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guajiro [1.7K]
3 years ago
12

Ella practice the piano for 2.4 hours each week about how many hours does she practice the piano each year

Mathematics
1 answer:
blondinia [14]3 years ago
3 0

There is ~ 52.15 weeks in a year.

Ella practices 2.4 hours each week

Multiply the two together

2.4 x 52.15 = 125.16

Ella practices ~125.16 hours each year.

hope this helps

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How many unit cubes would it take to completely fill the prism with no gaps between unit cubes?
Lemur [1.5K]

Answer:

72 cubes

Step-by-step explanation:

Top view of the rectangular prism shows the unit cubes arranged in two rows along the length.

In each row number of unit cubes arranged = 9

Right view side of the prism shows the unit cubes arranged in two columns.

Number of unit cubes in each column = 4

Total number of cubes arranged in the prism = (Number of cubes in each row × Number of cubes arranged in two columns) × Number of columns

= (9 × 4) × 2

= 72

Therefore, number of cubes filled completely in the prism with no gaps = 72

6 0
3 years ago
Is 12 posters for 36 students equivalent to 21 posters to 63 student
Dmitry [639]

yes.

this is division. 36 divided by 12 is 3. 63 divided by 21 is 3.

3 0
3 years ago
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It takes 22 hours for a hosepipe with a flow of 12 litres per minute to fill a swimming pool. How long will it take if its flow
Monica [59]

Answer:

t2 = 52.8 hours

it will take 52.8 hours if its flow is reduced to 5 litres per minute.

Step-by-step explanation:

The volume of the swimming pool can be written as;

Volume V = flow rate × time

V = R×t

V = R1×t1 = R2×t2

R1×t1 = R2×t2

t2 = R1×t1/R2 ........1

Given;

Flow rate R1 = 12 litres per minute

Flow rate R2 = 5 litres per minute

time t1 = 22 hours

Substituting the given values into equation 1;

t2 = R1×t1/R2 = 12×22/5

t2 = 52.8 hours

it will take 52.8 hours if its flow is reduced to 5 litres per minute.

3 0
3 years ago
Mr. Smith donated $378 to 2 charities. Charity A received 5 times as much as Charity B. How much did Charity B received from Mr
MariettaO [177]

Answer:

$63

Step-by-step explanation:

let x represent Charity B then Charity A = 5x

Sum the two and equate to 378, that is

x + 5x = 378

6x = 378 ( divide both sides by 6 )

x = 63

Thus Charity B received $63

5 0
3 years ago
Susan solved this problem. She says the answer is hours. Susan spent hours babysitting on Monday and hours babysitting on Tuesda
grandymaker [24]
Susan answer = 7 1/4

Approximate spent hours on monday = 3
Approx. spend hours on Tuesday = 4 

So, In total, it is approx. 7

In short, Your Answer would be Option <span>A. Susan’s answer is reasonable. She spent almost 3 hours babysitting on Monday and a little more than 4 babysitting hours on Tuesday (3 + 4 = 7). That is a little more than 7 hours in all. 

Hope this helps!</span>
6 0
3 years ago
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