Which transformation shows that the two given circles are similar?

1 answer:

5 0

What we know:
Circle A has a center at (2,0) and a radius of 8
Circle A' has a center at (-1,5) and a radius of 3

What we need to find:
we need to find the transformation from the center point of A to A' and the scale factor

Circle A can be mapped to Circle A'
center point translation (x,y)⇒[(x+a),(y+b)]⇒(x-3, y+5)

2+a=-1 0+b=5
-2+2+a=-1-2 b=5
a=-3

scale factor is 3/8
8x=3
8/8x=3/8
x=3/8

<span>A)(x, y) → (x - 3, y + 5); scale factor 3/8 </span>

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mash [69]

Answer:

$2.20b + 3.60m = 44.20\\2.50b + 3.40m = 44.70$

Step-by-step explanation:

So in this systems of equations, we know the prices of the items, so the coefficients will represent how many Mary is getting of that item. So you can represent amount of bread as the variable b and the amount of milk as the variable m. On the right will be the total amount spent, since multiplying the price by how much you buy should get you the price

So since at store A, she spends 44.20 and bread costs 2.20 and milk costs 3.60 you get

$2.20b + 3.60m = 44.20$