Answer: D) cube root of 16
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Explanation:
The rule we use is
![x^{m/n} = \sqrt[n]{x^m}](https://tex.z-dn.net/?f=x%5E%7Bm%2Fn%7D%20%3D%20%5Csqrt%5Bn%5D%7Bx%5Em%7D)
In this case, x = 4, m = 2 and n = 3.
So,
![x^{m/n} = \sqrt[n]{x^m}\\\\\\4^{2/3} = \sqrt[3]{4^2}\\\\\\4^{2/3} = \sqrt[3]{16}\\\\\\](https://tex.z-dn.net/?f=x%5E%7Bm%2Fn%7D%20%3D%20%5Csqrt%5Bn%5D%7Bx%5Em%7D%5C%5C%5C%5C%5C%5C4%5E%7B2%2F3%7D%20%3D%20%5Csqrt%5B3%5D%7B4%5E2%7D%5C%5C%5C%5C%5C%5C4%5E%7B2%2F3%7D%20%3D%20%5Csqrt%5B3%5D%7B16%7D%5C%5C%5C%5C%5C%5C)
Showing that the original expression turns into the cube root of 16.
Answer:
The gold price increase from 1935, when President FDR raised gold value to $35 per ounce, compared to today's spot gold value of $1,335 represents an increase of approximately $3,700%.
Answer:
A and D
Step-by-step explanation:
yes
+18. A square root always has two answers, a positive and a negative
Answer: 3.13; The regression line underpredicts the student's math test score.
Step-by-step explanation:
Given the equation of a regression model:
ŷ = −23.5 + 0.8534s,
where ŷ = predicted math score
s = IQ score
An actual math test score for a student is 73.5 with an IQ of 110.
Using the model to predict the score is f the student above ;
ŷ = −23.5 + 0.8534(110)
ŷ = −23.5 + 93.874
y = 70.374
Actual score = 73.5
Hence, since the actual score is greater Than the predicted score, then the model underpredicted the score by
Residual = actual - predicted = (73.5 - 70.374) = 3.126 = 3.13
