Let K be the number of songs on Kelly's music player,
L be the number of songs on Lou's music player and T be the number of songs on Tiffany's music player.
We know that,
K = 4*L
and
T = 6*L
and also
K + T + L = 682
Then,
4*L + 6*L + L = 682
11L = 682
L = 62
From here we know that
T = 6*62 = 372
K = 4*62 = 248
So Kelly has 248 songs on her music player
As the sides shown are same so the base of large triangle is double the base of smaller triangle
That is
2(3x-8) =20
Divide both sides by 2
3x-8 = 10
Add 8 to both sides
3x =18
Divide both sides by 3
x=6
So answer is 6.0
Common difference d when The first term of an arithmetic sequence is 5, and the tenth term is 13 is 
Step-by-step explanation:
The first term a₁ = 5
The tenth term a₁₀ = 13
Find Common difference d=?
The formula used for arithmetic sequence is:

where aₙ = nth term
a₁= 1st term
d= common difference
Finding d:

So, Common difference d when The first term of an arithmetic sequence is 5, and the tenth term is 13 is 
Keywords: arithmetic sequence
Learn more about arithmetic sequence at:
#learnwithBrainly
Answer:

Step-by-step explanation:
If someone wants to practice for at least 22 minutes a day, they want to practice 22 minutes or more. This is the same as greater than or equal to, and we want the minutes practices to be greater than or equal to 22. We can assume minutes practiced is x, and create the inequality
.
Hope this helped!
Answer:
57.4
Step-by-step explanation:
63.9 - 6.5 = 57.4
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