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ipn [44]
3 years ago
10

Given, f(x)=x²-2x+3, find f(-2)

Mathematics
1 answer:
Angelina_Jolie [31]3 years ago
3 0

Answer:

11

Step-by-step explanation:

(-2)^2-2(-2)+3

(-2)(-2)+4+3

4+4+3

8+3

11

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The following is a set of hypotheses, some information from one or more samples, and a standard error from a randomization distr
Tanya [424]

Complete Question

The following is a set of hypotheses, some information from one or more samples, and a standard error from a randomization distribution. Test H_o : p =  0.28 vs H a : p <  0.28when the sample has n 900 , and \^ p = 0.216 with SE=  0.01 . Find the value of the standardized z -test statistic. Round your answer to two decimal places.

Answer:

The value is  z =  -6.40

Step-by-step explanation:

Generally the standardized test statistics is mathematically represented as

     z =  \frac{\^ p  -  p }{ SE }

=>  z =  \frac{0.216  -  0.28 }{ 0.01  }

=>  z =  \frac{0.216  -  0.28 }{ 0.01  }

=>  z =  -6.40

4 0
2 years ago
Any number that can be expressed as a ratio of two integers is called
LUCKY_DIMON [66]
The answer is a Rational Number
8 0
3 years ago
9. Stephanie gets her hair cut every 42 days. Her sister goes to the
Fiesta28 [93]

Answer:

Yes

408 days

Step-by-step explanation:

The LCM is 408

= 408 days

5 0
3 years ago
84% of what is 147?
levacccp [35]

Answer:

175.

Step-by-step explanation:

In this question, translate the words into the symbols. "84" is 84, "%" is 1/100, "what" is x, the unknown, "of" is *, "is" is =, and "175" is 175. Therefore the words can be translated into an equation given below:

84 * x / 100 = 147

84x = 14700

x = 175.

Therefore, 84% of 175 is 147!!!

5 0
3 years ago
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