Answer:
3r^3/y^7.
Step-by-step explanation:
9y^-5 / 3y^2r^-3
9 / 3 = 3
y ^-5 / y^2 = y^-7 = 1 / 7y
1 / r^-3 = r^3
So the answer is 3r^3/y^7.
Answer:
2
Step-by-step explanation:

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Answer:
4/49
Step-by-step explanation:
7-5 = 2
2/7*2/7 = 4/49
Answer x2 g(x) ans: D
Step-by-step explanation:
Answer: 27.688
Step-by-step explanation:
The critical chi-square value
depends on significance level (
) and degrees of freedom (df) .
Given significance level: (
) = 1% = 0.01
Degrees of freedom (df)= 13
From the chi-square table, the critical chi-square value for df = 13 and 
is 
Hence, the required critical value = 27.688