To make pickles, fresh cucumbers are soaked in a salt water solution called brine. how many liters of a 4% brine solution must be added to 20 liters of a 10% brine solution to dilute it to an 8% solution?

Let the quantity of 2% brine solution added be X L

x=12L

12 litres of 2% brine solution must be mixed.  

Step-by-step explanation:

r(0,90)(x,y) . t(-5,0)

last option

step-by-step explanation:

∆def to ∆d"e"f"

- rotate 90 counterclockwise degrees

- then translated 5 to the left (x --> x - 5)

answer is the last option

"image"

step-by-step explanation:

in most of these problems, the notation is that the point with a "prime" is the image of the point without. that is, b' is the image of b.

here, there is no dilation or reflection. there is simply translation (with no direction shown). which figure you call the "preimage" and which one you call the "image" is up to you. as a matter of convention, the naming is as described above.