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3 years ago

The meal cost$ 54.65 and they want to leave they waiter a 20% how much should the tip be

Mathematics

1 answer:

SSSSS [86.1K]3 years ago

4 0

Answer:

10.93

Step-by-step explanation

54.65 x 0.20 = 10.93

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3 years ago

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2 years ago

The table represents the balance of Fernando’s loan, y, over a period several months, x. He used technology to create the scatte

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2 years ago

The weights of adobe bricks used for construction are normally distributed with a mean of 3 pounds and a standard deviation of 0

dedylja [7]

Answer: a) 0.8413, b) 0.9987.

Step-by-step explanation:

Since we have given that

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Standard deviation = 0.25 pounds

n = 28 bricks

So, (a) What is the probability that all the bricks in the sample exceed 2.75 pounds?

$P(X>2.75)\\\\=P(z>\dfrac{2.75-3}{0.25}\\\\=P(z>\dfrac{-0.25}{0.25})\\\\=P(z>-1)\\\\=0.8413$

b) What is the probability that the heaviest brick in the sample exceeds 3.75 pounds?

$P(X>3.75)\\\\=P(z>\dfrac{3.75-3}{0.25})\\\\=P(z>\dfrac{0.75}{0.25})\\\\=P(z>3)\\\\=0.9987$

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3 years ago

How can completing the square aid in solving quadratic functions?

Elden [556K]

Completing the squares tells us exactly what square root we will need to calculate our answer.

Using the formula below you can find these answers:
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(x-5)^ 2 = - K/A
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Does this make sense?

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3 years ago