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2 years ago

1. Mark practices the piano for 2/3 of an hour for 6 hours every week. How many hours

Mathematics

1 answer:

vichka [17]2 years ago

6 0

Answer:

4 hours each week

Step-by-step explanation:

2/3 of an hour = 40 minutes

40 times 6 = 240 minutes

240 (minutes) / 6 (hours) = 4 hours practiced each week

I hope this helps :)

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Evaluate 7(-4) - |-6| + |4| <br> A. 13<br> B.-18<br> C. -30

tester [92]

Hello there!

Answer: ⇒ C. -30

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Step-by-step explanation:

First you had to remove parenthesis.

$-7*4-|-6|+|4|$

Then you multiply by the number.

$=-28-|-6|+|4|$

Apply absolute value.

$|-6|=6$

$=-28-6+|4|$

Again apply absolute value.

$|4|=4$

$=-28-6+4$

Simplify it's should be the correct answer.

$=-30$

________________________________________________________________

Hope this helps!

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Have a great day!

-Charlie

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3 years ago

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oksano4ka [1.4K]

Answer:

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Step-by-step explanation:

I did all of them but the last one.

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valentina_108 [34]

Since b = 3 the equation changes

5a - 10(3) = 45
5a - 30 = 45

(Add 30 to both sides)
5a = 75
Divide 5 to both sides
a = 15

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mario62 [17]

40.64/2.54= 16 inches

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