Answer:
could you upload a picture?
Step-by-step explanation:
5,12,13
5X5=25
12X12=144
25+144=169
answer: square root 169=13
Answer:
x=6
Step-by-step explanation:
13x+12=90
13x=78
x=6
It would be 20 years because if En is 100 Mark will be 25. 25 times 4 is equal to 100