Answer:
-6x-4
Step-by-step explanation:
-2(3x + 2) =
-6x + (-4) =
-6x-4
No, the game is not fair because grace has a higher probability of choosing a marble of another color
Answer:
(2 , 72) and (5 , 180)
Step-by-step explanation:
when x = 2 , y = 36× 2 = 72 (2,72)
when x = 4 , y = 36×4 = 180 (4,180)
Three students want to estimate the mean backpack weight of their schoolmates. To do this, they each randomly chose 8 schoolmates and weighed their backpacks. Then as per the given sample data,
(a) The sample means of the backpacks are: 6.375,6.375,6.625
(b) Range of sample means: 0.25
(c)The true statement is: The closer the range of the sample means is to 0, the less confident they can be in their estimate.
For the first sample, mean= 6.375
For the second sample, mean= 6.375
For the third sample, mean= 6.625
Range of sample means=Maximum Mean- Minimum Mean
= 6.625 - 6.375
= 0.25
The students will estimate the average backpack weight of their classmates using sample means, the true statement is:
The closer the range of the sample means is to 0, the more confident they can be in their estimate.
Learn more about range here:
brainly.com/question/24326172
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