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2 years ago

A good will do one of both of which two things select two answers

Mathematics

1 answer:

goldfiish [28.3K]2 years ago

3 0

WUT?
MARK ME BRAINLEST

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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

Need help with 15... thx

Rzqust [24]

8 x 1.25 = 10
10 x 10 = 100

3 0

3 years ago

Read 2 more answers

!!!URGENT!!! Read Image Below.

KIM [24]

Answer:

$x = \frac{6 \pm \sqrt{(-6)^2 - 4(3)(8)}}{2(3)}$

Step-by-step explanation:

Given the equation, $3x^2 - 6x + 8 = 0$ , the quadratic formula for solving this equation is given as:

$x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$

Where,

a = 3

b = -6

c = 8

Plug in the above values into the quadratic formula.

$x = \frac{-(-6) \pm \sqrt{(-6)^2 - 4(3)(8)}}{2(3)}$

$x = \frac{6 \pm \sqrt{(-6)^2 - 4(3)(8)}}{2(3)}$

4 0

3 years ago

Three pounds of lawn seed covers 1800 square feet. How many 4 pound bags are needed to cover 8400 square feet?

Jobisdone [24]

3.5 or 4 if you can only get 4 pound bags. Hope this helps!

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3 years ago

A triangle has a leg of 11 cm, and a hypotenuse of 17 cm, what is the length of the other leg

Vera_Pavlovna [14]

The answer to this question is 12.1695 because a^2+b^2=c^2

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3 years ago

Read 2 more answers