2 years ago

Solve them please, correct answers will be marked as brainliest & a follow :) thank you x

Mathematics

1 answer:

DaniilM [7]2 years ago

4 0

Answer:

this is the answer that I could do please check it if I could help you

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Is 2 a factor of 84 explain your thinking and use division to ansnwer

irina1246 [14]

Yes because 8 and 4 is an even number

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3 years ago

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Evaluate 7j+5-8k when j=0.5 and k=0.25

dlinn [17]

So first you would substitute j and k in the expression.

7(0.5)+5-8(0.25)

3.5+5-2

It would equal 6.5

Hope this helps!

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2 years ago

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Describe and correct the error in writing the product as a power

Bess [88]

We can't see what you're trying to say.

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3 years ago

A student answers a multiple-choice examination question that offers four possible answers. Suppose the probability that the stu

Nitella [24]

Answer: 0.9730

Step-by-step explanation:

Let A be the event of the answer being correct and B be the event of the knew the answer.

Given: $P(A)=0.9$

$P(A^c)=0.1$

$P(B|A^{C})=0.25$

If it is given that the answer is correct , then the probability that he guess the answer $P(B|A)= 1$

By Bayes theorem , we have

$P(A|B)=\dfrac{P(B|A)P(A)}{P(B|A)P(A)+P(C|A^c)P(A^c)}$

$=\dfrac{(1)(0.9)}{(1))(0.9)+(0.25)(0.1)}\\\\=0.972972972973\approx0.9730$

Hence, the student correctly answers a question, the probability that the student really knew the correct answer is 0.9730.

7 0

3 years ago

How many solutions does the following system of equations have y=2x+2 & 2y=4x+4

iren [92.7K]

Answer:

y=2x + 2

0= 2x +2

-2x = 2

x= -1

Step-by-step explanation:

2y = 4x +4

2y -4x =4

y-2x =2

-2x +y =2

2x-y=-2

3 0

2 years ago

Solve them please, correct answers will be marked as brainliest & a follow :) thank you x​

Solve them please, correct answers will be marked as brainliest & a follow :) thank you x