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3 years ago

Math is my answer correct?? pls check!

Mathematics

2 answers:

Luba_88 [7]3 years ago

6 0

Answer:

Domain: (-2 , 3]

Range: [-3, 2)

Step-by-step explanation:

Domain is all the x's on the graph. (If you have an equation, then it's all the numbers that are allowed to be x)

Range is all the y's on the graph (or if you have an equation, all the possible y outcomes)

Open dot endpoint means that point is not included in the set (domain and range are sets of numbers) Closed dot means the point is included.

You didn't get this math question right. But look for all the x's for the domain, and all the y's for the range.

DIA [1.3K]3 years ago

6 0

Use graphing calculator if needed I suggest so yeah. Hope you got help

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Write the linearization of the function at the points indicated. (Enter your answer as an equation. Let x be the independent var

Natalija [7]

Answer:

$\displaystyle y=5+\frac{x}{10}$

$\displaystyle y=10+\frac{(x-75)}{20}$

Step-by-step explanation:

Linearization

It consists of finding an approximately linear function that behaves as close as possible to the original function near a specific point.

Let y=f(x) a real function and (a,f(a)) the point near which we want to find a linear approximation of f. If f'(x) exists in x=a, then the equation for the linearization of f is

$y=f(x)=f(a)+f'(a)(x-a)$

Let's find the linearization for the function

$y=\sqrt{25+x}$

at (0,5) and (75,10)

Computing f'(x)

$\displaystyle f'(x)=\frac{1}{2\sqrt{25+x}}$

At x=0:

$\displaystyle f'(0)=\frac{1}{2\sqrt{25+0}}=\frac{1}{10}$

We find f(0)

$f(0)=\sqrt{25+0}=5$

Thus the linearization is

$\displaystyle y=f(0)+f'(0)(x-0)=5+\frac{1}{10}x$

$\displaystyle y=5+\frac{x}{10}$

Now at x=75:

$\displaystyle f'(75)=\frac{1}{2\sqrt{25+75}}=\frac{1}{20}$

We find f(75)

$f(75)=\sqrt{25+75}=10$

Thus the linearization is

$\displaystyle y=f(75)+f'(75)(x-75)=10+\frac{1}{20}(x-75)$

$\displaystyle y=10+\frac{(x-75)}{20}$

5 0

3 years ago

5 + 2n2 when n = 3. (The 2 after the n is an exponent)

Pani-rosa [81]

Answer:

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

This is used for the next few questions: The rating for the new scary movie has a scale of 0 to 10. The average response was tha

boyakko [2]

Answer:

The percentage that of people who gave the movie a rating between 6.8 and 8.8

P(6.8≤X≤8.8) = 83.9≅ 84 percentage

Step-by-step explanation:

Step(i):-

Mean of the Population = 8.3 points

Standard deviation of the Population = 0.5 points

Let 'X' be the random variable in normal distribution

Let X = 6.8

$Z = \frac{x-mean}{S.D} = \frac{6.8-8.3}{0.5} = -3$

Let X = 8.8

$Z = \frac{x-mean}{S.D} = \frac{8.8-8.3}{0.5} = 1$

The probability that of people who gave the movie a rating between 6.8 and 8.8

P(6.8≤X≤8.8) = P(-3≤Z≤1)

= P(Z≤1)- P(Z≤-3)

= 0.5 + A(1) - ( 0.5 -A(-3))

= A(1) + A(3) (∵A(-3)=A(3)

= 0.3413 +0.4986 (∵ From Normal table)

= 0.8399

Conclusion:-

The percentage that of people who gave the movie a rating between 6.8 and 8.8

P(6.8≤X≤8.8) = 83.9≅ 84 percentage

6 0

4 years ago

A bacteria colony on an area of 500 cm^2 has a population density of 2,500 bacteria/cm^2? Find the bacteria population in the ar

dexar [7]

Answer:

$\large \boxed{\text{A. 1 250 000 bacteria }}$

Step-by-step explanation:

$\text{Population} = \text{500 cm}^{2} \times\dfrac{\text{ 2500 bacteria}}{\text{1 cm}^{2}} = \text{1 250 000 bacteria}\\\\\text{The population is $\large \boxed{\textbf{1 250 000 bacteria }}$}$

6 0

3 years ago

On the average, a human body has around 4 x 1013 red blood cells. What is this number in standard form?

STALIN [3.7K]

Answer:

$4.052*10^{4}$

Step-by-step explanation:

Let me know if you want the full explanation. Brainliest please ❤!

4 0

4 years ago