Answer:
13.1mi
Step-by-step explanation:
Length(l) = 4.1mi
Breadth(b) = 2.5 mi
Perimeter of a rectangle = addition of all sides that is = l + l + b + b as a rectangle has 2 opposite equal length and also breadth.
Therefore perimeter = 4.1 + 4.1 + 2.5 + 2.5
= 8.1 + 5
=13.1 mi
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5x+2=47 subtract 2 from both sides
5x=45 divide both sides by 5
x=9
8.50 * 0.06 = 0.51
0.51 + 8.50 = 9.01
10.00 - 9.01 = 99
He will receive 99 cents in change.
For addition and subtraction by hand, you need to adjust the mantissa so the exponents are the same. Here, it is convenient to use 10⁻² as the common factor. Then you have
... 0.635×10⁻² - 3.159×10⁻² = -2.524×10⁻²
_____
A calculator can deal with the numbers as given.
Salaray increase=$12-$10=$2
Therefore, the percentet increase can solve by the rule of 3
$10---------------100%
2$----------------- x
x=($2*100%) / $10=20%
her percent increase in pay was: 20%