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3 years ago

14

-3(1 – 3x) + 2x

1 answer:

e-lub [12.9K]3 years ago

3 0

Answer:

it is -3+11x

Step-by-step explanation:

just look at your notes or take some

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What is the zero in the quadratic function f(x)= 9x^2-54x-19?

Alex17521 [72]

Answer:

6.33... and 0.333...

Step-by-step explanation:

The quadratic formula is

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

It is important because while some quadratics are factorable and can be solved not all are. The formula will solve all quadratic equations and can also give both real and imaginary solutions. Using the formula will require less work than finding the factors if factorable. We will substitute a=9, b=-54 and c=-19.

$x=\frac{-b+/-\sqrt{b^2-4ac} }{2a}\\x=\frac{-(-54)+/-\sqrt{(-54)^2-4(9)(-19)} }{2(9)}\\x=\frac{54+/-\sqrt{2916+684} }{18}$

We will now solve for the plus and the minus.

The plus,,,

$x=\frac{54+\sqrt{3600}}{18}\\x=\frac{54+60}{18}\\x=\frac{114}{18}\\x=6.3$

and the minus...

$x=\frac{54-\sqrt{3600}}{18}\\x=\frac{54-60}{18}\\x=\frac{-6}{18}\\x=-0.333...$

8 0

3 years ago

7 divided into 2 what's the answer

Alex17521 [72]

3.5 hope this helps C:

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What is the value of (5^3)^1=? without any exponents.

hodyreva [135]

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Step-by-step explanation:

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Find the slope of the line.

ladessa [460]

Lets take any two points on the line . I took (-2,-2) and (0,-3)
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3 years ago

I dont get how to do this so i was wondering if someone could explain to me

QveST [7]

Answer:

The are vertical angles.

Step-by-step explanation:

So as you can see in my picture i drew those lines, they are vertically opposite from each other.

Hope this helps!

Good Luck!

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