Most likely it's D because you are squaring both at the same time, and then you add them.
-5 is the base of -5g in this expression
Solution :
Given :
Sample mean,
Sample size, n = 40
Standard deviation, s = 83.2
∴ The null hypothesis is
Alternate hypothesis is
Test statistic :
z = 0.813
Now at α = 0.05, for a right tailed,
Since, , we fail to reject the null hypothesis.
<span>(y - 3x) • (4x + 3y)</span>