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Makovka662 [10]
3 years ago
15

Help me please........

Mathematics
2 answers:
elena-s [515]3 years ago
3 0

Answer:

A

Step-by-step explanation:

By the Pythagorean Theorem, you know that:

2^2+5^2=c^2

Therefore, the correct answer is choice A. Hope this helps!

cricket20 [7]3 years ago
3 0

Answer: choice A

Step-by-step explanation:

Based on the pythagorean theorem which states

a^{2} +b^{2} =c^{2}

c being the hypotenuse

so 2^2+5^2=c^2

and c would equal \sqrt{29}

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there are 2 cups of flour in a batch of pancakes. many is making 3/2 batches . how can many tell if he needs more or fewer than
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Answer: Manny is making 3/2 batches, which is equivalent to 1.5, it's more than one. So, Manny is making more than 1 batch. According to the problem, 2 cups of flour in a batch, if he's making 1.5 batch, he would need 3 cups of flour, which is more than 2 cups of flour.

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3 years ago
A motorist is driving eastbound at the posted maximum speed along a stretch of University Parkway in Baltimore. The probability
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Answer:

0.7

Step-by-step explanation:

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A = the motorist encountered a red light at the 1st intersection

B = the motorist encountered a red light at the 2nd intersection

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P(A) = 0.4

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We want to find P(A|B), the probability that A occurred given that B occurred.

Using Bayes' Theorem we have

P(A|B)=\frac{P(B|A)P(B)}{P(B|A)P(B)+P(B|A^c)P(A^c)}

So,  

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But

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and  

0.2=P(B|A^c)=\frac{P(B\cap A^c)}{P(A^c)}=\frac{P(B\cap A^c)}{0.6}\Rightarrow P(B\cap A^c)=0.12

Since  

(A\cap B)\cap (A\cap B^c)=\emptyset \;and\;(A\cap B)\cup (A\cap B^c)=B

We have

P(B)=P(A\cap B)+P(A\cap B^c)=0.12+0.28=0.4

and finally,

P(A|B)=\frac{0.7P(B)}{0.7P(B)+0.12}=\frac{0.7*0.4}{0.7*0.4+0.12}=\frac{0.28}{0.4}

\boxed{P(A|B)=0.7}

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