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3 years ago

14

The equation P=4s represents the perimeter P of a square with side length s. What is the perimeter of a square with a side lengt

h of 5ft ?
The perimeter is.

1 answer:

PilotLPTM [1.2K]3 years ago

6 0

Answer:

20 feet

Step-by-step explanation:

s= side

P= 4s

I our case, s is 4, so 4*5 is 20.

Hence,

P=20

Hope this helps!

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a student either knows the answer or guesses. Let 3434 be the probability that he knows the answer and 1414 be the probability t

Arlecino [84]

Answer: $\dfrac{12}{13}$

Step-by-step explanation:

Let A = he known the answer then A' = he guess the answer.

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As per given , we have

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By Bayes theorem , we have

$P(A|B)=\dfrac{P(B|A)P(A)}{P(B|A)P(A)+P(B|A')P(A')}\\\\ P(A|B)=\dfrac{1\times\dfrac{3}{4}}{1\times\dfrac{3}{4}+\dfrac{1}{4}\times\dfrac{1}{4}}\\\\= \dfrac{12}{13}$

The probability that the student knows the answer given that he answered it correctly is $\dfrac{12}{13}$ .

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horrorfan [7]

<span>Z=15+2(x+y)
Use distributive property
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Subtract 2y from both sides
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Subtract 15 from both sides
Z - 2y - 15= 2x
Divide 2 on both sides
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