Ametal bar is to be divided into two pieces so that one piece is 3 centimeters longer than twice the length of the other. if the sum of the squares of the two lengths is 109 square centimeters, find the two lengths

The two lengths are 3.4303 and 9.8606 centimeters

Step-by-step explanation:

The metal bar is divided into two pieces, so we are going to call X the length of the first piece and Y the length of the second piece.

From the phrase: one piece is 3 centimeters longer than twice the length of the other, we can separate and rewrite as:

One piece - is - 3 centimeters - longer than - twice the length of the other

X                   =               3                      +               2         *       Y

So, X=3+2Y is our first equation

From the phrase: the sum of the squares of the two lengths is 109 square centimeters, we can rewrite as:

The sum of the squares of the two lengths - is - 109 square centimeters

                                                           =      109

So, X^2+Y^2=109 is our second equation

Replacing the first equation on the second question we get:

Solving this equation we find two solutions:

Y=3.4303 and Y= -5.8303

Since the question is talking about the length there is no sense use Y=-5.8303, then our first length is 3.4303

So replacing this value on the first equation we get:

X= 3 + 2*Y

X= 3 + 2*3.4303

X= 9.8606

Finally the two length are 3.4303 and 9.8606 centimeters

y = 5x + 17

step-by-step explanation:

a perpendicular line will be the opposite reciprocal slope of the given equation.   the slope given is -1/5 so the opposite reciprocal is 5

find b:

7 = 5 (-2) + b

7 = -10 + b

17 = b

write equation

y = 5x + 17