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3 years ago

HELP QUICK.

Mathematics

2 answers:

Aleks04 [339]3 years ago

7 0

Answer:

Step-by-step explanation:

lakkis [162]3 years ago

5 0

Pretty sure it’s C That one makes the most sense to me please let me know if you get it right

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What is the slope of the line that passes through the points (-4,-2) and (-4,-22)? Write your answer In simplest form

andrew11 [14]

Kwkwwkwkwkwkkejejeje

4 0

4 years ago

I put jericho but it’s wrong so i’m not sure

Ber [7]

<h3>Answer: B) Lake Eyre</h3>

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Explanation:

This is because the value -16 is closest to 0, which represents sea level.

I recommend drawing out a vertical number line. Positive numbers are above 0, to indicate elevations above sea level. Negative numbers represent elevations below sea level.

The diagram is shown below. The diagram is not to scale because the red tickmarks shouldn't be equally spaced out; however, the order is correct, and that's all we need to worry about.

Note how -16 is the highest of the four choices, which makes it the closest to sea level. Also note how as you move further down, the negative values get larger in absolute value. It might be helpful to think of a thermometer.

4 0

3 years ago

Which is the inverse of the function f(x) = x - 9?АО1f-1(x) =x + 9B.f-'(x) = x + 9CO $-+(x) = 9 - *D.F-'-) =-X-9

kirill [66]

To solve for the inverse of the function given;

$f(x)=x-9$

We begin by re-writing the function as follows;

$y=x-9$

To now find the inverse, we interchange y for x, and vice versa, as shown below;

$\begin{gathered} y=x-9 \\ \text{Now becomes;} \\ x=y-9 \end{gathered}$

We now find the value of y;

$\begin{gathered} x=y-9 \\ \text{Add 9 to both sides;} \\ x+9=y-9+9 \\ x+9=y \\ y=x+9 \\ \text{Therefore;} \\ f^{-1}(x)=x+9 \end{gathered}$

ANSWER:

The correct answer is option B;

$f^{-1}(x)=x+9$

8 0

1 year ago

The GCF of 20 and 84

alukav5142 [94]

Answer:

Step-by-step explanation:

4 is the greatest commen factor of 20 and 84

4 x 5 = 20

4 x 21 = 84

7 0

3 years ago

Find the arc length of the given curve between the specified points.

yuradex [85]

Answer:

4.25

Step-by-step explanation:

Given:

$f(x) = \frac{x^3}{12} + \frac{1}{x} \\\\Arc Length = \int\limits^a_b {\sqrt{1 + (f'(x))^2} } \, dx \\f '(x) = \frac{x^2}{6} - \frac{1}{x^2}\\\\f'(x)^2 = (\frac{x^2}{6} - \frac{1}{x^2})^2 = \frac{x^4}{36} + \frac{1}{x^4} - \frac{1}{3}\\\\1 + f'(x)^2 = \frac{x^4}{36} + \frac{1}{x^4} + \frac{2}{3}\\\\\= \frac{x^8 + 36 + 12x^4}{36x^4}\\\\= \frac{(x^4 + 6)^2}{36x^4}\\\\=\sqrt{1 + f'(x)^2} = \sqrt{ \frac{(x^4 + 6)^2}{36x^4}}\\\\= \frac{x^2}{6} + \frac{1}{x^2} \\\\$

$ArcLength = \int\limits^4_1 {\frac{x^2}{6} + \frac{1}{x^2} } \, dx \\= (\frac{x^3}{18} - \frac{1}{x})\limits^4_1\\\\= (\frac{64}{18} - \frac{1}{4}) - (\frac{1}{18} - 1)\\\\= \frac{17}{4}= 4.25$

8 0

3 years ago