Find the value of 2a - 4b - 5c when a-5- b-10 and c-20- nbsp-7535150120

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Value of an Algebraic Expression

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Question

Find the value of $2 a + 4 b + 5 c$ when $a = 5, b = 10$ and $c = 20.$

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120

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150

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If $2160 = 2^{a} . 3^{b} . 5^{c}$ , find a, b and c. Hence calculate the value of $3^{a} \times 2^{- b} \times 5^{- c}$

2 a + 4 b + 5 c

a = 5, b = 10

c = 20.

2 a + 4 b + 5 c, when a = 5, b = 10 a n d c = 20

2 a + 4 b + 5 c

a = 5, b = 10

c = 20.

2 a + 4 b + 5 c, w h e n a = 5, b = 10, c = 20

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