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VladimirAG [237]
2 years ago
10

Ax+by+c=0 solve for y

Mathematics
1 answer:
kvv77 [185]2 years ago
8 0

Answer: \large\boxed{y=\frac{-ax}{b} -\frac{c}{b}}

Step-by-step explanation:

ax+by+c=0\\ax+by=-c\\by=-ax-c\\y=\frac{-ax-c}{b}\\y=\frac{-ax}{b} -\frac{c}{b}

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A literature professor decides to give a 10-questiontrue-false quiz to determine who has read an as-signed novel. She wants to c
Darya [45]

Answer:

The teacher should set the score 7 as the lowest passing grade.

Step-by-step explanation:

Let <em>X</em> = number of correct guesses.

All the questions are of true-false format.

The probability of getting a correct answer is, <em>p</em> = 0.50.

The total number of questions is, <em>n</em> = 10.

The random variable <em>X</em> follows a Binomial distribution with parameters <em>n</em> = 10 and <em>p </em>= 0.50.

The probability mass function of <em>X</em> is:

P(X=x)={10\chose x}0.50^{x}(1-0.50)^{10-x};\ x=0,1,2,3...

Now the teaches chose the grading scheme such that the probability of passing a student who guesses on every question is less than 0.05.

Then the probability of failing such a students is at least 1 - 0.05 = 0.95.

Compute the probability distribution of <em>X</em>.

Consider the probability distribution attached below.

The value of <em>x</em> for which P (X ≤ x) is at least 0.95 is, <em>x</em> = 7.

So the teacher should set the score 7 as the lowest passing grade.

7 0
3 years ago
What is the equation of the line that passes through the point (−3,−11) and is parallel to the line with the equation y=2x−4
tester [92]

parallel means same slope.  m = 2

y - y₁ = m(x - x₁)

y - (-11)= 2(x - (-3))

y + 11 = 2(x + 3)

y + 11 = 2x + 6

<u>   -11  </u>  <u>       -11  </u>

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Answer: A

5 0
3 years ago
This one is confusing (slope)
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The answer is positive 1/5. Here is a tip, when reading a graph read from left to right. If it is going up to the right it is positive. If it goes down going to the right it is negative. Also think rise/run. Count how many times it goes up(or down) then count how long the line goes.

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4/9+4(x-1)=28/9-(x-7x)+1
kobusy [5.1K]
X= -23/6 or x= -3.83
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3 years ago
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AnnyKZ [126]
The answer should be 1546.3 after its worked out.
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