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Alex_Xolod [135]
3 years ago
5

What is the probability of an event that is certain?

Mathematics
1 answer:
horrorfan [7]3 years ago
4 0

Answer:

1

Step-by-step explanation:

An event that is certain to happen has a probability of 1.

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-7(sqrt(11)+sqrt(5))/6


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3 years ago
One number is larger than another by 9. If the greater number is increased by 10, and the lesser number is tripled, the sum of t
kkurt [141]

Answer:

The larger number is -6, the smaller number is -15

Step-by-step explanation:

We have two numbers, a and b.

We know that one number is larger than another by 9.

Then we can write:

a = b + 9

then a is larger than b by 9 units.

If the greater number is increased by 10 (a + 10) and the lesser number is tripled (3*b), the sum of the two would be -41:

(a + 10) + 3*b = -41

So we got two equations:

a = b + 9

(a + 10) + 3*b = -41

This is a system of equations.

One way to solve this is first isolate one variable in one of the two equations:

But we can see that the variable "a" is already isolated in the first equation, so we have:

a = b + 9

now we can replace that in the other equation:

(a + 10) + 3*b = -41

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now we can solve this for b.

9 + b + 10 + 3b = -41

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19 + 4b = -41

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a = b + 9

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2 years ago
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Klio2033 [76]
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3 0
3 years ago
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