x=4
4x-(12<span>÷3)+2x=20
4x-(4)+2x=20
4x4-4+2x4=20
16-4+8=20
12+8=20</span>
Answer:
64
Step-by-step explanation:
we have given that mean of 9 students is 84
so total score of 9 students = mean×9
=84×9=756
and we have given mean score of exam is 82 and there is total 10 students so the total score of 10 students =10×82
=820
so the unreadable score = score of 10 students -score of 9 students =820-756=64
I think y is 2 and x is 3 is the answer
Answer:
chemical energy to produce light energy
Answer:
(2x+7)(x-1)
Step-by-step explanation:
2x²+5x-7
2x²+7x-2x-7
x(2x+7)-1(2x+7)
(2x+7)(x-1)