Adam wishes to have $19,000 available in 18 years to purchase a new car for his son as a gift for his high school graduation. To
1 answer:
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Answer:
Diego playlist has 36 songs in rock genre, 9 songs in Country genre, 27 songs in hip hop genre and 24 songs in electronica genre.
Step-by-step explanation:
Given:
Total Songs on playlist = 90
rock = 40%
country = 10%
hip hop = 30%
rest is electronica.
We need to find the number of songs in each genre.
rock = 40%
So Number of songs in rock genre =
country = 10%
So Number of songs in country genre =
hip hop = 30%
So Number of songs in hip hop genre = .
and rest is electronica genre.
Number of songs in electronica genre can be calculated by Subtracting Number of songs in rock genre and Number of songs in country genre and
Number of songs in hip hop genre from Total number of songs.
framing in equation form we get;
Number of songs in electronica genre =
Hence Diego playlist has 36 songs in rock genre, 9 songs in Country genre, 27 songs in hip hop genre and 24 songs in electronica genre.
Answer:
Width = 2
Length = 5
Step-by-step explanation:
let A be the area of the rectangle
L be the length of the rectangle
w be the width of the rectangle
<u><em>Formula</em></u>: ‘<u><em>area of a rectangle</em></u>’
A = L × w
…………………………………………………
A = L × w
⇔ 10 = (w + 3) × w
⇔ 10 = w² + 3w
⇔ w² + 3w - 10 = 0
<u><em>Solving the quadratic equation</em></u> w² + 3w - 10 = 0 :
Δ = 3² - 4(1)(-10) = 9 - (-40) = 9 + 40 = 49
then √Δ = 7
-5 is not valid ,because w represents the width
which must be a positive number
Then w = 2
<u><em>Conclusion</em></u>:
Width = 2
Length = 2 + 3 = 5