Hey!
You have to find 80% of 70. First change 80% to a decimal and multiply by 70.
To change percents to decimals, remove the % sign and move the decimal point 2 places to the left.
Now multiply
<em>The restaurant sold 56 salmon fillets.</em>
Good luck and hope this helps! :)
Just divide 20/23 and you'll get 0.8695652174 which is also rounded up to 0.87
If you divid 8.4 x 107 and 3 x 103 you should get 2.8 x 104
Let me answer those two questions in the reverse order.
1). How it can be solved:
7x + 5 = 3x - 11
Subtract 3x
from each side: 4x + 5 = - 11
Subtract 5
from each side: 4x = - 16
Divide each side
by 4 : x = - 4
2). The answer is x = - 4 .
-4 is called the 'solution' to the equation, because that's the number
that 'X' MUST be. If it's any other number, then the equation is not
a true statement.