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2 years ago

15

Alexandra is scuba diving. Every 5 minutes an alarm goes off, and she checks her instruments and makes note of her depth. The de

pth readings from her first 20 minutes of diving are shown in the table below.

1 answer:

soldier1979 [14.2K]2 years ago

8 0

There's no table! :) Sorry, I can't help without it!

Thanks!

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Jerome bought 8 packs of baseball cards at a garage sale each pack had 10 cards he give his younger sister 3 cards from each pac

k0ka [10]

He will have 56 cards left. Hope it help!

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3 years ago

Read 2 more answers

A parking lot contains 100 cars , k of which happen to be lemons. we select m of these cars

Sunny_sXe [5.5K]

Given that a parking lot contains 100 cars, k of which happen to be lemons.

This is a conditional probability question.

Let event A be that a car is tested and event B be that a car is lemon.

The probability that a car is lemon is given by $\frac{k}{100}$

The probability that a car is tested is given by $\frac{m}{100}$

The probability that a car is lemon and it is tested is given by $\frac{n}{m}$

For a conditional probability, the probablility of event A given event B is given by:

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

Therefore, the probability that a car is lemon, given that it is tested is given by.

$P(lemon|tested)= \frac{P(lemon\, and\, tested)}{P(tested)} \\ \\ = \frac{ \frac{n}{m} }{ \frac{m}{100} } = \frac{n}{m} \times \frac{100}{m} = \frac{100n}{m^2}$

4 0

3 years ago

Rotate the figure 90 degrees about vertex A.

ziro4ka [17]

Answer:

A' is (1,1) B is (4,1) C is (1,-1)

Step-by-step explanation:

Since we rotating the figure about point a, we know a is the center of the rotation meaning no matter how far we rotate point a new image will stay on where point a pre image was which in this case is (1,1). Also since we know the rules of rotating a angle 90 degrees About the origin we are going to translate the figure to have the one point we are rotating about at the orgin. Since translations are a rigid transformations, the figure will stay the same A. Move the figure 1 to the left and 1 down so A becomes 0,0 B becomes 0,3 and C becomes 2,0. Then apply the rules of 90 degree clockwise rotation rules. (x,y) goes to (y,-x) . A stays (0,0) B becomes (3,0) and C becomes (0,-2). Then translate the figure 1 to the right and 1 down since we rotating about point a which is 1,1 and it at 0,0 rn. A' is 1,1. B' becomes (4,1). C' becomes (1,-1).

5 0

3 years ago

Alenkinab [10]

Option a) is the right answer

7 0

2 years ago

If √6 is the geometric mean between 4 and another number, then the number is

joja [24]

If you have two numbers x, y. The geometric mean is: √xy

For 4 and x. Geometric Mean = √4x and this is equal to √6

   √4x = √6 Square both sides. The square root disappears.

   4x = 6
   x = 6/4 = 3/2 = 1.5

The other number is 1.5.

4 0

2 years ago