Answer:
proportion used: 7/20
7emails were from the same person
Step-by-step explanation:
35/100= 7/20
7/20 of 20
20/20=1
1x7= 7
I have solved some examples in the picture
If anything is unclear let me know.
:)
81^x=27^(x+2)
3^4=81 and 3^3=27
3^4x=3^(3(x+2))
exponents are the same so we just take those
4x=3x+6
x=6
