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Oliga [24]
2 years ago
13

Please help me with the answer!! There is the picture of the problem^

Mathematics
2 answers:
nalin [4]2 years ago
7 0

Answer:

6

Step-by-step explanation:

f(x) = √2x-4

f(20) = √2(20)-4

f(20) = √40-4

f(20) = √36

f(20) = 6

Gnoma [55]2 years ago
4 0

Answer:

6

Step-by-step explanation:

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Help with num 9 please. thanks​
Alik [6]

Answer:

See Below.

Step-by-step explanation:

We want to show that the function:

f(x) = e^x - e^{-x}

Increases for all values of <em>x</em>.

A function is increasing whenever its derivative is positive.

So, find the derivative of our function:

\displaystyle f'(x) = \frac{d}{dx}\left[e^x - e^{-x}\right]

Differentiate:

\displaystyle f'(x) = e^x - (-e^{-x})

Simplify:

f'(x) = e^x+e^{-x}

Since eˣ is always greater than zero and e⁻ˣ is also always greater than zero, f'(x) is always positive. Hence, the original function increases for all values of <em>x.</em>

8 0
3 years ago
Write and equation in slope intercept form for the line with the slope 3/5 and y intercept -3
bogdanovich [222]

Answer:

y = 3/5x + (-3)

Step-by-step explanation:

because slope intercept form is y = mx + b

and m = 3/5

and b = -3

so you plug them in to the formula and there's your answer

3 0
3 years ago
These cylinders are similar. Find the volume of
Basile [38]

Answer:

V_s=85\ cm^3

Step-by-step explanation:

Let V_s\ and\ V_b be the volumes of the smaller and bigger cylinder.

The formula for the volume of a cylinder is given by :

V=\pi r^2 h

As the two triangles are similar, the cube of their ratio would equal the ratio of their volume i.e.

\dfrac{V_s}{V_b}=(\dfrac{h_s}{h_b})^3\\\\\dfrac{V_s}{V_b}=(\dfrac{3}{5})^3\\\\\dfrac{V_s}{V_b}=0.216\\\\V_s=393\times 0.216\\\\V_s=84.8\\\\or\\\\V=85\ cm^3

So, the volume of the smaller cylinder is equal to 85\ cm^3.

3 0
3 years ago
How do you solve x to the second power +7x=O
crimeas [40]
Well the answer is 0 because if anything = 0 then it has to be multiplied by 0 so x = 0

8 0
3 years ago
Read 2 more answers
Plz help out I’ll give brainliest :)
saveliy_v [14]

Answer:6,10 I think

Step-by-step explanation:

8 0
3 years ago
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