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In-s [12.5K]
3 years ago
14

Conditional probability. please help! ​

Mathematics
1 answer:
worty [1.4K]3 years ago
7 0

Answer:

a. 0.06

b. 0.2

Step-by-step explanation:

a. P(B given A) = P(A and B) / P(A)

0.1 = P(A and B) / 0.6

P(A and B) = 0.06

b. P(A given B) = P(A and B) / P(B)

P(A given B) = 0.06 / 0.3

P(A given B) = 0.2

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4 0
3 years ago
Which are the solutions of x2 = –11x + 4?
Zarrin [17]

For this case we have the following polynomial:

x ^ 2 = -11x + 4

Rewriting the polynomial we have:

x ^ 2 + 11x - 4 = 0

From here, we can solve the polynomial using the quadratic equation

We have then:

x=\frac{-b+/-\sqrt{b^2-4ac}}{2a}

x=\frac{-11+/-\sqrt{11^2-4(1)(-4)}}{2(1)}

x=\frac{-11+/-\sqrt{11^2+16}}{2}

x=\frac{-11+/-\sqrt{121+16}}{2}

x=\frac{-11+/-\sqrt{137}}{2}

Therefore, the solutions are:

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5 0
4 years ago
Read 2 more answers
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5 0
4 years ago
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N/4 &lt; -1 on a number line<br> -10x&gt;-100 on a number line <br> 5x&gt;20 on a number line
blsea [12.9K]
N/4 < -1 — we can multiply both sides with 4, so we dont have to deal with fractions.

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So, our N goes left from -4 on a number line.

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X is rightwards from 4.


4 0
3 years ago
3) The _ _ _ _ _ _ number system is known as the decimal systemand uses 10 digits (0, 1, 2, 3, 4, 5, 6, 7, 8, 9) to show all num
oksano4ka [1.4K]

Answer:

The Base-10 system.

Step-by-step explanation:

our everyday number system is a Base-10 system. • the Base-10 number system is known as the decimal system. and has 10 digits to show all numbers. 0,1,2,3,4,5,6,7,8,9. using place value and a decimal point to separate.

4 0
4 years ago
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