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yulyashka [42]
3 years ago
6

Which expression could be used to solve this problem? Bart practices piano every day. First he practices songs for 20 minutes. T

hen he practices scales for 15 minutes. How much time does Bart practice piano in 3 days? A. 3 × (20 – 15) B. 20 × (15 + 3) C. 3 × (20 + 15) D. 20 × (15 – 3)
Mathematics
2 answers:
nexus9112 [7]3 years ago
3 0
C. 3 x (20 + 15)
Hope this helps!!!
skelet666 [1.2K]3 years ago
3 0
The correct answer is C. 3 x (20+15)
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17/39 + 11/12 −( 5/12 + 4 /39 )
Nana76 [90]

Answer:

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Step-by-step explanation:

Make common denominator

204/468 + 429/468 = 633/468 - (195/468 + 48/468)

Simplify: 633/468 - 243/468

390/468 can be further broken down to 5/6 if you divide by a common factor which is 78.

8 0
2 years ago
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Nostrana [21]

Answer:

\frac{1}{4}

Step-by-step explanation:

Since there are a total of 4 colors, and there are 5 of each colors, the total marbles in the bad would be;

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If a color is selected at random the probability would be

\frac{part}{whole}

our part is 5

our whole is 20

so the probability would be;

\frac{5}{20} or \frac{1}{4} when reduced

Hope this helps!

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1 year ago
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To decrease an amount by 62%, what single multiplier would you use?
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