<span>Answer: 4
Explanation:
Translate the english language to mathematical (algebraic) language.
This implies to define the variables and translates the statements into equations.
1) Adventure
Play sells an mp3 player for $18.00 and charges $3.25 per song.
Cost = price of the mp3 player + price each song * number of songs
Variables:
number of songs: n
price each son: $3.25
price of the mp3 player: $ 18.00
Cost: c(n), this means that the cost is a function of n.
c(n) = 18 + 3.25n
2) King
Music sells a player for $23.00 and charges $2.00 per song. For how many
songs will the cost be the same?
Using the same procedure used for Adventure Play case:
c(n) = 23 + 2n
3) Equal cost =>
18 + 3.25n = 23 + 2n
=> 3.25n - 2n = 23 - 18
=> 1.25n = 5
=> n = 5 / 1.25
=> n = 4
Answer: the cost will be the same for 4 songs.
</span>
A=48
b=144
c=-84
First, you simplify the second equation by multiplying 6 to 2x and 6 to 7. Then, you get the two equations, (4x-2) times (12x+42). You then use the FOIL method, multiplying 4x to 12x, 4x to 42, -2 to 12x, then -2 to 42. Simplify. Then number before x squared is your a value, value before x is b, and the value without x is c.
4a+9=(-9+30-25). 4a+9=30-34. 4a+9=-4. 4a=-13. A=-3.25 :)
Answer:
p = 0.299
Step-by-step explanation:
A proportion is the number of desired outcomes divided by the number of total outcomes.
Desired outcomes:
We want to estimate the proportion of oil tankers that had spills. Of the 1453, 1018 did not have spills, and 1453 - 1018 = 435 had. So 
Total outcomes:
All the 1453 tankers, so 
Estimating the proportion
Answer:
b
Step-by-step explanation:
there's a property for Alternate Interior Angles
