4 years ago

Choose the correct simplification of(5x+7y)(4x-6y)

Mathematics

1 answer:

zmey [24]4 years ago

5 0

20x2 - 30y + 28xy - 42y2

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Eddie & Leopold ran several simulations trying to determine the probability of drawing a red beans from a bag of black white

NARA [144]

Answer:

yes they did

good job

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3 years ago

What are the value too<br> F(-3)=<br> F(-1)=<br> F(3)=

bagirrra123 [75]

Answer:

f(-3)=-2,5

f(-1)=-1,5

f(3)=¾

3 0

2 years ago

Mr. Raysor bought crayons and markers for his school. He bought 5 times as many crayons as markers.He bought 30 boxes a total of

adoni [48]

X=markers

5x= crayons

5x+x= 30

6x=30

X=5

5 markers. 25 crayons

7 0

3 years ago

P(x) = x3 - 2x2 + 2x<br> What are the real and complex zeros of the equation

vesna_86 [32]

Given:

The polynomial is

$p(x)=x^3-2x^2+2x$

To find:

The real and complex zeros of the equation.

Solution:

We have,

$p(x)=x^3-2x^2+2x$

For zeros, p(x)=0.

$x^3-2x^2+2x=0$

$x(x^2-2x+2)=0$

$x=0\text{ and }x^2-2x+2=0$

The real value of x is 0. The equation $x^2-2x+2=0$ will give complex roots. Here, a=1, b=-2 and c=2.

Using quadratic formula, we get

$x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}$

$x=\dfrac{-(-2)\pm \sqrt{(-2)^2-4(1)(2)}}{2(1)}$

$x=\dfrac{2\pm \sqrt{4-8}}{2}$

$x=\dfrac{2\pm \sqrt{-4}}{2}$

On further simplification, we get

$x=\dfrac{2\pm \sqrt{-1}\sqrt{4}}{2}$

$x=\dfrac{2\pm 2i}{2}$

$x=\dfrac{2(1\pm i)}{2}$

$x=1\pm i$

Therefore, the real zero is 0 and the complex zeros are 1+i and 1-i.

5 0

3 years ago

PLEASE HELP!

dmitriy555 [2]

Y = 3x - 1

The slope is 3, y goes up 3 for every increase in x
The intercept point of the Y axis is -1

5 0

3 years ago