Solved on Jan 29, 2024

Find the values of the variables dd, ee, and ff that make the given equations true: (2d)4=212\left(2^{d}\right)^{4}=2^{12}, 3575=e53^{5} \cdot 7^{5}=e^{5}, and 505f=545^{0} \cdot 5^{f}=5^{4}.

STEP 1

Assumptions
1. We are given three separate equations to solve for different variables: dd, ee, and ff.
2. The base of the exponents in each equation is a prime number.
3. We will use the properties of exponents to solve each equation.

STEP 2

Solve for dd in the equation (2d)4=212\left(2^{d}\right)^{4}=2^{12}.

STEP 3

Use the property of exponents that states (am)n=amn(a^{m})^{n} = a^{mn} to simplify the left side of the equation.
(2d)4=24d\left(2^{d}\right)^{4} = 2^{4d}

STEP 4

Set the exponents on both sides of the equation equal to each other since the bases are the same and the equation must hold true for all values.
4d=124d = 12

STEP 5

Divide both sides of the equation by 4 to solve for dd.
d=124d = \frac{12}{4}

STEP 6

Calculate the value of dd.
d=3d = 3

STEP 7

Now, solve for ee in the equation 3575=e53^{5} \cdot 7^{5}=e^{5}.

STEP 8

Use the property of exponents that states ambm=(ab)ma^{m} \cdot b^{m} = (ab)^{m} to combine the bases on the left side of the equation.
3575=(37)53^{5} \cdot 7^{5} = (3 \cdot 7)^{5}

STEP 9

Simplify the multiplication inside the parentheses.
(37)5=215(3 \cdot 7)^{5} = 21^{5}

STEP 10

Set the bases equal to each other since the exponents are the same and the equation must hold true for all values.
e5=215e^{5} = 21^{5}

STEP 11

Since the exponents are the same, we can equate the bases directly.
e=21e = 21

STEP 12

Lastly, solve for ff in the equation 505f=545^{0} \cdot 5^{f}=5^{4}.

STEP 13

Use the property of exponents that states a0=1a^{0} = 1 to simplify the left side of the equation.
505f=15f5^{0} \cdot 5^{f} = 1 \cdot 5^{f}

STEP 14

Simplify the multiplication.
15f=5f1 \cdot 5^{f} = 5^{f}

STEP 15

Set the exponents on both sides of the equation equal to each other since the bases are the same and the equation must hold true for all values.
f=4f = 4
The values of the variables that make each equation true are d=3d = 3, e=21e = 21, and f=4f = 4.

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