3 years ago

Help please :(!!!!!!!!!!

Mathematics

1 answer:

AleksAgata [21]3 years ago

4 0

Answer:

with

???????

Step-by-step explanation:

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The variable y varies directly with the variable x.

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D answer to dis question is 21

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Julio says, "if you subtract 14 from my number amd multiply the difference by -6, the results is -72." What is julios number

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Find the missing factor. Write your answer in<br> exponential form.<br> 9^-6= (?) • 9^-2

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Answer:

9^-4

Step-by-step explanation:

9^-6=?*9^-2

Let the unknown=x

9^-6=x*9^-2

9^-6=9^-2(x)

x=1/9^6÷1/9^2

=1/9^6×9^2/1

=9^2/9^6

x=1/9^4

x=9^-4

Check

9^-4*9^-2

=9^-4-2

=9^-6

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3 years ago

Solve each problem by using the quadratic formula. Write solutions in simplest radical form. 2x2 – 2x – 1 = 0

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When you have a quadratic in the form ax² + bx + c = 0, you can solve for x using the quadratic formula, which is as follows:
$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$
In this case, a = 2, b = -2, and c = -1. Let's plug these in.
$x=\frac{-(-2)\pm\sqrt{(-2)^2-4(2)(-1)}{2(2)}$
Simplify...
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$x=\frac{2\pmsqrt{12}}4$

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$x=\frac{2\pm2\sqrt{3}}4$

$x=\frac{1\pm\sqrt{3}}2$

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