Respuesta :
Answer: [tex]x=21.75[/tex]
Step-by-step explanation:
You need to convert from mixed number to decimal number. To do this you can follow the steps shown below:
Step 1: You must divide the numerator of the fraction by the denominator of the fraction.
Step 2: Now you must add the quotient obtained to the Whole number part.
So, you get:
[tex]7\frac{1}{4}=7+0.25=7.25[/tex]
Then, the scale image that maps "Figure a" onto "Figure b" is:
[tex]1:7.25[/tex]
Finally, in order to find the value of "x", you need to multiply the given length of the corresponding side of "Figure a" by [tex]7.25[/tex].
Therefore, you get that the result is:
[tex]x=(3)(7.25)\\\\x=21.75[/tex]