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2 years ago

If v = -5, what does 4v - 3 equal? (Explain aswell)

Mathematics

2 answers:

Vladimir79 [104]2 years ago

8 0

4(-5) -3= -20-3=-20+3=-17

OleMash [197]2 years ago

6 0

Answer: Answer= -23

Step-by-step explanation: plug in -5 for v. THen multiply 4 and -5 which should give you -20. then subtract -3 from -20 which will give you -23. :)

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Alona [7]

Answer:

The lower limit is 75.04

The upper limit is 78.96

Step-by-step explanation:

From the question we are told that

The sample size is $n = 25$

The sample mean is $\= x = 77$

The standard deviation is $\sigma = 5$

Given that the confidence level is 95% then the level of significance is mathematically represented as

$\alpha = (100 - 95)\%$

$\alpha = 0.05$

The critical value for $\frac{\alpha }{2}$ obtained from the normal distribution table is

$Z_{\frac{\alpha }{2} } = 1.96$

Generally the margin of error is mathematically represented as

$E = Z_{\frac{\alpha }{2} } * \frac{\sigma }{\sqrt{n} }$

=> $E = 1.96* \frac{5 }{\sqrt{25} }$

=> $E = 1.96$

The 95% confidence interval is mathematically represented as

$\= x -E < \mu < \= x +E$

=> $77 - 1.96 < \mu < 77 + 1.96$

=> $75.04 < \mu < 78.96$

7 0

2 years ago

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astraxan [27]

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2 years ago

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djyliett [7]

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Step-by-step explanation:

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3 years ago

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Advocard [28]

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Step-by-step explanation:

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2) 61 is across it so they have the same number

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Step-by-step explanation:

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