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valentina_108 [34]
3 years ago
9

Correct or wrong please answer me

Mathematics
1 answer:
Irina18 [472]3 years ago
5 0

Answer:

the first one is true i think and the second one is true

Step-by-step explanation:

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Your friends piano lesson lasts 15 minutes longer than your piano lesson. You have 6 lessons per month and your friend has 4 les
hichkok12 [17]

Answer:

45 minutes

Step-by-step explanation:

Given:

Your friends piano lesson lasts 15 minutes longer than your piano lesson.

You have 6 lessons per month and your friend has 4 lessons per month.

At the end of the month, your time spent at piano lessons is the same as your friends time.

Question asked:

How may minutes is your friends piano lesson ?

Solution:

Let your piano lesson in minutes = x

Then your friend's piano lesson will be = x+15

As you have 6 lessons per month, it contains total minutes:-

1 lesson = x\ minutes

6 lessons = x\times6=6x\ minutes

As your friend has 4 lessons, it contains total minutes:-

1 lesson = x+15\ minutes

4 lessons =  4(x+15)=4x+60\ minutes

At the end of the month, time spent at piano is same:-

6x=4x+60\\ \\ Subtracting\ both\ sides\ by\ 4x\\ \\ 6x-4x=4x-4x+60\\ \\ 2x=60\\ \\ Dividing\  both\ sides\ by\ 2\\ \\ \frac{2x}{2} =\frac{60}{2} \\ \\ x=30\ minutes

Your piano lesson in minutes = x = 30 minutes.

Your friend's piano lesson will be = x+15 = 30 + 15 = 45 minutes

Therefore, 45 minutes is your friends piano lesson.

8 0
3 years ago
Lina took out a 4-year loan for $14,000 to buy a new car. She has to pay 4% simple interest on the loan. How much will Lina have
tia_tia [17]
16,240 is the answer

((14,000×4%)4)+14,000
3 0
3 years ago
Mr. Marzano taught 150 students at the high school. The following year he started teach elementary students and had 22 students.
GenaCL600 [577]

Answer:

85%(estimated)

Step-by-step explanation:

150-22=128

changed ÷ original x 100%

128 ÷ 150 x 100%

≈ 85%

3 0
3 years ago
Which is the value of g(-5) if g(x)=3.4x-8​
Dennis_Churaev [7]
G(-5) = -25

to solve:
g(-5) = 3.4(-5) -8
6 0
3 years ago
A sum of rs.2520 is divided in the ratio 3:4 . find the part in each term.​
kaheart [24]

Answer:

total \: ratio  = 3 + 4 = 7 \\  =  >2520 \div   \frac{3}{7}  = 5880 \\  =  > 2520 \div  \frac{4}{7}  = 4410

7 0
3 years ago
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