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Reptile [31]
3 years ago
6

Megan has practiced the piano for 7.5 hours over the course of this week. She practices on Tuesdays, Thursdays, and Saturdays. H

ow many minutes is Megan's average practice.
Mathematics
1 answer:
gulaghasi [49]3 years ago
7 0

Answer:

150

Step-by-step explanation:

you have three days and 7.5 so decide 7.5 by 3 it equals 2.5 which in minutes is 150

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The expression x^4-9
vlada-n [284]

Answer: C

Step-by-step explanation:

By the difference of squares, x^{4}-9=(x^{2}+3)(x^{2}-3)

7 0
2 years ago
Help.........?plsplsplpslp
k0ka [10]
The answer is b because it has a positive slope
7 0
3 years ago
3. A sphere has a volume of 3000 m.3 Find its diameter.
nekit [7.7K]

Answer:

8.565

Step-by-step explanation:

Volume=4/3pir^3

3000m^3=4/3pir^3

3000/4/3=pir^3

25/pi=r^3

approx 78.539=r^3

r=4.2825

we know,

2r=d

d=2×4.2825

d=8.565

You can round the answer off yourself :3

5 0
3 years ago
A train travels a total of 67 km at a constant speed of 110 km/h.
KengaRu [80]

Answer:

36 m 32 s

Step-by-step explanation:

67 /110 = 0.609 hour

0.609 × 60 minutes = 36.54 minutes

36 minutes + 0.54×60 second

= 36 minutes 32 seconds

4 0
3 years ago
When a number x is multiplied by 4, the result is 25 .
Effectus [21]
Hello,

To solve this question, a good method to use is creating an equation.

The number x being multiplied by 4 can be represented as 4x.
If this results in 25, we can create the equation:

4x = 25

To solve for x, you want to remove the coefficient of 4 from x, so we can divide by 4 on both sides (doing this we will only get x on the left side of the equation, which is what we are trying to solve for).

So, dividing by 4 on both sides, we have
(4x / 4) = (25 / 4)
x = 25/4

x = 25/4, which cannot be further simplified as a fraction. However, this can be represented by 6.25 in decimal form.

x = 25/4, or 6.25

Hope this helps!

7 0
3 years ago
Read 2 more answers
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