Ask question

Ask question

All categories

3 years ago

8

]HELP ILL GIVE 15 POINTS!!!!!!!!!!!!!!!!

1 answer:

IrinaVladis [17]3 years ago

5 0

Answer:

8

Step-by-step explanation:

You might be interested in

The probability that a random student at Elmville College is a freshman is 0.3; a sophomore, 0.25; and a junior or senior, 0.45.

Andre45 [30]

Let $L_1$ denote the event that a student is a freshman, $L_2$ a sophomore, $L_3$ a junior, and $L_4$ a senior.

Let $E$ denote the event that a student majors in engineering. By the law of total probability,

$\mathbb P(E)=\mathbb P(E\cap L_1)+\mathbb P(E\cap L_2)+\mathbb P(E\cap L_3)+\mathbb P(E\cap L_4)$

By the definition of conditional probability, we can expand each of these intersection probabilities to get

$\mathbb P(E)=\mathbb P(E\mid L_1)\mathbb P(L_1)+\mathbb P(E\mid L_2)\mathbb P(L_2)+\mathbb P(E\mid L_3)\mathbb P(L_3)+\mathbb P(E\mid L_4)\mathbb P(L_4)$

$\mathbb P(E)=0.15\cdot0.3+0.2\cdot0.25+2(0.3\cdot0.45)=0.365$

8 0

3 years ago

What is the full form of ASAP.

ikadub [295]

Answer:

As soon as possible

Step-by-step explanation:

The abbreviation of As soon as possible is ASAP.

7 0

4 years ago

Read 2 more answers

15- the square root of 105 and 5

Marina86 [1]

Answer:9.75304923404

Step-by-step explanation:

3 0

3 years ago

Answer the question on the attachment

Nonamiya [84]

Answer:

The answer to your question is below

Step-by-step explanation:

Part A.

-3x + 7y = 13

Solve the equation for "y"

7y = 3x + 13

y = $\frac{3}{7} x + 13$

Part B.

Two lines are parallel if their slopes are the same

Two lines are perpendicular if their slope are opposite reciprocals

Slope of the first line = $\frac{3}{7}$

Slope of the second line = $\frac{3}{7}$

Conclusion: the lines are parallel because their slopes are the same.

5 0

3 years ago

What are the coordinates of the point on the directed line segment from (-9, -1)(−9,−1) to (-9, -10)(−9,−10) that partitions the

mihalych1998 [28]

Answer:

Therefore the co-ordinate of the point on the line segment from (-9,-1) to(-9,-10) into a ratio internally is (-9,-7).

Therefore the co-ordinate of the point on the line segment from (-9,-1) to(-9,-10) into a ratio internally is (-9,-19).

Step-by-step explanation:

Given points are (-9,-1) and (-9,-10)

If a point divides the line segment by joining two points (x₁,y₁) and (x₂,y₂) into a ratio m:n internally.

Then the point of the coordinate is $(\frac{m.x_2+nx_1}{m+n},\frac{my_2+ny_1}{m+n})$ .

If a line segment is externally divided into a point by joining two points (x₁,y₁) and (x₂,y₂) with m: n ratio.

Then the point of the coordinate is $(\frac{m.x_2-nx_1}{m-n},\frac{my_2-ny_1}{m-n})$ .

Internally

The co-ordinate of the point is $(\frac{(-9)\times2+(-9)\times 1}{2+1},\frac{(-10)\times 2+(-1)\times 1}{2+1})$

$=(-9,-7)$

Externally

The co-ordinate of the point is $(\frac{(-9)\times2-(-9)\times 1}{2-1},\frac{(-10)\times 2-(-1)\times 1}{2-1})$

= (-9,-19)

6 0

3 years ago