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2 years ago

Solving Quardratic Equation x^3 + 5x^2 -16x - 80 = 0

Mathematics

1 answer:

Cloud [144]2 years ago

4 0

This is not a quadratic equation.
It is a cubic equation.
X1 = 4
X2 = -5
X3 = -4

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ABCD is a square. M is the midpoint of BC and N is the midpoint of CD. A point is selected at random in the square. Calculate th

almond37 [142]

Answer:

1/8 or 0.125

Step-by-step explanation:

Let x be the length of the sides of the square ABCD.

Therefore, the length of CN and CM is x/2.

The area of the triangle MCN is:

$A_t = \frac{0.5x*0.5x}{2}=\frac{x^2}{8}$

The area of the square ABCD is:

$A_s =x*x =x^2$

Thus, the probability that a random point lies in the triangle MCN is:

$P=\frac{A_t}{A_s}=\frac{\frac{x^2}{8}}{x^2}=\frac{1}{8}=0.125$

The probability that the point will lie in the triangle MCN is 1/8 or 0.125.

8 0

2 years ago

25 POINTS!

ludmilkaskok [199]

I would say it is D- (-4,-5), for counterclockwise you turn towards the right. At 180 degrees it would be (4, -5) if you turn again you would get (-4,-5) hope this helps

3 0

3 years ago

1/3=7/21, .. What are the means

gayaneshka [121]

Answer:

Equivelant fractions.

Step-by-step explanation:

Ask your self..

How did the 1/3 become 7/21?

Its very simple multiply 1/3's numerator and denominator by 7

So its going to be.. 1 x 7 = 7

3 x 7 = 21

Therefore, we have 7/21

3 0

1 year ago

HELLLPLPPPPPP PLEASEEEEEEEE!!!!!!!!

svlad2 [7]

Answer:

tell your teacher to help u

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

Solve for 7/2x+7/9x=−17+2/56

kati45 [8]

Answer:

7/2x+7/9x-(-17+25/6)=0

4 0

2 years ago