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Tresset [83]
3 years ago
5

Please help! Very Easy Question! Which of the following are rational numbers?

Mathematics
1 answer:
nata0808 [166]3 years ago
5 0

Answer:

20.25

Step-by-step explanation:

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Plz help will be marked BRAINLIEST and thanks <br><br> Jwhdbendhdbe
morpeh [17]

Answer:

BDC 37°

CDE 143°

FDE 37°

FDA 90°

with a hope, this helps you!

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2 years ago
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Jane can make a handcrafted dream catcher in 6 days. Zena makes the same dream catcher in 4 days. If they work together making d
finlep [7]

Answer:36

Step-by-step explanation:

I actually just answered this problem on a website the answer is 36.

4 0
3 years ago
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Christine has always been weak in mathematics. Based on her performance prior to the final exam in Calculus, there is a 51% chan
Charra [1.4K]

Answer:

a) 0.3270 = 32.70% probability that Christine fails the course

b) 0.3917 = 39.17% probability that she had found someone to help

Step-by-step explanation:

We have these following probabilities:

61% probability that Christine find a coach.

100 - 61 = 39% probability that Christine does not find a coach.

With a coach, a 21% probability of failing.

Without a coach, a 51% probability of failing.

a. What is the probability that Christine fails the course?

21% of 61%(finds a tutor) plus 51% of 39%(does not find a tutor). So

P = 0.21*0.61 + 0.51*0.39 = 0.327.

0.327 = 32.7% probability that Christine fails the course

b. Christine ends up failing the course. What is the probability that she had found someone to help?

This can be formulated by the Bayes formula:

P(B|A) = \frac{P(B)*P(A|B)}{P(A)}

In which P(B|A) is the probability of B happening given that A happened and P(A|B) is the probability of A happening given that B happened.

In this question.

P(B|A) is the probability of finding a tutor given that she failed.

P(B) is the probability of finding a tutor. So P(B) = 0.61.

P(A|B) is the probability of failing when finding a tutor. So P(A|B) = 0.21

P(A) is the probability of failing. So P(A) = 0.327.

So

P(B|A) = \frac{P(B)*P(A|B)}{P(A)} = \frac{0.61*0.21}{0.327} = 0.3917

0.3917 = 39.17% probability that she had found someone to help

4 0
3 years ago
Which Trig. Function do you use to find X?
zvonat [6]

Answer:

Cosine

Step-by-step explanation:

Cosine = \frac{adjacent}{hypothenuse}

Cos 70 = \frac{x}{8}

0.633 = \frac{x}{8}

0.633 x 8 = \frac{x}{8} x 8

5.064 = x

7 0
3 years ago
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9.647 • 10 to the 7 power
DIA [1.3K]

Answer:

96470000


Step-by-step explanation:

Exact Form:

9.647 ⋅ 10^7

6 0
3 years ago
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