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tangare [24]
3 years ago
11

WILL GIVE BRAINLIEST!!!!!

Mathematics
1 answer:
Sladkaya [172]3 years ago
3 0

\text{Consider the function}\\
\\
f(x)=\sqrt{7+x}\\
\\
\text{Since it is a radical function, so the term inside the radical must be positive}\\
\\
\text{so to find the domain of the function, we will solve the inequality,}\\
\\
7+x\geq 0\\
\\
\Rightarrow x\geq -7\\
\\
\text{hence the domain of the function is all real number greater than }x=-7.\\
\\
\text{or the domain of the function is:}\\
\\
x\geq -7

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Jared he’s reading a 300 page book he borrowed from the library so far he has read 85 pages he has far more days to read the boo
Agata [3.3K]

Answer:

3.5

Step-by-step explanation:

300÷85=3.529

so it would take him approximately 3.5 more days before he finishes the book

5 0
3 years ago
X + 5y = 28<br><br> 2x + 3y = 21
svp [43]

Answer: for first one  x=28-5y

second one x=-3/29(y-7)

Step-by-step explanation:

im sure its right

4 0
2 years ago
Suppose that replacement times for washing machines are normally distributed with a mean of 9.4 years and a standard deviation o
Nezavi [6.7K]

Using the normal distribution, it is found that the replacement time that separates the top 18% from the bottom 82% is of 11.23 years.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean \mu and standard deviation \sigma is given by:

Z = \frac{X - \mu}{\sigma}

  • The z-score measures how many standard deviations the measure is above or below the mean.
  • Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

In this problem, the mean and the standard deviation are, respectively, given by \mu = 9.4, \sigma = 2.

The desired value is the 82nd percentile, which is X when Z = 0.915, hence:

Z = \frac{X - \mu}{\sigma}

0.915 = \frac{X - 9.4}{2}

X - 9.4 = 0.915(2)

X = 11.23

The replacement time that separates the top 18% from the bottom 82% is of 11.23 years.

More can be learned about the normal distribution at brainly.com/question/24663213

6 0
1 year ago
What is the slope of the line passing through the points (2,-5) and (4,1)
k0ka [10]

Slope is the rise/run of the line. With the rise being how far apart the two points are on the y axis, and the run being how far apart the two points are on the x axis.

In this case, the first point is 6 units down from the other and 4 units over from it. (6/4) then from there you would simplify your fraction. (Both numerator and denominator can be divided by 2).


Your slope in total is 3/2. Hope this helped.

7 0
3 years ago
A baker uses a coffee mug with a diameter of 8cm to cut out circular cookies from a big sheet of cookie dough.
zubka84 [21]

Answer:

The forumula for finding area of the circle is  \pi r^2.

Step-by-step explanation:

Let's find the radius of the mug:

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Now, we can to express the area of each cookie in terms of pi:

Area= \pi *4^2=16\pi

8 0
3 years ago
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