a rectangle piece of board 0.894m long and 0.665m wid3 which shows the dimension of the board to correct one decimal place

step-by-step explanation:

compare

total of apples - take away four

6-4 = 2

answer is 2 apples

57.09 minus 7.0435 equals

step-by-step explanation:

just subtrach them both and u get the answer of 50.0465

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.