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lukranit [14]
2 years ago
15

9/20 divided by -3/5 Find the quotient.

Mathematics
2 answers:
Taya2010 [7]2 years ago
8 0

Answer:

Negative 3 over 4

Step-by-step explanation:

hodyreva [135]2 years ago
6 0
-3/4 i think

............
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Let A and B be events with =PA0.7, =PB0.3, and =PA or B0.9. (a) Compute PA and B. (b) Are A and B mutually exclusive? Explain. (
kvasek [131]

Answer:

a) P(A \cup B) = P(A) +P(B) - P(A\cap B)

And if we solve for P(A \cap B) we got:

P(A \cap B) = P(A) + P(B) -P(A\cup B)= 0.7+0.3-0.9 = 0.1

b) False

The reason is because we don't satisfy the following relationship:

P(A\cup B) = P(A) + P(B)

We have that:

0.9 \neq 0.3+0.7 =1

c) False

In order to satisfy independence we need to have the following condition:

P(A \cap B) = P(A) *P(B)

And for this case we don't satisfy this relation since:

0.1 \neq 0.7*0.3 = 0.21

Step-by-step explanation:

For this case we have the following probabilities given:

P(A) = 0.7, P(B) =0.7, P(A \cup B) =0.9

Part a

We want to calculate the following probability: P(A \cap B)

And we can use the total probability rule given by:

P(A \cup B) = P(A) +P(B) - P(A\cap B)

And if we solve for P(A \cap B) we got:

P(A \cap B) = P(A) + P(B) -P(A\cup B)= 0.7+0.3-0.9 = 0.1

Part b

False

The reason is because we don't satisfy the following relationship:

P(A\cup B) = P(A) + P(B)

We have that:

0.9 \neq 0.3+0.7 =1

Part c

False

In order to satisfy independence we need to have the following condition:

P(A \cap B) = P(A) *P(B)

And for this case we don't satisfy this relation since:

0.1 \neq 0.7*0.3 = 0.21

4 0
3 years ago
HELP PLEASE!!!! <br> WILL GIVE BRAINLIEST <br> ANY LINKS OR WRONG ANSWERS WILL BE REPORTED!!!!
jarptica [38.1K]

Answer:

The numerator is 70.

Step-by-step explanation:

70% converts to the fraction of 70/100. Therefore, the numerator is 70.

Hope you have a great day,

Ginny

3 0
2 years ago
Read 2 more answers
16+1008=<br><br> 56+20<br><br> please help me
kicyunya [14]
16+1008 = 1024

56+20=76
7 0
2 years ago
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What error did zacharias make?
qwelly [4]
The equation 0 = -2x2 5x - 3 was the quadratic formula that Zacharias used. However, he started substituting as:
Quadratic formula as x = ; substitution as x

The errors he made: he mistakenly used the negative (-) and postive (+)
      * -5 should have been 5
      * 52 should have been -52
      * both the numerator and the denominator  should have been -2 instead        of 2
7 0
3 years ago
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ZABD and ZDBC are supplementary angles.
stellarik [79]

Answer:

Measure?

Step-by-step explanation:

Could u like explains more pls?

5 0
3 years ago
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