Which expression is equivalent to -6(3x- 2/3)?

Mathematics

1 answer:

Anestetic [448]2 years ago

5 0

Answer: −18x+4

Step-by-step explanation:

=(−6)(3x+ −2/3)

=(−6)(3x)+(−6)(

−2/3)

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Find the missing values in the ratio table then right the equivalent ratio

PtichkaEL [24]

10/4= 2.5
5/2.5= 2
2 would be your first answer

32x2.5= 80
80 would be your second answer

Hope this helped

8 0

2 years ago

Read 2 more answers

The authors of a paper describe an experiment to evaluate the effect of using a cell phone on reaction time. Subjects were asked

Serggg [28]

Answer:

a) The 99% confidence interval would be given by (24.409;24.979)

b) n=464

Step-by-step explanation:

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

Part a

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

In order to calculate the critical value $t_{\alpha/2}$ we need to find first the degrees of freedom, given by:

$df=n-1=47-1=46$

Since the Confidence is 0.95 or 95%, the value of $\alpha=0.05$ and $\alpha/2 =0.025$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.025,46)".And we see that $t_{\alpha/2}=2.01$