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nadezda [96]
3 years ago
14

Simplify root 32-6 divided by root 2 plus root 2​

Mathematics
2 answers:
babymother [125]3 years ago
8 0

Answer:

\frac{ \sqrt{32} - 6 }{ \sqrt{2}  +  \sqrt{2} }  \\  \frac{ \sqrt{16 \times 2}  - 6}{2 \sqrt{2} }  \\  \frac{4 \sqrt{2}  - 6}{2 \sqrt{2} }  \\  \frac{2(2 \sqrt{2} - 3) }{2 \sqrt{2} }  \\  \frac{2 \sqrt{2}  - 3}{ \sqrt{2} }  \\ thnk \: you

Alex777 [14]3 years ago
7 0

Answer:

5•362165924

Step-by-step explanation:

first make root of 32-6=5•099019514

then make root of 2+root2=1•84--

then divide upper by lower part answer comes

or

root32-6=root26

root 2+root 2=2root2

root26/root2root2

ans=3•0318---

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The average fuel efficiency of U.S. light vehicles for 2005 was 21 mpg. If the standard deviation of the population was 2.9 and
statuscvo [17]

Answer:

1) The probability that the mean mpg for a random sample of 25 light vehicles is 0.042341.

2) between 20 and 25 --> 21-25/2.9 = -1.38

Step-by-step explanation:

Problem #1:

  • Using the z-score formula, z = (x-μ)/σ/n, where x is the raw score = 20 mpg,μ is the population mean = 21 mpg , σ is the population standard deviation = 2.9, n = random number of samples.
<h3><u>X < 20</u></h3>
  • = z = 20 - 21/2.9/√25
  • = z = -1/2.9/5
  • = z = -1.72414
<h2><u><em>Now</em></u></h2>

<em>P-value from Z-Table:</em>

<h3><u>P(x<20) = 0.042341</u></h3>

Problem #2:

<h3>21-25/2.9 = -1.38</h3>
6 0
2 years ago
PLSSSSSS HELPPPP......Which equation can be used to find the unknown length, b, in this triangle?
castortr0y [4]
Its A. the side lengths squared equal the hypotenuse squared.
6 0
3 years ago
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Suppose a marketing company wants to determine the current proportion of customers who click on ads on their smartphones. It was
andrezito [222]

Answer:

The 92% confidence interval for the true proportion of customers who click on ads on their smartphones is (0.3336, 0.5064).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

For this problem, we have that:

n = 100, p = 0.42

92% confidence level

So \alpha = 0.08, z is the value of Z that has a pvalue of 1 - \frac{0.08}{2} = 0.96, so Z = 1.75.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.42 - 1.75\sqrt{\frac{0.42*0.58}{100}} = 0.3336

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.42 - 1.75\sqrt{\frac{0.42*0.58}{100}} = 0.5064

The 92% confidence interval for the true proportion of customers who click on ads on their smartphones is (0.3336, 0.5064).

4 0
4 years ago
Two physics questions for 80 points! + Brainliest answer :)
Vikki [24]

Answer: Option A

Explanation: The lights that is incident on a mirror will be reflected back as it is a smooth surface and it reflects back the light.

the light will be reflected by the same angle as it was incidented. The angle of incidence can be defined as the angle by which the light ray falls on the surface of the mirror.

The angle by which the light reflects back is known as the angle of reflection. Being a smooth surface light ray is reflected back.

7 0
4 years ago
You have $28.49. You spend $14.95 at a bowling alley. You win $35.00 for setting the record score for your age group. How much m
Firdavs [7]

Answer:

48.54‬

Step-by-step explanation:

You start of with 28.49, you spend (<em>Subtract</em>) 14.95, which gives us 13.54

In the bowling alley you win 35 dollars more, so you <em>add</em>, ( 13.54 + 35.00 = 48.54‬)

6 0
3 years ago
Read 2 more answers
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