Answer:
Step-by-step explanation:
Adding 2a to both sides
Taking sqrt on both sides
Answer: x = 5/7
Step-by-step explanation:
The numerator is the power, while the denominator is the index (thing next to radical).
9. <span>1.25 = (1 x 1) + (2/10) + (5/100)
11. is ---C----</span>
Answer:
Yes
Step-by-step explanation:
First, suppose that nothing has changed, and possibility p is still 0.56. It's our null hypothesis. Now, we've got Bernoulli distribution, but 30 is big enough to consider Gaussian distribution instead.
It has mean μ= np = 30×0.56=16.8
standard deviation s = √npq
sqrt(30×0.56×(1-0.56)) = 2.71
So 21 is (21-16.8)/2.71 = 1.5494 standard deviations above the mean. So the level increased with a ˜ 0.005 level of significance, and there is sufficient evidence.
I believe it should be 36.00$
Since the court is 9 meters wide we would have to multiply that by 4 because each meter is 4$
