1 year ago

State the value of 'x' in this equation, and explain why you know this to be true without doing any calculations.

Mathematics

1 answer:

Kaylis [27]1 year ago

4 0

Answer:

x=9

a^b = a^c

then b=c

so in this case x=9

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The highway fuel economy of a 2016 Lexus RX 350 FWD 6-cylinder 3.5-L automatic 5-speed using premium fuel is a normally distribu

Elodia [21]

Answer:

a) Standard error = 0.5

b) 99% Confidence interval: (19.2125,21.7875)

Step-by-step explanation:

We are given the following in the question:

Population mean = 20.50 mpg

Sample standard deviation = 3.00 mpg

Sample size , n = 36

Standard Error =

$=\displaystyle\frac{\sigma}{\sqrt{n}} = \frac{3}{\sqrt{36}} = 0.5$

99% Confidence interval:

$\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}$

Putting the values, we get,

$z_{critical}\text{ at}~\alpha_{0.01} = \pm 2.575$

$20.50 \pm 2.575(\displaystyle\frac{3}{\sqrt{36}})= 20.50 \pm 1.2875 = (19.2125,21.7875)$

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2 years ago

Please help me out ASAP

sesenic [268]

Answer:

$26^9$

Step-by-step explanation:

$26^1 *26 ^8\\=26^{1+8} \\=26^{9}$

8 0

2 years ago

Mr. Hedde requires 60% to pass. If someone gets 160 points and falls short by 20

olganol [36]

Answer:

300 points

Step-by-step explanation:

160 + 20 = 180

180 would have been 60 percent

180/60 = 300

300 would have been needed to pass

Proven by:

300 * 60% = 180

180 - 20 = 160

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2 years ago

Question 4 of 15

melisa1 [442]

“C” Os the correct answer

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2 years ago

Im serious this time! This on is the last one!

Virty [35]

42. they’re across from each other

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3 years ago

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