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PilotLPTM [1.2K]

2 years ago

5

PLEASE HELP QUICK!!! Six friends, four boys and two girls, went to a movie theater. They wanted to sit in a way so no girl sits

on either first or last chair. How many such arrangements are possible?

1 answer:

GenaCL600 [577]2 years ago

3 0

Answer:

I think the answer is 6

Step-by-step explanation:

B = Boy

G = Girl

B G G B B B

B G B G B B

B G B B G B

B B G G B B

B B G B G B

B B B G G B

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Step-by-step explanation:

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2 years ago

Find the quotient of 42 4 6

Leni [432]

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3 years ago

You have a standard deck of cards the deck has 52 total cards and contains 4 suits: hearts, clubs, diamonds, and spades. Each su

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Step-by-step explanation:

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2 years ago

A scientist wishes to estimate the mean breaking strength of a certain type of steel rod within 3.0 psi with 95% confidence. Bas

yaroslaw [1]

Answer:97 rods

Step-by-step explanation:

The number of steel rods for 95% confidence level

$n=\left ( \frac{Z_\frac{\alpha }{2}\times \hat{\sigma }}{E} \right )^2$

$Z_\frac{\alpha }{2}=1.96$

E=3

$\hat{\sigma }=15$

Substituting values

$n=\left ( \frac{1.96\times 15}{3}\right )^2$

$n=96.04\approx 97$

Thus 97 rods is tested

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3 years ago