Q. Solve for x, rounding to the nearest hundredth.4⋅25x=1Answer:
Isolate exponential term: First, we need to isolate the exponential term on one side of the equation. Since we are given 4⋅2x/5=1, we can divide both sides by 4 to get 2x/5=41.
Recognize fraction as negative exponent: Next, we recognize that 41 is 2−2 because 2−2=221=41. So we can rewrite the equation as 25x=2−2.
Set exponents equal: Since the bases are the same and the equation is an equality, we can set the exponents equal to each other. This gives us 5x=−2.
Multiply to isolate x: To solve for x, we multiply both sides of the equation by 5 to isolate x. This gives us x=−2×5.
Final solution: Multiplying −2 by 5 gives us x=−10.
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