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saw5 [17]
3 years ago
12

5. Consider the diagram below. Choose the correct statement."

Mathematics
1 answer:
Ivanshal [37]3 years ago
6 0

Answer:

Option (3)

Step-by-step explanation:

Option (1).

AB and SE are coplanar.

Incorrect.

AB lies in a plane ABS and SE lies in another plane SEL.

Option (2).

TS and SE intersect at E.

Incorrect.

They intersect at S.

Option (3).

R intersects K at SB.

Correct.

Since line of intersection of planes R and K is SB

Option (4)

AB and BL are perpendicular at B.

Incorrect.

Angle between them is not 90°.

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What is the missing number ?? /6 =25/30
matrenka [14]

Answer:

5

Step-by-step explanation:

\frac{25}{30} ( divide numerator and denominator by 5 ) , then

\frac{25}{30} = \frac{5}{6} ( with missing number ? = 5 )

8 0
2 years ago
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Suppose a particular type of cancer has a 0.9% incidence rate. Let D be the event that a person has this type of cancer, therefo
natita [175]

Answer:

There is a 12.13% probability that the person actually does have cancer.

Step-by-step explanation:

We have these following probabilities.

A 0.9% probability of a person having cancer

A 99.1% probability of a person not having cancer.

If a person has cancer, she has a 91% probability of being diagnosticated.

If a person does not have cancer, she has a 6% probability of being diagnosticated.

The question can be formulated as the following problem:

What is the probability of B happening, knowing that A has happened.

It can be calculated by the following formula

P = \frac{P(B).P(A/B)}{P(A)}

Where P(B) is the probability of B happening, P(A/B) is the probability of A happening knowing that B happened and P(A) is the probability of A happening.

In this problem we have the following question

What is the probability that the person has cancer, given that she was diagnosticated?

So

P(B) is the probability of the person having cancer, so P(B) = 0.009

P(A/B) is the probability that the person being diagnosticated, given that she has cancer. So P(A/B) = 0.91

P(A) is the probability of the person being diagnosticated. If she has cancer, there is a 91% probability that she was diagnosticard. There is also a 6% probability of a person without cancer being diagnosticated. So

P(A) = 0.009*0.91 + 0.06*0.991 = 0.06765

What is the probability that the person actually does have cancer?

P = \frac{P(B).P(A/B)}{P(A)} = \frac{0.91*0.009}{0.0675} = 0.1213

There is a 12.13% probability that the person actually does have cancer.

3 0
3 years ago
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Troyanec [42]

Answer: look at my work its 10 pi cm ^2

Step-by-step explanation:

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slamgirl [31]

Answer:

the answer is 96

Step-by-step explanation:

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Step-by-step explanation:

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