2 years ago

Find BC. Round the answer to the nearest tenth. A. 1.1 B. 1.9 C. 2.3 D. 2.8

Mathematics

1 answer:

Katyanochek1 [597]2 years ago

4 0

Answer:

A:1.1 I had the same answer

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*I thought of a number, added 18, then multiplied the result by 8. I got 16. What was my number?

Arte-miy333 [17]

Answer:

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Step-by-step explanation:

Represent the number by n.

Then:

8(n + 18) = 16

Performing the indicated multiplication, we get:

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4 years ago

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Find the missing probability. P(A) = 0.4; P(B) = 0.7; P(A or B) ; P(A and B) = 0.3

solong [7]

Given:

$P(A)=0.4, P(B)=0.7, P(A\text{ and }B)=0.3$

To find:

The value of $P(A\text{ or }B)$ .

Solution:

We know that,

$P(A\text{ and }B)=P(A\cap B)$

$P(A\text{ or }B)=P(A\cup B)$

It means, we have $P(A)=0.4, P(B)=0.7, P(A\cap B)=0.3$ and we need to find the value of $P(A\cup B)$ .

$P(A\cup B)=P(A)+P(B)-P(A\cap B)$

$P(A\cup B)=0.4+0.7-0.3$

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$P(A\cup B)=0.8$

Therefore, the value of $P(A\text{ or }B)$ is 0.8.

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3 years ago