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2 years ago

8. You find the probability P(A or B) by using the equation PA or B) = P(A) + P(B) - P(A and B).

Mathematics

1 answer:

iragen [17]2 years ago

7 0

Step-by-step explanation:

When you add P(A) and P(B), the overlap P(A and B) is counted twice. So you must subtract it to get the probability P(A or B).

If A and B are disjoint, then P(A and B) = 0, so it isn't necessary to subtract.

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What are the total amount of choices possible if an individual is to create a 4 digit password using the digits 0 through 9 incl

Serga [27]

Answer:

10000 options

Step-by-step explanation:

There are 10 options of digit from 0 to 9. It means there are 10 options for the first slot, 10 for the 2nd slot, 10 for the 3rd slot, and 10 for the last slot of each of the 4 slots of the password. For all 4 passwords the total amount of choices would be

$10 * 10 * 10 * 10 = 10^4 = 10000 options ranging from 0000 to 9999$

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3 years ago

48 students are girls they make up 60% of the class how many students total

qwelly [4]

For this you would do
$48 \div .60$
Because 60% is the same as 0.60. And solving a problem like this is the opposite of finding a percent of a number. When you solve this you get 80. So there are 80 students in total.

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3 years ago

M is the midpoint of RS and R has coordinates (2,5 M has coordinates (6,9) find the coordinates of S

zhuklara [117]

Answer:

what are the answer choices

Step-by-step explanation:

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2 years ago

Read 2 more answers

In the parallelogram shown in the picture solve for Z

deff fn [24]

In a parallelogram, opposite angles are congruent.

Since angles z and 124° are opposite angles in the parallelogram, they are congruent angles.

Therefore we have:

$z=124°$

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9 months ago

Alex stayed up 20 a week How many hours did Alex stay up in 12 weeks?

Simora [160]

Answer:

240 hours

Step-by-step explanation:

1 week = 20 hours

12 weeks = 20 × 12

= 240 hours

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2 years ago