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3 years ago

Simplify (0.5x -4) - (1.5+2.3)

Mathematics

2 answers:

lisov135 [29]3 years ago

8 0

0.5x -4 - 3.8

0.5x-7.8

IgorC [24]3 years ago

6 0

Answer:

0.5x−7.8

Step-by-step explanation:

Let's simplify step-by-step.

0.5x−4−(1.5+2.3)

Distribute the Negative Sign:

=0.5x−4+−1(1.5+2.3)

=0.5x+−4+(−1)(1.5)+(−1)(2.3)

=0.5x+−4+−1.5+−2.3

Combine Like Terms:

=0.5x+−4+−1.5+−2.3

=(0.5x)+(−4+−1.5+−2.3)

=0.5x+−7.8

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3 years ago

Read 2 more answers

How do you solve this

AlladinOne [14]

Answer:

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Step-by-step explanation:

Rewrite the equation as a single exponential. After taking the log, the solution becomes obvious.

$5^{x-2}-7^{x-3}=7^{x-5}+11\cdot 5^{x-4}\\\\5^{x-2}-11\cdot 5^{x-4}=7^{x-3}+7^{x-5}\\\\5^{x-2}(1-11\cdot 5^{-2})=7^{x-3}(1+7^{-2})\\\\5^{x-2}\dfrac{14}{25}=7^{x-3}\dfrac{50}{49}\\\\1=\dfrac{2\cdot 7^{x-3}5^4}{2\cdot 5^{x-2}7^3}=\left(\dfrac{7}{5}\right)^{x-6}\\\\0=(x-6)\log(1.4)\\\\x=6$

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