If ( 43.65 ) ( 8.79 ) / x = ( 0.4365 ) ( 87.9 ) then value of x is:

Mathematics

1 answer:

strojnjashka [21]3 years ago

5 0

Answer:

(d) 10

Step-by-step explanation:

Multiply by x and divide by its coefficient:

(43.65)(8.79) = (0.4365)(87.9)x

(43.65)(8.79)/((0.4365)(87.9)) = x

At this point, any calculator can give you the answer. It is, perhaps, more satisfying to work out the answer without a calculator.

x = (43.65)/(0.4365) × (8.79)/(87.9)

In the first quotient, the numerator is 100 times the denominator; in the second, the denominator is 10 times the numerator.

x = (100) × (1/10) = 100/10

x = 10

_____

Moving the decimal point to the right 1 place multiplies the numerical value by 10.

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