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2 years ago

Compound Probability

Mathematics

2 answers:

Sauron [17]2 years ago

8 0

Answer:

9/7is the chance of coming red ball

Rus_ich [418]2 years ago

8 0

Answer:

the answer to your question is 9/7 chances are there for the red marbles

hope this helps

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In the adjoining figure, AB//CD. Show that, AC//BD.

anastassius [24]

Answer:

discupa eu não sei

um belo dia abençoado

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2 years ago

Substitute the values for a, b, and c into b2 – 4ac to determine the discriminant. Which quadratic equations will have two real

hoa [83]

Answer: $0=2x^2-7x-9\\0=4x^2-3x-1\\0=x^2-2x-8$

Step-by-step explanation:

We know that the standard quadratic equation is ax^2+bx+c=0

Let's compare all the given equation to it and , find discriminant.

1. a=2, b= -7, c=-9

$b^2-4ac=(-7)^2-4(2)(-9)=49+72>0$

So it has 2 real number solutions.

2. a=1, b=-4, c=4

$b^2-4ac=(-4)^2-4(1)(4)=16-16=0$

So it has only 1 real number solution.

3. a=4, b=-3, c=-1

$b^2-4ac=(-3)^2-4(4)(-1)=9+16=25>0$

So it has 2 real number solutions.

4. a=1, b=-2, c=-8

$b^2-4ac=(-2)^2-4(1)(-8)=4+32=36>0$

So it has 2 real number solutions.

5. a=3, b=5, c=3

$b^2-4ac=(5)^2-4(3)(3)=25-36=-9$

Thus it does not has real solutions.

5 0

3 years ago

Read 2 more answers

What does the "O" stand for in the S.T.O.P. method of refusal?

natima [27]

B.offer another idea hope i helped :)

3 0

3 years ago

~this is 8th grade~There were 325 competitors signed up for the pie eating contest. On the day of the big

MissTica

Answer:

Step-by-step explanation:

You just do 370-325

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2 years ago

The sum of two is 138. One number is 20 less than the other find the numbers

IceJOKER [234]

Answer:

59 and 79

Step-by-step explanation:

59+79=138

59 is 20 less than 79 so it works

8 0

3 years ago