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taurus [48]
1 year ago
15

Evaluate f(-2) if f(x) = x²+ 3x +1

Mathematics
1 answer:
Zinaida [17]1 year ago
4 0

Answer:

-1

Step-by-step explanation:

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In a shipment of 600 parts, 30 are found to be defective. How many defective parts should be expected in a shipment of 1000?
kobusy [5.1K]
We can except 30/600 = 0.05>> 5%percent,
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Determine whether the situation calls for a survey, an observational study, or an experiment.
antoniya [11.8K]

Answer:

The answer is "experiment."

Explanation:

When it comes to finding out whether a new reading program can increase reading comprehension, an experiment is important. <em>This procedure is being used in order to validate a hypothesis, particularly in a research study.</em> In the situation above, you have to validate whether a new reading program can increase the reading comprehension or not.

The experiment consists of the <em>independent, dependent and controlled variables.</em> The independent variables are the ones being changed by the researcher, while the dependent variables tell whether the changes in the independent variable is significant. The controlled variables are the ones that are constant.

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4 0
3 years ago
There are 190 students taking band, chorus , or both. If there are 180 students taking band and 60 students in both hand and cho
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7 0
3 years ago
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What is 1+1. Thank you
scoundrel [369]

Answer:

2

Step-by-step explanation:

your welcome

7 0
3 years ago
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Rearrange the equation so q is the independent variable.<br><br> 9q-4=3r-6<br><br> r = __
erik [133]

Answer:r=3q+2/3

Step-by-step explanation:

Step 1: Flip the equation.

3r-6=9q-4

Step 2: Add 6 to both sides.

3r-6+6=9q-4+6

3r=9q+2

Step 3: Divide both sides by 3.

3r/3=9q+2/3

r=3q+2/3

Hopefully it’s right

6 0
3 years ago
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