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4 years ago

5 times 10^8 - 3 times 10^6=? In scientific notation

Mathematics

1 answer:

Dafna11 [192]4 years ago

5 0

Answer:

4.99999985 × 10 x14

Step-by-step explanation:

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A survey of 400 non-fatal accidents revealed that 268 involved a distracted driver using some kind of electronic device. Constru

Misha Larkins [42]

A 95% confidence interval for the proportion of non-fatal accidents involving a distracted driver using some kind of electronic device is 62.5%<x<71.61%

The 95% confidence interval for the proportion is expressed according to the formula;

$CI=p\pm z\sqrt{\frac{p(1-p)}{n} }$

p is the proportion = 268/400 = 0.67

z is the 95% z-score = 1.96

n is the sample space = 400

Substitute the given parameters into the formula to have:

$CI=0.67\pm 1.96\sqrt{\frac{0.67(1-0.67)}{400} }\\CI=0.67\pm 1.96\sqrt{\frac{0.67(0.33)}{400} }\\CI=0.67\pm 1.96(0.0235)\\CI=0.67 \pm 0.0461\\CI=(0.67-0.0461, 0.67+0.0461)\\CI=(0.624, 0.7161)\\CI = (62.4 \%, 71.61 \%)$

Hence a 95% confidence interval for the proportion of non-fatal accidents involving a distracted driver using some kind of electronic device is 62.5%<x<71.61%

Learn more on confidence interval here: brainly.com/question/17212516

5 0

3 years ago

A store sold a case of scented candles for $17.85 that had been marked up 110%. What was the original price?

cestrela7 [59]

Let the letter o represent the original price.

17.85 = o + (o*1.10)
17.85 = 2.10 * o
o = 17.85/2.10=8.5
The original price was $8.50

6 0

3 years ago

Read 2 more answers

Help! Find the domain of the graph

MatroZZZ [7]

Answer:

[-3,9]

Step-by-step explanation:

you look at the x axis

3 0

3 years ago

Perform the addition.<br> (3x² + 3x - 5) + (-7x² + 9)

lakkis [162]

The question is asking us to find the sum. To do this, let's first write the original equation and then take it from there.
$(3 x^{2} + 3x - 5) + (-7 x^{2} + 9)$ <span>
Use distributive property:
</span> $3 x^{2} + 3x - 5 - 7 x^{2} + 9$
Combine Like Terms:
$
-4 x^{2} +3x+4$
Therefore, the answer to your question is -4x² + 3x + 4. Hope this helps and have a fantastic day!

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3 years ago

Units and graphs <br> (1.03)

goldfiish [28.3K]

is this for flvs??? hahah anyways the answers i believe the third one???

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3 years ago