The error with this inequality is that they had used a > (greater than) symbol instead of ≤ (less than or equal to) symbol. With this verbal sentence, "is at most 15" implies that while the quotient <em>can</em> be 15, it cannot be greater than that.
The correct inequality is: t ÷ 4.2 ≤ 15.
Answer:
Step-by-step explanation:
Hours: 1 5 10 15 20 25
Minutes: 60 300 600 900 1,200 1,500
These show proportional relationship because they are all times hour by 60 minutes and the hours go by 5 hours, each.
Answer:
w(-4.2) = 3(-4.2) -1 = -12.6 - 1 = -13.6
Step-by-step explanation:
The w(-4.2) is your t so you substitute it in your expression which means you get 3(-4.2) -1 and that gives you -13.6.
The ratio of the lengths is 75 : 25 or 3 : 1
The ratio of and area is the square of this: ie 9 : 1 or 75^2 : 25^2
(In working out the area the radius is squared)
The ratio of the volumes is the cube of this: ie 27 : 1 or 75^3 : 25^3
(In working out the volume the radius is cubed)
Hopefully this explains it
