Answer:
20 cookies - <u>$ 12</u>
Step-by-step explanation:
6 cookies - $3.60
20 cookies - X
X = (20 · 3,60) : 6
<u>X = $ 12</u>
Answer:
x=4 and y=1
Step-by-step explanation:
4x-y=15
2x+y=9
6x=24
x=24/6
x=4
4x-y=15
4(4)-y=15
16-y=15
-y=15-16
-y=-1 Divide both sides by -1
y=1
Answer:
reflection is defined as the change in the direction of a wavefront at the interface between two different media, bouncing the wavefront back into the original medium. A common example of reflection is reflected light from a mirror or a still pool of water, but reflection affects other types of waves beside light.
Step-by-step explanation:
