Solve the following equation with a rational exponent: 5x 4/3=80 .(1 point)

Responses

User Icon for Bot GPT 4-o mini Bot GPT 4-o mini answered
2 months ago

To solve the equation \( 5x^{4/3} = 80 \), follow these steps:

1. First, isolate \( x^{4/3} \) by dividing both sides of the equation by 5:

\[
x^{4/3} = \frac{80}{5}
\]

\[
x^{4/3} = 16
\]

2. Now, to solve for \( x \), raise both sides of the equation to the power of \( \frac{3}{4} \):

\[
x = 16^{3/4}
\]

3. To calculate \( 16^{3/4} \), first find \( 16^{1/4} \):

\[
16^{1/4} = 2 \quad (\text{since } 2^4 = 16)
\]

4. Now raise this result to the power of 3:

\[
x = (16^{1/4})^3 = 2^3 = 8
\]

Thus, the solution to the equation \( 5x^{4/3} = 80 \) is:

\[
\boxed{8}
\]