3 years ago

The graphs of the quadratic function y= 2x^2and the exponential function y= 2^x are shown below.

Mathematics

1 answer:

11111nata11111 [884]3 years ago

7 0

Answer:

Step-by-step explanation:

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If x^2=20 what is the value of x will give brainliest for answer

Schach [20]

Answer:

x² - 20 = 0

Using the quadratic formula

$x = \frac{ - b± \sqrt{( {b})^{2} - 4ac } }{2a}$

a = 1 b = 0 c = -20

So we have

$x = \frac{ - 0 ± \sqrt{ {0}^{2} - 4(1)( -20)} }{2(1)} \\ \\ x = \frac{± \sqrt{80} }{2} \\ \\ x = \frac{±4 \sqrt{5} }{2} \\ \\ \\ x = ±2 \sqrt{5} \\ \\ \\ x = 2 \sqrt{5} \: \: \: or \: \: \: x = - 2 \sqrt{5}$

Hope this helps you.

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3 years ago

Find the equation of the tangent line to the graph of f(a) = sec(a) at the point (0, 1).

Paladinen [302]

Let the required equation be y = mx + c; where y = 1, m = f'(0), x = 0
f(a) = sec(a)
f'(a) = sec(a)tan(a)
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y = mx + c
1 = 0(0) + c
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Therefore, required equation is
y = 1.

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3 years ago

Plzzzz help will give brainliest needs to be done my 11:30 plzz will fail in not answered by that time

navik [9.2K]

(c/ b * 0) is just (c/0) and you cannot divide by 0

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In a computer program, distance due south from a point is treated as negative, and distance due north from a point is treated as

aleksandrvk [35]

The correct answer is -78.15 m.

Hope this helped! :)

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3 years ago