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2 years ago

9

Lexie is arranging 3 different books in a row on a shelf. Create a sample space for the arrangement of a biography (B), a myster

y story (M), and a comic book

1 answer:

adelina 88 [10]2 years ago

8 0

Answer:

d m c

d c m

m d c

m c d

c d m

c m d

6 ways

Step-by-step explanation:

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In a class of 23 student the girls were 7 more than the boys how many boys were in the class

Softa [21]

Answer:

x=# of boys

x+7=# of girls

x+x+7=25

2x+7=25

2x=25-7

2x=18

x=18/2

x=9 boys

x+7=16 girls

If you don't understand variables use trial and error.

Boys Girls

1 8

2 9

3 10

4 11

5 12

6 13

7 14

8 15

9 16 9+16=25 students

You could start this way...

Boys Girls

12 13

11 14

10 15

9 16 16 is 7 more than 9

5 0

3 years ago

Please helpppp:( Thanks

arlik [135]

She can simplify the 12 and the 3.

8 0

3 years ago

The price of a fan is $15. This price is 27% lower than last week.

Goshia [24]

The price of fan was 20 Dollars 55 cents last week.

Step-by-step explanation:

Let,

The price last week = x

As the price is 27% lower than last week, therefore

(100%-27%) * Price last week = $15

73% * x = 15

Solving the percentage;

$\frac{73}{100}*x=15\\ Multiplying\ both\ sides\ by\ 100\\100*\frac{73x}{100} = 15*100\\73x=1500\\Dividing\ both\ sides\ by\ 73\\\frac{73x}{73} = \frac{1500}{73} \\x= 20.55$

The price of fan was 20 Dollars 55 cents last week.

Keywords: Percentage, multiplication.

Learn more about percentages at:

#LearnwithBrainly

5 0

2 years ago

A chain fits tightly around two gears as shown. What is the radius of the smaller gear? Round your answer to the nearest tenth.

GrogVix [38]

Using the Pythagorean theorem we can solve for the radius

see attached picture:

7 0

2 years ago

Read 2 more answers

What is three and one third plus four and one third equals

prohojiy [21]

Answer:

7 2/3

Step-by-step explanation:

3 0

2 years ago