is 5 ft,
Distribute 2:
Take away 10 from both sides:
Evaluate the right hand side:
Divide by 2 on both sides:
This is probably the shortest proof.
Given m × 5 = m × 6,
Subtract 2m from both sides,
The equality didn't change just it's form since we are executing operations on both sides of the equation. Therefore,
Hope this helps.
<u>r3t40</u>
Answer: 0.55567
Step-by-step explanation:
Given : A certain brand of refrigerator has a useful life that is normally distributed with mean 10 years and standard deviation 3 years. The useful lives of these refrigerators are independent.
i.e.
Let and are two randomly selected refrigerator's life whose sum will exceed third selected refrigerator .
So that,
Mean
Standard deviation =
Z-score :
Now , The probability that the total useful life of two(i..e n=2) randomly selected refrigerators will exceed 1.9 times the useful life of a third randomly selected refrigerator would be :-
Hence, the required probability is 0.55567.
Bro copy the whole problem and paste it in brainly you’ll get the right answer works every time !!!!