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sergij07 [2.7K]
3 years ago
5

According to the scientific method, what should you do before you formulate a hypothesis? A. Collect data. B. Make observations

and identify the problem. C. Study the results. D. Tell other scientists what you discovered.
Mathematics
2 answers:
IgorC [24]3 years ago
8 0

Answer:

B

Step-by-step explanation:

Okay so the first answer you can't collect data on something you don't know about. B is the correct answer because you need to make observations and identfy the problem. C. You have no results to study if you don't make observations. D. If you don't study and follow the steps theres nothing to tell anyone you discovered

ZanzabumX [31]3 years ago
7 0

Answer:

B

Step-by-step explanation:

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A city has a population of 2,000 if 1,500 residents speak Spanish what percent of the population is Spanish speaking
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75%

Step-by-step explanation:

Find the ratio 1500 to 2000; it is 0.75.

75% of the population is Spanish speaking.

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2 years ago
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Please help I don't get number five and please explain
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3 years ago
Find the area between the graph of the function and the x-axis over the given interval, if possible.
vodomira [7]

Answer:

A= -\frac{5}{-1} - \lim_{x\to\infty} \frac{5}{x-2} = 5-0 = 5

So then the integral converges and the area below the curve and the x axis would be 5.

Step-by-step explanation:

In order to calculate the area between the function and the x axis we need to solve the following integral:

A = \int_{-\infty}^1 \frac{5}{(x-2)^2}

For this case we can use the following substitution u = x-2 and we have dx = du

A = \int_{a}^b \frac{5}{u^2} du = 5\int_{a}^b u^{-2}du

And if we solve the integral we got:

A= -\frac{5}{u} \Big|_a^b

And we can rewrite the expression again in terms of x and we got:

A = -\frac{5}{x-2} \Big|_{-\infty}^1

And we can solve this using the fundamental theorem of calculus like this:

A= -\frac{5}{-1} - \lim_{x\to\infty} \frac{5}{x-2} = 5-0 = 5

So then the integral converges and the area below the curve and the x axis would be 5.

7 0
3 years ago
What is the average rate of change between f (1) and f (5) in the function f (x) = x2 - x - 6 ?
NISA [10]

Answer:

{ \tt{average =  \frac{f(1) + f(5)}{2} }} \\  \\  = { \tt{ \frac{( {1}^{2}  - 1 - 6) + ( {5}^{2} - 5 - 6) }{2} }} \\  =  \frac{ - 6 + 14}{2}  \\  \\  = { \tt{4}}

5 0
2 years ago
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