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Shkiper50 [21]
3 years ago
10

Please help! I’ll also give brainliest! Thank you!

Mathematics
1 answer:
Rashid [163]3 years ago
3 0

Answer:

VII,V,IV,VI

Step-by-step explanation:

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Write an equation parallel to x - 2y = 4 that passes through the point (-8, 2).
castortr0y [4]

Answer:

y=1/2x+6

Step-by-step explanation:

Change to slope intercept form: y=1/2x-2

Take out the b term

Plug in point (-8, 2)

Get b as 6

Plug in b

Get y=1/2x+6

7 0
3 years ago
In answering on a multiple choice test, a student either know the answer or guesses. Let p be the probability that the students
LenaWriter [7]

Answer:

P(A_{1}|B ) =\frac{mp}{1+p(m-1)}

Step-by-step explanation:

For mutually exclusive events as A1, A2, A3, etc, Bayes' theorem states:

P(A|B)= \frac{P(B|A)P(A)}{P(B)}

P(A|B) is a conditional probability: the likelihood of event A occurring given that B is true.

P(B|A) is a conditional probability: the likelihood of event B occurring given that A is true.

P(A) is the probability that A occurs

P(B) is the probability that B occurs

For this problem:

A1 is the probability that the student knows the answer

A2 is the probability that the student guesses the answer

B is the probability that the student answer correctly

P(A_{1})=p \\P(A_{2})=1-p \\P(B|A_{1})=1 \\P(B|A_{2})=\frac{1}{m} \\P(B)= P(A_{1})P(B|A_{1}) + P(A_{2})P(B|A_{2})= p+\frac{1-p}{m} \\

P(B|A₁) means the probability that the answer is correct when he knew the answer

P(B|A₂) means the probability that the answer is correct when he guessed the answer

P(A₁|B) means the probability that he knew the answer when the answer was correct

Replacing everything in the Bayes' theorem you get:

P(A_{1}|B)= \frac{P(B|A_{1})P(A_{1})}{P(B)}=\frac{(1)(p)}{p+\frac{1-p}{m}} =\frac{mp}{mp+1-p} =\frac{mp}{1+p(m-1)}

5 0
3 years ago
Help I need help on this
zvonat [6]

Answer:

-4

Step-by-step explanation:

-3-9 +8

-12 + 8

= -4

7 0
3 years ago
It is colder than −7 ºF outside. Which inequality represents the temperature t?
bekas [8.4K]

Answer:

-7>t

Step-by-step explanation:

If the temperature is lower than -7 degrees Fahrenheit, then the inequality must show a number less than -7. Or in other words, -7 is greater than what the temperature is, thus the answer is -7>t

3 0
3 years ago
If the front of a playhouse is shown in a scale drawing and the height of the door is 1.8 inches. The scale that maps the drawin
tatyana61 [14]

Answer:

4.5 feet

Step-by-step explanation:

Here, we are concerned with calculating the actual height in feet of the door given the scale used in the maps drawing.

In the scale, scale to actual is 1 inch to 2.5 feet

let 1.8 inch scale = x actual feet

Thus mathematically, by cross multiplying; we have;

x = 2.5 * 1.8 = 4.5 feet

4 0
3 years ago
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