Evaluate for 5 a - 2 x a for a = 6 Ill give brainliest pls its an emergency i need it fast :((

Mathematics

1 answer:

Anna007 [38]4 years ago

7 0

hope that helps :)

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PLS PLS PLS PLS HELP ITS EASY111 BRAINLIEST POINTS

shusha [124]

Answer:

I think it's A

Step-by-step explanation:

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3 years ago

Its on the picture, plz go fast

Naily [24]

Answer:

Elimination

Step-by-step explanation:

You would not do substitution since it would not work so you do elimination since the 4y and -4y eliminate then you just solve for it.

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2 years ago

Plz, help! I don't know this ! will give brainlest!

Jlenok [28]

Answer:

its the mean for the data, its showing you the average studying time

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3 years ago

Suppose the weights of tight ends in a football league are normally distributed such that σ2=1,369. A sample of 49 tight ends wa

Darya [45]

Answer:

Step-by-step explanation:Answer Explanation

Correct answers:

$\left(241.42,\ 262.14\right)$

A 95% confidence interval for μ is (x¯−zα/2σn‾√,x¯+zα/2σn‾√). Here, α=0.05, σ=37, and n=49. Use Excel to calculate the 95% confidence interval.

1. Open Excel, enter the given data in column A, and find the sample mean, x¯, using the AVERAGE function. Thus, the sample mean, rounded to two decimal places, is x¯=251.78.

2. Click on any empty cell, enter =CONFIDENCE.NORM(0.05,37,49), and press ENTER.

3. The margin of error, rounded to two decimal places, is zα/2σn‾√≈10.36. The confidence interval for the population mean has a lower limit of 251.78−10.36=241.42 and an upper limit of 251.78+10.36=262.14.

Thus, the 95% confidence interval for μ is (241.42, 262.14).

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3 years ago

Evaluate 8a-1+0.5b8a−1+0.5b8, a, minus, 1, plus, 0, point, 5, b when a=\dfrac14a=

professor190 [17]

Answer: $6$