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4 years ago

URGENT. I DO NOT UNDERSTAND: PLEASES LEAVE AN EXPLANATION

Mathematics

1 answer:

Mandarinka [93]4 years ago

7 0

Answer:

Step-by-step explanation:

To find out area of a triangle you must use this formula; Area=1/2bh

In other words, Area equals half times base times height. Since we know that the base is 5/6, fill that in. You can do the rest on your own, (:

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Subtract -7a^2 + 3a -9 from 5a^2 - 6a -4<br><br> Answer should be polynomial in standard form

lara [203]

5a^2 - 6a -4 - (<span>-7a^2 + 3a -9)
=</span>5a^2 - 6a -4 + 7a^2 - 3a + 9
=12a^2 - 9a + 5

answer
12a^2 - 9a + 5

6 0

3 years ago

So I have 4 math problems, whether you choose to answer them or not is your choice. Also thank you if you do answer them. :)

cestrela7 [59]

Answer:

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Step-by-step explanation:

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3 years ago

Assume you are planning a picnic for lunch, but when you woke up there were rain clouds in the sky. If 50% of rainy days start w

Tasya [4]

Answer:

0.25 = 25% probability that it will rain today and ruin your picnic

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

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

In which

P(B|A) is the probability of event B happening, given that A happened.

$P(A \cap B)$ is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Cloudy skies

Event B: Rain

20% of all days start with clouds in the air

This means that $P(A) = 0.2$

50% of rainy days start with rain clouds in the air

50% of 10%. So

$P(A \cap B) = 0.5*0.1 = 0.05$

What is the probability that it will rain today and ruin your picnic

$P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.05}{0.2} = 0.25$

0.25 = 25% probability that it will rain today and ruin your picnic

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3 years ago

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Lady_Fox [76]

Answer: A = 5

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3 years ago

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