Which pair of figures shows a dilation with a scale factor of 1 1/2?

QRS and TRU

Step-by-step explanation:

A dilation of 1 + 1/2 means that the second image is (1 + 1/2) times the lenght of the first one.

for this, you can chek with one of the sides of the triangles:

with the triangles QRS and TRU we have that the line RS has a lenght of 2 units, then the lenght of the RU must be 1 and 1/2 times that lenght:

RU = (1 + 1/2)*2 = 2 + 1 = 3 units

and we can see in the grap that the segment RU has a lenght of 3 units, so this is a dilation with a scale factor of 1 + 1/2

For the other 3 options we can see that in the top left one bot triangles are equal, and in the bottom two the dilation is witha scale factor of 2.

is means division by fractions

step-by-step explanation:

-2x + 7 = 7

subtract 7 from both sides.

-2x = 0

divide both sides by -2.

x = 0