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3 years ago

Over which interval is the graph of f(x)= -(x+8)^2 decreasing

Mathematics

1 answer:

marusya05 [52]3 years ago

3 0

Over $(-8,+\infty)$ .

Hope this helps.

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I will make you the brainleist!!!! Please explain and no guessing. Thank you!! Ps due in 10

aniked [119]

Is this even a question? its 66/100 you always use the first examining over 100.... makes sense

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James is applying for a new job at a game design company. Job A offers $40,000 starting salary with a $1000 raise each year. Job

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Job B because every year he gets a $2800 every year and if he continues for 5 years he will get a total of $14000 but if he works at job A he gets $5000 after 5 years

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Rewrite as an exponential function<br> ln9=y

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ln9 = y can be rewritten into an exponential function as y = e^9

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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

Which of the following is a rational number?

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Answer:

Square root of 100.

Step-by-step explanation:

Step-by-step explanation:

We can write 10 as a fraction 10/1, therefore, $\sqrt{}$ 100 is a rational number.

Part A : A rational no. between 5.2 and 5.5 is 5.3.

It is rational because it can be expressed in the form

p/q where p and q are integers and q is not equal to 0, which is 53/10

Part B: A rational no. between 5.2 and 5.5 is 5.29150262213

An irrational number between 5.2 and 5.5 is 5.29150262213. It is irrational because there is no pattern that repeats and it cant be written as a fraction of two whole numbers.

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