Therefore, the decimal equivalent to the expression
is 50.02
The given expression is:

Note that 
The expression therefore becomes:
(5 x 10) + (2 x 0.01)
50 + 0.02
= 50.02
Therefore, the decimal equivalent to the expression
is 50.02
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For this one I would add the measurements for the 3 shins and subtract it from 1.2.
0.125 + .09 + .75 = .965
Then...
1.20 - .965= .235
So...
The fourth board has the width of .235 cm.
Answer:
Step-by-step explanation:
Set the cost equation C(l) = l3 – l2 + l + 2.5 equal to $11.00 and solve for l:
C(l) = 2l + 2.5 = $11, or
2l = 8.5, or l = length = 4.25 inches