Answer:
12.4+3√7 is irrational
Step-by-step explanation:
12.4 is a rational number
3√7 is an irrational number
<u>The sum of a rational number and an irrational number is irrational.</u>
So, 12.4+3√7 is irrational
That would be 8 and 9.
9*8=72
While 9+8=17
I hope this helps! (:
Answer:

Step-by-step explanation:
9 pencils cost $7.74
6 pencils cost x
The ratios are

According to the alternendo property,

Answer:
D. Is congruent to
Step-by-step explanation:
This symbol is used when two figures have exactly same lengths and angles, which means they are congruent