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Liula [17]
3 years ago
15

Find the sum (8m+7)+(9c-3)+(2x+1). Simplify your answer.​

Mathematics
1 answer:
matrenka [14]3 years ago
6 0

Answer:

9 c  +  8 m  +  2 x  +  5

Step-by-step explanation:

Add and subtract the like terms and you'll get the answer I gave you.

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I NEED HELP!! please show all work
PtichkaEL [24]

Take the logarithm of both sides. The base of the logarithm doesn't matter.

4^{5x} = 3^{x-2}

\implies \log 4^{5x} = \log 3^{x-2}

Drop the exponents:

\implies 5x \log 4 = (x-2) \log 3

Expand the right side:

\implies 5x \log 4 = x \log 3 - 2 \log 3

Move the terms containing <em>x</em> to the left side and factor out <em>x</em> :

\implies 5x \log 4 - x \log 3 = - 2 \log 3

\implies x (5 \log 4 - \log 3) = - 2 \log 3

Solve for <em>x</em> by dividing boths ides by 5 log(4) - log(3) :

\implies \boxed{x = -\dfrac{ 2 \log 3 }{ 5 \log 4 - \log 3 }}

You can stop there, or continue simplifying the solution by using properties of logarithms:

\implies x = -\dfrac{ \log 3^2 }{ \log 4^5 - \log 3 }

\implies x = -\dfrac{ \log 9 }{ \log 1024 - \log 3 }

\implies \boxed{x = -\dfrac{ \log 9 }{ \log \frac{1024}3 }}

You can condense the solution further using the change-of-base identity,

\implies \boxed{x = -\log_{\frac{1024}3}9}

5 0
3 years ago
I dont understand this
Reil [10]
U basically solve: (4sqrt8)*2 + (5 sqrt 12 + 6 sqrt 20)*2
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aleksandrvk [35]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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Thanks for the points.
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Answer:

should be "d" though i haven't calculated it all exactly

Step-by-step explanation:

A : 85

B : 83

C : 82

D : 81

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3 years ago
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