3 years ago

Can someone help me figure this out?

Mathematics

1 answer:

Alla [95]3 years ago

5 0

Answer:

See picture below.

Step-by-step explanation:

I had to write a new option for one of the lines.

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6) Solve: 7 = x + 12 A) -19 B) -5 C) 4 D) 5

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Answer: B) -5

Step-by-step explanation: all you do is subtract 12 from each side and you will get -5

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4 years ago

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120 books inceased by 55%

bogdanovich [222]

Answer:

186 books with the 55% increase

Step-by-step explanation:

120 times 55% increase = 66 more in increase

Now take the increase and add it to the original amount of books to get the number of books with the increase

66 + 120 = 186

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3 years ago

Shirley purchased a plot of land for $19,500. The land appreciates about 3.9% each year. What is the value of the land after fiv

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Answer:

3802,5

Step-by-step explanation:

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760,5*5=3802,5

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3 years ago

Kevin paid $88.45 for a new pair of clippers. This

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$88.45, that is the price before tax

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3 years ago

The Regency Hotel has enough space at its entrance for six taxicabs to line up, wait for guests, and then load passengers. Cabs

maksim [4K]

Answer:

The appropriate solution is:

(1) 22.81 minutes

(2) 0.171

Step-by-step explanation:

According to the question, the values will be:

The service rate of guess will be:

= $5+3.5$

= $8.5 \ minutes$

The mean arrival rate will be:

$\lambda =\frac{60}{5}$

$=7.5 \ cabs/hr$

The mean service rate will be:

$\mu= 7.05 \ cabs/hr$

(1)

The average time a cab must wait will be:

⇒ $W_q=22.95-\frac{1}{7.05}$

⇒ $=\frac{161.798-1}{7.05}$

⇒ $=\frac{160.798}{7.05}$

⇒ $=22.81 \ minutes$

(2)

The required probability will be:

⇒ $P(X\geq 6)=\frac{1-2.115}{1-7.5}$

⇒ $=\frac{-1.1115}{-6.5}$

⇒ $=0.171$

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3 years ago