Maggie's brother is 6 years younger than four times her age. The sum of their ages is 29. How old is Maggie?

Hi there!

Let m = Maggie's age

Let her brother's age be represented by (4m - 6)

The ages sum up to 29, therefore:

29 = m + (4m - 6)

Combine like terms:

29 = 5m - 6

Add 6 to both sides:

35 = 5m

Divide both sides by 5:

m = 7.

a line is an defined derm because it

a)contains an infinite number of points b) can be used to create other geometric shapes c)describes something that does not have width or depth d) is a term that does not have a formal definition. a line is an undefined term because it: contains an infinite number of points.