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2 years ago

Gasoline truck is carrying 189.271 L of gasoline what is the what is the

Mathematics

1 answer:

ch4aika [34]2 years ago

5 0

Answer:

100+80+9+0.2+0.07+0.001

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In how many ways can Susan arrange 7 books into 5 slots on her bookshelf?

KatRina [158]

Answer:

2520

Step-by-step explanation:

This is permutation question

The formula for it:

N = b!/(b-s)!, where N- number of ways, b- number of books, s- number of slots

Finding the answer:

N = 7!/(7-5)! = 7!/2! = 7*6*5*4*3 = 2520

7 0

2 years ago

12.what is the probability that a boy and a girl chosen randsomly will be seniors?

zhenek [66]

$\frac{\textbf{1}}{\textbf{20}}$

Step-by-step explanation:

Probability= $\frac{\text{number of favourable outcomes}}{\text{total number of outcomes}}$

Probability for a randomly chosen girl to be senior= $\frac{\text{number of senior girls}}{\text{total number of girls}}$

Probability for a randomly chosen girl to be senior= $\frac{7}{8+11+9+7}=\frac{7}{35}=\frac{1}{5}$

Probability for a randomly chosen boy to be senior= $\frac{\text{number of senior boys}}{\text{total number of boys}}$

Probability for a randomly chosen girl to be senior= $\frac{9}{10+7+10+9}=\frac{9}{36}=\frac{1}{4}$

For two independent events,

Probability for both event 1 and event 2 to take place= $\text{probability of event 1} \times \text{probability of event 2}$

Since choosing boys and girls is independent,

Probability for both boy an girl chosen to be senior= $\text{probability for boy to be senior}\times\text{probability for girl to be senior}$

Probability for both boy and girl chosen to be senior= $\frac{1}{5} \times \frac{1}{4} = \frac{1}{20}$

So,required probability is $\frac{1}{20}$

3 0

3 years ago

Find the circumference. Use 3.14 for T. T=pie r = 2 m C = [?] m C= Td

vivado [14]

Answer:

314 square centimeters

Step-by-step explanation:

3 0

2 years ago

what is the answer to Lakshmi planted 20 begonias, but her neighbor’s dog ate 7 of them. What percent of the begonias did the do

Alenkasestr [34]

Answer:

35%

Step-by-step explanation:

divide 7 by 20.

4 0

2 years ago

Read 2 more answers

Frankie and Maria paid to get into the carnival, and they had to pay a certain amount per game. Frankie played 5 games and spent

Natali [406]

Answer:

It cost $8 per person to get into the carnival

Step-by-step explanation:

Let the entry cost be y

Let Cost of 1 game be x

Cost of 5 games = 5x

Cost of 12 games = 12x

Frankie played 5 games and spent $15.50 altogether.

So, $5x+y=15.50$ --- A

Maria played 12 games and spent $26 altogether.

So, $12x+y=26$ -- B

Plot the lines

$5x+y=15.50$ --- Black color

$12x+y=26$ --- Red color

Intersection point provides the solution

(x,y)=(1.5,8)

So, it cost $8 per person to get into the carnival

6 0

2 years ago