if 30% of all students who enter a certain university drop out during or at hte end of their first year, what is the probability that more than 600 of this year's entering class of 1800 will drop out during or at the end of their first year?

Answers

Answer 1

Answer: the probability is zero percent. 30% of 1800 is 486, and since that number was exact and the final number was less than 600, it is statistically impossible.

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y = (x − 1)2
y = (x − 1)2 + 1
y = (x + 1)2 − 1
y = (x + 1)2

Answers

Correct answer is D.

Graph passes through the point (-1, 0).
Therefore, x = -1 and y = 0.

$y=(x+1)^2\n0=(-1+1)^2\n0=0^2\n0=0 \;\; \text{T}$

This is the only equation which is true for x = -1 and y = 0.
Therefore, the solution is $y=(x+1)^2$

Answer:

y = (x + 1)^2

Step-by-step explanation:

I used desmos and put each answer choice into the graphing calculator and answer choice D was the only one that matched with the image in the question.

The sum of two prime numbers is 85. what is the product of these two prime numbers

Answers

$2 +83 =85 \n \n 2 * 83 = \boxed {\bf {166}}$

(8^3)^4 ⋅ 8^−9/ 8^3
Answer???

Answers

Answer: 1

Step-by-step explanation:

David rowed a boat upstream for three miles and then returned to point he started from. The entire journey took four hours. The speed of the stream is one mile per hour. Find David's speed in still water. (Hint: speed = distance ÷ time, upstream speed = speed of the boat – speed of the stream, and downstream speed = speed of the boat + speed of the stream) David's speed in still water is ____ miles per hour.

Answers

To solve for the time it takes to travel a certain distance at a certain speed, use the formula,
time = distance / speed

Given that the entire journey takes four hours, add up the time it takes David to row upstream with that of him travelling downstream. This is mathematically represented as,

total time = time upstream + time downstream

4 = 3/(x - 1) + 3/(x +1)

Solving for x in the equation gives 2. Thus, David's speed in still water is 2 miles per hour.

a total of 408 tickets were sold for the school play. They were either adult tickets or student tickets. The number of students so the number of tickets sold three times the number of adult tickets sold

Answers

GivenSituation:
=> There are 408 total of ticket sold for a school play
=> 3 times of the tickets are sold to students compare to the adults
=> So the ratio of the given situation is 1 : 3
=> Now, 1 + 3 = 4
Since, we need 4 parts, let’s divide 408 by 4
=> 408 / 4 = 102 – the number of tickets for adults
=> 102 x 3 = 306 – the number of tickets for students
=> 102 : 306

A right rectangular prism has base dimensions of 3 inches by 12 inches. An oblique rectangular prism has base dimensions of 4 inches by 9 inches.If the prisms are the same height, how do their volumes compare?

The volumes are equal, because the bases are congruent.
The volumes are equal, because the heights are equal and the horizontal cross-sectional areas at every level are also equal.
The volumes are not equal, because their horizontal cross-sectional areas are not the same at every level.

Answers

Answer:

The correct option is 2.

Step-by-step explanation:

Given information: Height of both prism are same.

Right rectangular prism has base dimensions of 3 inches by 12 inches.

Volume of a right rectangular prism:

$V=Bh$

where, B is base area and h is height of the prism.

The volume of right rectangular prism is

$V=(3* 12)* h=36h$

Therefore the volume of right rectangular prism is 36h cubic inches.

An oblique rectangular prism has base dimensions of 4 inches by 9 inches.

Volume of a oblique rectangular prism:

$V=Bh$

where, B is base area and h is height of the prism.

The volume of right rectangular prism is

$V=(4* 9)* h=36h$

Therefore the volume of oblique rectangular prism is 36h cubic inches.

The volumes are equal, because the heights are equal and the horizontal cross-sectional areas at every level are also equal.

Option 2 is correct .

The volumes are equal, because the heights are equal and the horizontal cross-sectional areas at every level are also equal.

How to find the volume of the prism?

The formula for the Volume of a right rectangular prism is:

V = B * h

where,

B is base area.

h is height of the prism.

Thus:

V = 3 * 12 * h

V = 36h

Similarly, the volume of the oblique rectangle is:

V = Bh

V = 4 * 9 * h

V = 36h

Thus, we can see that the volumes are equal, because the heights are equal and the horizontal cross-sectional areas at every level are also equal.

Read more about Volume of Prism at: brainly.com/question/23766958

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