X+y+5=0

y=-x-5

If a solution exists y=y so we can say

x^2-9x+10=-x-5 add x+5 to both sides

x^2-8x+15=0 now factor

x^2-3x-5x+15=0

x(x-3)-5(x-3)

(x-5)(x-3) so x=3 and 5, using y=-x-5

y(3)=-8 and y(5)=-10

So the two solutions are:

(3,-8) and (5,-10)

6 0

3 years ago

Read 2 more answers

The sum of two numbers is 25. One number

nevsk [136]

Answer:

the numbers are 9 and 16

hope it helps

8 0

2 years ago

A group of naturalists catch, tag and release 121 trout into a lake. The next day they catch and release 48 trout, of which 22 h

RideAnS [48]

Answer:

264.

Step-by-step explanation:

Let x represent the number of trout in the lake.

We have been given that a group of naturalists catch, tag and release 121 trout into a lake. The next day they catch and release 48 trout, of which 22 had been tagged.

Using proportions, we will get:

$\frac{\text{Total trouts}}{\text{Tagged trouts}}=\frac{48}{22}$