There are three integers. The quotient of the first number and the third number is 13. If the first number was three more, then it would be double the sum of the second and third number, combined. The sum of all the numbers is 21. What are the numbers?

Given:

There are three integers.

The quotient of the first number and the third number is 13.

If the first number was three more, then it would be double the sum of the second and third number, combined.

The sum of all the numbers is 21.

To find:

The all three numbers.

Solution:

Let the three numbers are x, y and z.

The quotient of the first number and the third number is 13.

         ...(i)

If the first number was three more, then it would be double the sum of the second and third number, combined.

           [Using (i)]

Divide both sides by 2.

         ...(ii)

The sum of all the numbers is 21.

       [Using (i) and (ii)]

Multiply both sides by 2.

Now,

        [Using (i)]

        [Using (ii)]

Therefore, x=13, y=7 and z=1.

160

step-by-step explanation:

idk

i hope i

for the friend request.

when a figure, such as triangle (xyz) is reflected over the line y = x to create x'y'z' the x-coordinates and y-coordinates of the original image (pre-image) will be reversed for the image. (e.g., (x, y) > (y, x)) this means that the pre-image position of the x- and y-coordinates switch places which in turn provides a mirror like image of the original xyz.  

i notice that when i draw a line segment from x to x', that the points are parallel from each other -- they are exactly across from each other and do not intersect with any other points.  

yes, think i would see the same characteristic if you drew the line segment connecting y with the reflecting line and then y' with the reflecting line because of the essence of reflections. because it is a mirror image, each point was effected the same way which leads me to conclude that they same would apply to y and y'.