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snow_lady [41]
3 years ago
10

The probability of drawing two white cards without replacement is 14/95, and the probability of drawing one white card is 2/5. W

hat is the probability of drawing a second white card, given that the first card is white?
a. 52/95
b. 7/19
c. 7/38
d. 28/475
Mathematics
2 answers:
Ray Of Light [21]3 years ago
7 0

Answer:  

answer is b. 7/19

Step-by-step explanation:

A: event of drawing first white card

P(A)= 2/5

B/A: event of drawing second white card given first white card has been drawn

we have to find P(B/A)

A∩B: event of drawing two white cards without replacement

P(A∩B)=14/95

baye's theorem says that

P(A∩B)=P(A)×P(B/A)

14/95=P(B/A)×2/5

⇒P(B/A)=7/19

hence,<u> answer is b. 7/19</u>

<u />

lesya [120]3 years ago
6 0
A would be the answer

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39. Rewrite each expression as an equivalent expression containing only one logarithm.
monitta

Answer:

ln{\frac{(p+q)^3}{q^2p^7} }

Step-by-step explanation:

3 ln(p + q) − 2 ln(q) − 7 ln(p)

=ln(p+q)^3- ln(q)^2-ln(p)^7

= ln(p+q)^3-{ln(q)^2+ln(p)^7}

=ln(p+q)^3-ln(q)^2*(p)^7

=ln{ (p+q)^3÷(q)^2*(p)^7}

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3 0
3 years ago
15. Which statement explains why 30 is considered an irrational number?
Strike441 [17]

Consider the given number is \sqrt{30} in question as well as in options.

Given:

\sqrt{30} is considered as an irrational number.

To find:

The reason for given statement.

Solution:

We have,

\sqrt{30}=5.47722557505...

When evaluated, \sqrt{30} results in a nonterminating (infinite digits after decimal) and nonrepeating decimal, which  is considered an irrational number.

Therefore, the correct option is C.

6 0
4 years ago
The actual length of a machine is 12.25cm , the measured length 12.2cm find the Absolute error .
NeX [460]

Answer:

Absolute error is 0.05 cm.

Step-by-step explanation:

Given:

Actual length = 12.25 cm

Measured length = 12.2 cm

We need to find Absolute error.

Solution:

Now we can say that;

Absolute error is equal to measured length minus Actual actual.

framing in equation form we get;

Absolute error = |Measured\ length - Actual\ length|= |12.2-12.25| = |-0.05|

Hence Absolute error is 0.05 cm.

6 0
4 years ago
Solve for x <br> 1 = − 4 + x
Firlakuza [10]

Answer: x = 5


Step-by-step explanation:

1 = -4 + x

We have to isolate x, and remember, what we do to one side we do to the other.

1 + 4 = -4 + 4 + x

5 = x

Check:

-4 + 5 = 1

1=1

5 0
4 years ago
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