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3 years ago

If a and b are independent events then it must be true that P(A|B)=P(A). TRUE OR FALSE.

2 answers:

6 0

This would be true because it shows that p equals either a or b and it also shows that p equals a which is true because it is one of the independent choices.

mr Goodwill [35]3 years ago

3 0

true from apex

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If there are 327 apples and your take 42, how many do you have?

Kryger [21]

I mean, you took 42 so.. 42. but if you're asking how many are left.. then 285

7 0

3 years ago

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I need some help please What's |5| + |–7|?

luda_lava [24]

Answer:

<h3>hello there!</h3>

$\left|5\right|+\left|-7\right|$

$rule =a,\:a\ge 0$

$|5|=5$

$\mathrm{Apply\:absolute\:rule}:\quad \left|-a\right|=a$

$\left|-7\right|=7$

$5+7=$

$12$

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5 0

3 years ago

I really need help! Please, please, PLEASE do not give me a link.

MArishka [77]

Answer:

7 fiction and 23 non- fiction

Step-by-step explanation:

The number of non-fiction read was 5 less than 4 times the number of fiction books.

Assume fiction books are x.

An equation representing this would be:

x + (4x - 5) = 30

5x - 5 = 30

5x = 30 + 5

x = 35 / 5

x = 7 fiction books

Non-fiction books:

= 4x - 5

= 4 * 7 - 5

= 23 non - fiction books

3 0

2 years ago

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which has the greater volume: Prism with a length of 5 inches, a width of 4 inches, and a height of 10, or a prism with a length

GuDViN [60]

Since you have to multiple. L×W×H....

The first one has a volume of 400 and the second has a volume of 400...so both prisms have an equal volume but have a differnet shape

7 0

3 years ago

A 5-meter ladder is leaning against the side of a house. The foot of the ladder is pulled away from the house at a rate of 0.4 m

Flura [38]

<h2>The top of the ladder is descending at 0.3 m/s.</h2>

Step-by-step explanation:

By Pythagoras theorem we know that

Hypotenuse² = Base² + Perpendicular²

h² = b² + p²

We have for ladder

h = 5 m

b = 3 m

5² = 3² + p²

p = 4 m

$\frac{db}{dt}=0.4m/s\\\\\frac{dh}{dt}=0$

Differentiating h² = b² + p² with respect to time

$2h\times \frac{dh}{dt}=2b\times \frac{db}{dt}+2p\times \frac{dp}{dt}\\\\5\times 0=3\times 0.4+4\times \frac{dp}{dt}\\\\\frac{dp}{dt}=-0.3m/s$

The top of the ladder is descending at 0.3 m/s.

3 0

3 years ago