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3 years ago

Solve for all values of x by factoring. x^2- 3x = 4x

Mathematics

2 answers:

sveticcg [70]3 years ago

8 0

Answer:

x=0 or x=7

Step-by-step explanation:

x^2-3x=4x

Subtract 4x from each side. x^2-7x=0

Factor the left side of the equation. x(x-7)=0

Set factors equal to zero. x=0 or x-7=0

x=0 or x=7

Alona [7]3 years ago

6 0

Answer: x=0,7

Step-by-step explanation:

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3 years ago

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Answer:

$P( A \cap B) = P(A) *P(B) = 0.34*0.32 = 0.1088$

And then replacing in the total probability formula we got:

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And rounded we got $P(A \cup B ) = 0.551$

That represent the probability that it rains over the weekend (either Saturday or Sunday)

Step-by-step explanation:

We can define the following notaton for the events:

A = It rains over the Saturday

B = It rains over the Sunday

We have the probabilities for these two events given:

$P(A) = 0.34 , P(B) = 0.32$

And we are interested on the probability that it rains over the weekend (either Saturday or Sunday), so we want to find this probability:

$P(A \cup B)$

And for this case we can use the total probability rule given by:

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

And since we are assuming the events independent we can find the probability of intersection like this:

$P( A \cap B) = P(A) *P(B) = 0.34*0.32 = 0.1088$

And then replacing in the total probability formula we got:

$P(A \cup B) = 0.34+0.32 - 0.1088 = 0.5512$

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3 years ago

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3 years ago