Answer:
The age of the youngest friend is 9 years old.
Step-by-step explanation:
3a = 30 - 3
= 27 ÷ 3
= 9
= 9 + 10 + 11 = 30
= 9 is the smallest number. So, the youngest friend is 9 years old.
Answer:
2.5
Step-by-step explanation:
From the diagram, figure B was enlarged to obtain figure A.
The two figures are therefore similar.
The corresponding sides are in the same proportion. That constant value of the proportion is called scale factor.
It is given by:

Figure B is the image of A

Therefore the scale factor is 2.5
The answer is d.2. hope it helps
Answer:
I believe 7 is the GTF (greatest common factor)
Answer:

Step-by-step explanation:
<h2><u>IdEnTiTy UsED</u></h2>

1)

=(x-5)²
2)



3)

= (1+x)²