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2 years ago

If the subjective probability that it will rain is 45%, what is the probability that it will not rain

Mathematics

1 answer:

vovikov84 [41]2 years ago

7 0

Answer:

There is a 55% chance that it won't rain.

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Line g passes through points (5, 9) and (3, 2). Line h passes through points (9, 10) and (2, 12). Are line g and line h parallel

icang [17]

For this case we find the slopes of each of the lines:

The g line passes through the following points:

$(x_ {1}, y_ {1}) :( 3,2)\\(x_ {2}, y_ {2}) :( 5,9)$

So, the slope is:

$m = \frac {y_ {2} -y_ {1}} {x_ {2} -x_ {1}} = \frac {9-2} {5-3} = \frac {7} {2}$

Line h passes through the following points:

$(x_ {1}, y_ {1}) :( 9,10)\\(x_ {2}, y_ {2}) :( 2,12)$

So, the slope is:

$m = \frac {y_ {2} -y_ {1}}{x_ {2} -x_ {1}} = \frac {12-10} {2-9} = \frac {2} {- 7} = - \frac {2} {7}$

By definition, if two lines are parallel then their slopes are equal. If the lines are perpendicular then the product of their slopes is -1.

It is observed that lines g and h are not parallel. We verify if they are perpendicular:

$\frac {7} {2} * - \frac {2} {7} = \frac {-14} {14} = - 1$

Thus, the lines are perpendicular.

Answer:

The lines are perpendicular.

8 0

2 years ago

PLS HELP!! A student randomly guesses the answers to two true-false questions. Describe and correct the error in finding the pro

Nitella [24]

Answer:

The student was wrong. The probability is actually 1/4.

Step-by-step explanation:

Let's say you have question A and question B. You could have incorrect on A, and incorrect on B. Or, you could have incorrect on A, but a correct on B. Or, you could have an incorrect on B, but a correct on A. Or, both could be correct. <em><u>Since there are 4 different possibilities, the actual probability is 1/4.</u></em>

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2 years ago

I need your help ASAP!

slega [8]

Answer:

Step-by-step explanation:

If 4ab+k=13 then k=13-4ab

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2 years ago

In the figure below. AB is a diameter of circle P.

valentinak56 [21]

Answer: on khan academy answer: 221

Step-by-step explanation:

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2 years ago

If you knew that f(-4)=8, then what (x,y) coordinate point must lie on the graph of y=f(x?)

nika2105 [10]

Answer:

(-4,8)

Step-by-step explanation:

so f(-4)=8 this is easy

the -4 is the x

beause f(x)=y

so the 8 is the y

when y is f(-4)=8 then the cordinate points are (-4,8)

7 0

3 years ago