X=21
If the triangle are similar then you can divide.
75 divided by 25 is 3
72 divided by 21 is 3
so that means if you take 7 times 3 you will get 21
Answer:
7
Step-by-step explanation:
IF 9 IS ROUNDED TO THE NEAREST 10 IT WILL BE SO IF 9 THOUSHAND IS ROUNDAND TO THE NEAREST THOUSAND IT WILL BE 100 DONT WORRY ABOUT THE 755
Answer:

Step-by-step explanation:
Using the rules of exponents
⇔ 
⇔ 
Given

= 
= 
= 