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3 years ago

Solve the quadratic equation for x.What is one of the roots?

Mathematics

2 answers:

ExtremeBDS [4]3 years ago

8 0

Answer:

-13

Step-by-step explanation:

plug in each number for x, then follow orders of operations

(-13+6)^2

-7^2=49

(-6+6)^2

0^2=0

(-7+6)^2

-1^2=1

(-1+6)^2

5^2=25

zubka84 [21]3 years ago

7 0

-13 because 6 x 2 = 12 plus x = -13 x represents 1 btw

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Step-by-step explanation:

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3 years ago

For each day in New England, the probability that it is mostly cloudy is 0.10 . Cindi is planning to go leaf watching, and her f

kolbaska11 [484]

Answer:

0,37

Step-by-step explanation:

It will be easier if we noun the events.

A= Cindi's friend comes to England.

B= New England is mostly cloudly.

We are searching the probability of just A doesn´t happen or just A happens but not B.

The probability of A doesn´t happen is one minus the probability of A:

$=(A^{|} )=1-P(A)=1-0.7=0.3$

The events A and B are independent for this reason the probability than both occurs is the product of the probability of each event. It means:

$P(A \cap B)= P(A)P(B)=0.1*0.7=0.07$

The probability of A doesn´t happen or A and B happen is:

$P(A^{|} \cup (A \cap B))= P(A^{|} )+P (A \cap B)-P(A^{|} \cap A\cap B)=0.3+0.07-0=0.37$

Conclusively we have to rest the probability of A doesn´t happen and A and B happen, but A happens and doesn´t happen and the same time is impossible. For this reason, we have the same result.

$P(A^{|} \cup (A \cap B))-P(A^{|} \cap A\cap B)=0.37-0=0.38$

Then the probability either Cindi's friend does not come to New England, or she does come but it is mostly cloudy is 0.37

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2 years ago