The answer is A. 42
Solution:
Let x= ones digit, y=tens digit
1st condition (original number) : 7(x+y)=10y + x
2nd condition (new number by reversing the digits): 18+x+y=10x+y
simplifying:
1st condition: 6x=3y
2nd condition: x=2
substituting x=2 to 6x=3y
<span>y=4</span>
Polygon A is similar to Polygon B because Polygon B is a dilation of Polygon A.
Answer:
see explanation
Step-by-step explanation:
(a)
let y = f(x), that is
5x + 3 = y
Rearrange making x the subject
Subtract 3 from both sides
5x = y - 3 ( divide both sides by 5 )
x = (y - 3) / 5, hence
(x) = (x - 3) / 5
(b)
(8) = (8 - 3) / 5 = 5/ 5 = 1
