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3 years ago

Find XY. ._______._. X Y 7 Z

Mathematics

1 answer:

Rufina [12.5K]3 years ago

6 0

Answer:

hey dude, The formula is (x-y)³=x³-3x²y+3xy²-y³.

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any help would be great

Serjik [45]

H= ymx+b your welcome

5 0

3 years ago

Use the following written description to write the equation for the situation.

elena55 [62]

How I understand it’s 5x+y

7 0

3 years ago

Read 2 more answers

7 copies of the sum of 8 fifths and 4

Agata [3.3K]

Answer:

39 1/5 or 39.2

Step-by-step explanation:

<u>Sum of 8 fifths and 4:</u>

8/5 + 4 =
1 3/5 + 4 =
5 3/5

<u>7 copies of the of sum of 8 fifths and 4:</u>

7 × 5 3/5 =
7( 5 + 3/5) =
35 + 7(3/5) =
35 + 21/5 =
35 + 4 1/5 =
39 1/5 or 39.2

4 0

3 years ago

X^2 + 32x + 256 = 1<br>please show steps

Elena L [17]

$\boxed{x_{1}=-15} \\ \\ \boxed{x_{2}=-17}$

<h2>Explanation:</h2>

In this case, we have the following equation:

$x^2+32x+256=1$

But we can write this equation as:

$x^2+32x+256=1 \\ \\ Subtract \ -1 \ from\ both \ sides: \\ \\ x^2+32x+256-1=1-1 \\ \\ x^2+32x+255=0$

So this final result is a quadratic equation written in Standard Form ( $ax^2+bx+c=0$ ). We need to find the solutions to this equations, so let's use quadratic formula:

$x=\frac{-b \pm \sqrt{b^2-4ac}}{2a} \\ \\ a=1 \\ b=32 \\ c=255 \\ \\ \\ x=\frac{-32 \pm \sqrt{(32)^2-4(1)(255)}}{2(1)} \\ \\ x=\frac{-32 \pm \sqrt{1024-1020}}{2} \\ \\ x=\frac{-32 \pm \sqrt{4}}{2} \\ \\ x=\frac{-32 \pm 2}{2} \\ \\ Finally, \ two \ solutions: \\ \\ \boxed{x_{1}=-15} \\ \\ \boxed{x_{2}=-17}$

<h2>Learn more:</h2>

Quadratic Equations: brainly.com/question/10278062

#LearnWithBrainly

3 0

3 years ago

What is the approximate length of arc s on the circle below? use 3.14 for . round your answer to the nearest tenth. 14.1 in. 22.

Maksim231197 [3]

I FOUND YOUR COMPLETE QUESTION IN OTHER SOURCES.
PLEASE SEE ATTACHED IMAGE.

The length of an arc, by definition is given by:
s = R * theta
Where,
R: radio
theta: angle of the bow.
We then have to replace:
s = (6) * (135 * (pi / 180))
s = 14.1 in
Answer:
The length of the arc s is:
s = 14.1 in

5 0

3 years ago

Read 2 more answers

Find XY. ._________.___. X Y 7 Z

Find XY. ._______._. X Y 7 Z