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Algebraic Expressions II - JSS2 Mathematics Past Questions and Answers - page 2

11

Find the time taken for a car traveling at π‘₯ miles per hour to cover 100 miles.

Using the formula:

Time=Distance/Speed

Time=100/π‘₯

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12

A rectangle's width is 𝑀 and its length is 3𝑀+4. Find the perimeter.

The formula for the perimeter 

𝑃 of a rectangle is:

𝑃=2(Length+Width)

Substitute the given values:

𝑃=2((3𝑀+4)+𝑀)

=2(3𝑀+4+𝑀)

=2(4𝑀+4)

=8𝑀+8

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