Help me please !! thank you!

Mathematics

1 answer:

mr Goodwill [35]3 years ago

8 0

This what got , hope it helps

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Solve x2 − 10x = −13.

aev [14]

Answer:

Step-by-step explanation:

First, let's rearrange the given equation into something more recognizable. If we add 13 to both sides, we now have the polynomial $x^{2}-10x+13$ . We can now use the quadratic formula to solve.

Remember that the quadratic formula is

$\frac{-b+/-\sqrt{b^{2}-4ac } }{2a}$

Substitute the numbers from the equation into the formula.

$\frac{-(-10)+/-\sqrt{(-10)^{2}-4(1)(13) } }{2(1)}$

Simplify:

$\frac{10+/-\sqrt{100-52} }{2}$

$\frac{10+/-\sqrt{48} }{2}$

Here, I'm going to assume that there was a mistype in option B because if we divide out the 2 we end up with $5+/-\sqrt{48}$ .

Hope this helps!

6 0

3 years ago

the volume of a cylinder is 75 pie cubic inches. yhe cylinder gas a hight of 3 inches. what is the radius of thr base of the cyl

forsale [732]

I think it is 2,25 I times in the cacutar and got 2.25

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4 years ago

If two functions are inverses of each other, then their composition is

larisa [96]

An identity function

4 0

3 years ago

Bill paid $35.99 in tax on a laptop that cost 499.99. About what percent sales tax did Bill pay?

Leno4ka [110]

let's say it's "x", and we know that x% is really $35.99.

we also know that the laptop cost is $499.99, so that's the 100%.

if 499.99 is the 100%, what is 35.99 off of it in percentage?

$\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} 499.99&100\\ 35.99&x \end{array}\implies \cfrac{499.99}{35.99}=\cfrac{100}{x} \\\\\\ 499.99x=3599\implies x=\cfrac{3599}{499.99}\implies x\approx 7.198$