3 years ago

38b/-19 please help me

1 answer:

7 0

You didn't write what to do with the fraction but I think you meant to ask to simplify it:
38b/-19
Multiply - 19 from top and bottom :
-2b

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Kaylis [27]

Because 10 divided by 6 equals 6 tenths not 6 hundredths

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2 years ago

sergiy2304 [10]

Answer:

95% Confidence interval: (39.43, 61.58)

Step-by-step explanation:

We are given the following in the question:

Sample mean, $\bar{x}$ = $50.50

Sample size, n = 15

Alpha, α = 0.05

Sample standard deviation = 20

95% Confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 14 and}~\alpha_{0.05} = \pm 2.1447$

$=50.50 \pm 2.1447(\dfrac{20}{\sqrt{15}} ) \\\\= 50.50 \pm 11.0751 \\= (39.4249,61.5751)\\\approx (39.43, 61.58)$

95% Confidence interval: (39.43, 61.58)

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2 years ago

allochka39001 [22]

I believe the answer is C and F.

Hope this helps!

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2 years ago

pantera1 [17]

Your picture kinda crops the answer :((

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2 years ago

strojnjashka [21]

Answer:

What do you mean work a 45-45-90 degree angle... could you provide a picture of what you need to learn.

Step-by-step explanation:

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2 years ago