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3 years ago

In the picture is de question

Mathematics

1 answer:

valentina_108 [34]3 years ago

8 0

2+(x+4)= ?
So it really is: 2+1(x+4)=0
You distribute the 1 to the x+4
2+ 1x +4= 0
Combine like terms
1x+ 6=0
Subtract six on both sides
1x=-6
Divide by 1 on both sides
x=-6

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In some sparsely populated areas of the United States, the speed limit on highways can be as high as 80 miles per hour (mph).

Andrew [12]

$(B)\:\:35.8\:\text{m/s}$

Step-by-step explanation:

$80\:\dfrac{\text{mi}}{\text{hr}}×\left(\dfrac{1609\:\text{m}}{1\:\text{mi}}\right)×\left(\dfrac{1\:\text{hr}}{3600\:\text{s}}\right)$

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3 years ago

An oil exploration company currently has two active projects, one in Asia and the other in Europe. Let A be the event that the A

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Answer:

0.7 ; 0.65 ; 0.115

Step-by-step explanation:

P(A) = 0.5 ; P(B) = 0.3

P(not successful) = P(B') = 1 - 0.3 = 0.7 ; P(A') = 1 - 0.5 = 0.5

1.)

Both events are independent events, hence the outcome of one does not depend on the other. That is the failure of the Asian project has nothing to do with the European project.

Probability that European project isn't successful;

P(B') = 1 - P(B) = 1 - 0.3 = 0.7

2.)

Probability that atleast one of the 2 projects is successful :

P(AUB) = P(A) + P(B) - P(AnB)

P(AnB) = P(A) * P(B) = 0.5 * 0.3 = 0.15

P(AUB) = 0.5 + 0.3 - 0.15 = 0.65

3.)

Probability that only the Asian project is successful, given that atleast one of the two projects is successful :

[P(A) - P(AnB)] ÷ P(AuB)

[0.5 * 0.15] ÷ 0.65

= 0.075 ÷ 0.65

= 0.1153846

= 0.115

6 0

3 years ago

If the polynomial 6x6 – 4x5 + 9x – 6 is to be factored by grouping, which step should be taken?

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I think you're trying to say 6x^6-4x^5+9x-6. ^ Is a symbol that means the number after it is an exponent.
First step, find the gcf (greatest common factor) between the first two parts. The gcf of 6x^6-4x^5 is 2x^5.
Now take it out. You get
2x^5(3x-2)
If you expand that equation, you will get 6x^6-4x^5 which is why you know it's correct.
Now do the same for the second half.
The gcf for the second two parts is 3.
3(3x-2)
Notice anything? Yep, in both of them, after you take out the gcf, you get (3x-2)
Now, you combine them into one equation
2x^5(3x-2)+3(3x-2)
Then you do this
(2x^5+3)(3x-2)
That's your factored form.

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3 years ago

A listing posted by a restaurant chain gives, for each of the sandwiches it sells, the types of fillings for the sandwiches, num

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Answer:

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Conditional Proba

Step-by-step explanation: there is the answer

key

5 0

3 years ago