The answer is 0.4r=2.4.
The value of the **expression **0.4r when r = 6 is 2.4.
What is multiplication?
Multiplication is the **general **procedure in **mathematics **in which we multiply two or more numbers to each other to find a new **multiplied **number.
Given the expression ,
0.4r
At r = 6
0.4r = 0.4(6)
⇒ 2.4
Hence "The value of the **expression **0.4r when r = 6 is 2.4".
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The value of the expression 0.4 r when r = 6 is 2.4.
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From the first equation: ab = 18b. If b is not zero, we can divide both sides by b, resulting in a = 18.Substitute a into the second equation: If a = 18, then 18 + b = 27.Solve for b: Subtracting 18 from both sides gives b = 27 - 18, so b = 9.Therefore: a = 18 and b = 9.