It will take 24 days for them to exercise together. You have to find a common number that both 8 and 12 go into evenly so 8x1=8, 8x2=16, 8x3=24 and 12x1=12, 12x2=24. So this will be Drew's third time at the gym and Sara's second time when they both go together
Answer:
The test statistic (z-score) of this one-mean hypothesis test is z=1.823.
Step-by-step explanation:
The null and alternative hypothesis are:
The significance level is 0.05.
The sample size is n=22.
The sample mean is M=157.
The standard deviation is 18.
The z-score can be calculated as:
The test statistic (z-score) of this one-mean hypothesis test is z=1.823.
Answer:
A reflex angle is an angle that is always bigger than 180 but smaller than 360. So for example 270 is a reflex angle.
Step-by-step explanation:
The answer to this question is sqrt(2)/2. Invoke the unit circle to derive this expression, or use special triangles and reference triangles.
Answer:
The question is not clearly stated, but I can correctly infer that you wanted to ask the question below:
Out of 150 members, 120 took part, what is the percentage of the total that took part:
Answer:
80%
Step-by-step explanation:
The question is asking us to find what percentage of 150 is 120
Let the percentage of 150 that is 120 be x
x % of 150 = 120
x/100 × 150 = 120
0.01x × 150 = 120
0.01x = 120 ÷ 150 = 0.8
x = 0.8 ÷ 0.01 = 80
∴ 120 = 80% of 150
