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sleet_krkn [62]
3 years ago
15

(4^7/5^2)^3 plz help

Mathematics
2 answers:
diamong [38]3 years ago
4 0

Answer:

281474976.711

Step-by-step explanation:

Wittaler [7]3 years ago
4 0

Answer:

\frac{281474976711}{1000}

Step-by-step explanation:

Follow PEMDAS:

Parenthesis

Exponent

Multiply

Divide

Addition

Subtraction

Parenthesis is the first operation:

(4^7/5^2)

Solve exponents:

4^7 = 16,384

5^2 = 25

(16,384 / 25)

655.36

Exponents:

655.36^3 = 281,474,976.711

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Verizon [17]
You can convert (1/625) to an exponent, and it would be ideal to have 5 as the base of it because you want your log base to cancel it out. what i usually do in this case is just test out 5^1, 5^2, etc until i find one that matches the number i need. in this case because the number you're trying to work with is a small fraction, you'll want to use NEGATIVE exponents so it'll create a fraction instead of a large whole number:

5^-1 = 1/5
. . . keep trying those. . .
5^-4 = 1/625

so, because they're equal to one another, it'll be waaay easier after you substitute 5^-4 in place of 1/625

x = log₅ 5⁻⁴

log base 5 of 5 simplifies to 1. subbing in the 5^-4 gets rid of the log for you altogether, and your -4 exponent drops down:

x = -4 is your answer

if the exponent dropping down doesn't make sense to you, you can think of it in another way:

x = log₅ 5⁻⁴

expand the expression so that the exponent moves in front of the log function:

x = (-4) log₅ 5

then, still, log base 5 of 5 simplifies to 1, so you're left with:

x = (-4)1 or x = -4
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3 years ago
Those are the answer choices! ^
dybincka [34]

Answer:

I think its c bc (PEMDAS) shoes multiplication comes first

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Compare using &gt;, &lt;, or =.<br><br> 3 miles_5,000 yards
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