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3 years ago

Three Friends all have ages that are consecutive integers. The sum of their ages is 48. What is the age of the oldest friend?

Mathematics

2 answers:

zlopas [31]3 years ago

3 0

The oldest friend is 17 years old. 15+16+17. 5+6=11+7=18. 18+10+10+10= 48. get my level B) jk

Ksenya-84 [330]3 years ago

3 0

"The sum of their ages is 48" means x + (x + 1) + (x + 2) = 48

x + x + 1 + x + 2 = 48 

x + x + x + 1 + 2 = 48 

3x + 3 = 48 

3x = 48 - 3 

3x = 45 

x = 45/3 = 15 

So if the youngest is 15 (x = 15), then the oldest is x + 2 or 15 + 2 = 17

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A matrix is a rectangular array or table with rows and columns of numbers, symbols, or expressions that is used to represent a mathematical object or an attribute of one. is a matrix having two rows and three columns, for instance.

Given $M=\left[\begin{array}{cc} 1 & 0 \\ -4 & 3 \\ 2 & 5 \end{array}\right]$

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