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3 years ago

Will reward brainliest

Mathematics

1 answer:

Mars2501 [29]3 years ago

7 0

The answer is C because 10/x = tan20° and then just rearrange it so that x = 10/tan20°

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Rounded to the nearest hundredth , what is the positive solution to the quadratic equation 0=2x^2+3x-8

elena-14-01-66 [18.8K]

The positive solution to the quadratic equation $2 x^{2}+3 x-8=0$ is x = 1.39

<h3>Solution:</h3>

Given quadratic equation is $2 x^{2}+3 x-8=0$

The general quadratic equation is of form:

$a x^{2}+b x+c=0$

Now comparing the general equation with the given equation we get

a = 2 , b = 3 and c = -8

The formula to determine roots of the quadratic equation is:

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

On plugging in vlaues, we get

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

$\mathrm{x}=\frac{-3 \pm \sqrt{9-(-64)}}{4}$

On solving we get,

$\begin{array}{l}{\mathrm{x}=\frac{-3 \pm \sqrt{9+64}}{4}} \\\\ {\mathrm{x}=\frac{-3 \pm \sqrt{73}}{4}}\end{array}$

$\mathrm{x}=\frac{-3+\sqrt{73}}{4} \text { OR } \mathrm{x}=\frac{-3-\sqrt{73}}{4}$

x = 1.39 OR x = -2.89

Hence , the positive solution to the quadratic equation is x = 1.39

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4 years ago

What is m% of p% of n? MY LAZY BUTT DON'T WANNA DO THIS

Len [333]

M% of p% of n
m/100 · p/100 · n.

3 0

3 years ago

Xavier drove 88 miles in 1/6 of an hour. If he drove at a constant rate, how far did he travel in one hour?

morpeh [17]

19474772""""""""""""""""

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3 years ago

Read 2 more answers

If g(x)=4x2-16 were shifter 5 units to the right and 2 down, what would the new equation be?

Tatiana [17]

G(x)=4x^2-16

To shift to the right we have to subtract from the value of x, in this case by 5 units...

h(x)=4(x-5)^2-16

h(x)=4(x^2-10x+25)-16

h(x)=4x^2-40x+100-16

h(x)=4x^2-40x+84

Now to shift the function downwards by 2 units we must subtract the constant 2 from h(x)

h(x)=4x^2-40x+84-2

h(x)=4x^2-40x+82

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3 years ago

What is the inverse of y = x² – 36

diamong [38]

Answer:

f^−1(x)=√x+36, −√x+36

Hope this helps! (and I'm sorry if it doesn't)

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3 years ago