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yKpoI14uk [10]
3 years ago
12

Bryan hiked 8.48x 105 feet last summer. There are approximately 5.3x 10 feet in

Mathematics
1 answer:
marin [14]3 years ago
4 0

Answer: the number of miles that Bryan hiked is 160

Step-by-step explanation:

Total distance that Bryan hiked last summer was 8.48x 10^5 feet.

There are approximately 5.3 x 10^3 feet in a mile. Converting 8.48 × 10^5 feet to miles, it becomes

8.48 × 10^5/5.3 x 10^3

Applying the rules of indices which is expressed as

a^x ÷ a^y = a^(x - y)

It becomes

= 1.6 × 10^ (5 - 3)

= 1.6 × 10^2

= 160 miles

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13.60 See the note below.

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This is just the reverse of the question you just did. This time you are trying to solve for c

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3 years ago
How do I find these equations using substitution y=-3x+5 and 5x-4y=-3 ?
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Step-by-step explanation:

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    The population standard deviation is  \sigma  = \$ 16

     The level of significance is  \alpha  = 0.05

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The null hypothesis is  H_o :  \mu = 108.50

The alternative hypothesis is  H_a  :  \mu \ne  108.50

Generally the test statistics is mathematically represented as

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=>    z = \frac{112 - 108.50 }{ \frac{ 16}{\sqrt{64} } }  

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From the z table  the area under the normal curve to the left corresponding to  1.75  is  

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=>     p-value = 2 * 0.040059

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From the values obtained we see that  p-value  > \alpha hence

The decision rule is  

Fail to reject the null hypothesis

The conclusion is  

There is no sufficient evidence to show that the average room price is significantly different from $108.50

 

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