A first number plus twice the second number is 8. Twice the first number plus the second totals 19 find the numbers

The numbers are 10 and -2.

Step-by-step explanation:

This question is solved using a system of equations.

I am going to say that:

The first number is x

The second number is y.

A first number plus twice the second number is 8.

This means that:

, that is,

Twice the first number plus the second totals 19

So

Since

The numbers are 10 and -2.

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.

answer is  

a.

p = 78

step-by-step explanation: