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3 years ago

Find the value of x. log 3 x = 4 A.) 7 B.) 12 C.) 27 D.) 81

Mathematics

1 answer:

lakkis [162]3 years ago

8 0

Hello from MrBillDoesMath!

Answer:

Choice D, 81

Discussion:

By log 3x = 4 I presume that "3" is the base not a multiplier of x. Assuming it is the base, then the equation is equivalent to

x = 3^4

= 81

This is Choice D.

Thank you,

MrB

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3 years ago

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3 years ago

Read 2 more answers

Factor completely 2x^2 − 2x − 40.

zubka84 [21]

Step-by-step explanation:

Hey there!

Given;

$= 2 {x}^{2} - 2x - 40$

Solve it by using mid-term factorization.

$= 2 {x}^{2} - 2x - 40$

$= 2 {x}^{2} - (10 - 8)x - 40$

$= 2 {x}^{2} - 10x + 8x - 40$

Take common and simplify them to get answer.

$2x(x - 5) + 8(x - 5)$

$= (2x + 8)(x - 5)$

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Therefore the answer is option D.

Hope it helps..

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3 years ago