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belka [17]
3 years ago
11

Helppp and explain pls and ty

Mathematics
1 answer:
zhenek [66]3 years ago
6 0
The answer should be c 4 hours
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X<br>81** *34*=246<br><img src="https://tex.z-dn.net/?f=81x%20%2B%201%20%2B%203%7B4x%20%7D%20%3D%20246" id="TexFormula1" title="
anzhelika [568]

Answer:

x=\frac{1}{4}

Step-by-step explanation:

81^{x+1}+3^{4x}=246

81=3^4

Rewrite equation: 3^{4\left(x+1\right)}+3^{4x}=246

3^{4\left(x+1\right)}=3^{4x}\times 3^4

3^{4x}\times 3^4+3^{4x}=246

Factor out 3^{4x}:

3^{4x}\left(3^4+1\right)=246

Divide both sides by (3^4+1):

\frac{3^{4x}\left(3^4+1\right)}{3^4+1}=\frac{246}{3^4+1}

3^{4x}=\frac{246}{3^4+1}

3^{4x}=\frac{246}{82}

3^{4x}=3

Anything to the power of 1 is itself. Hence,

4x=1\\

x=\frac{1}{4}

3 0
3 years ago
The movement of the progress bar may be uneven because questions can be worth more or less (including zera
kakasveta [241]

Answer:

600

Step-by-step explanation:

Because the tens digit is less than 5, round down to 600

5 0
2 years ago
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I wish to have $10,000 at the end of 8 years in a bank offering a simple interest rate of 7.5% per year. How much should I depos
cluponka [151]

Answer:

$6250

Step-by-step explanation:

6250x.075x8=3750

6250+3750=10,000

7 0
3 years ago
Please help I give Brainllest, stars, and hearts!
Neporo4naja [7]

Answer is in screenshot. Can I now have Brainliest?

6 0
3 years ago
Your parents put $500 into an account paying 7 percent interest for you when you were ten. ten years later they tell you that yo
dsp73
The answer is $983.58
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3 years ago
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