9.8 - 4.5 = _______ meters
The friend is swimming below the surface of the water so it's -5.8 meters.
4.5—9.8= -5.3
this is your answer
Answer:
figure it out yourself
Step-by-step explanation:
learn more
Answer:
m<ADE = 57 degrees
Step-by-step explanation:
Angles of a quadrilateral add up to 360. We are already given 69 and 45, which can both be subtracted from 360, leaving us with 246. Since the two remaining angles are congruent, 246 can be divided by 2 to find the remaining measure(s). We are left with 123. However, m<ADE is supplementary to this. So we subtract 123 from 180. The final answer is 57 degrees.
(1 × 10) + (2 × 10) + (3 × 10) =
10 + 20 + 30 = 60 different ways.
Answer:
See below
Step-by-step explanation:
Let
and
be the average age of population 1 (men) and 2 (women) respectively.
The correct hypothesis would be
<u>Null Hypothesis</u>
![\bf H_0: \mu_1=\mu_2](https://tex.z-dn.net/?f=%20%5Cbf%20H_0%3A%20%5Cmu_1%3D%5Cmu_2)
<u>Alternative Hypothesis</u>
![\bf H_a: \mu_1>\mu_2](https://tex.z-dn.net/?f=%20%5Cbf%20H_a%3A%20%5Cmu_1%3E%5Cmu_2)
It is worth noticing that in order to be able to make the hypothesis test it is necessary to know:
- The approximate data distribution of ages from population 1 and 2 (which is oftentimes a Normal distribution in these kind of sociological studies)
- The standard deviation of population 1 and 2. Since this is almost always impossible to determine in very large populations, then an estimation of the standard deviation together with the sample size used to determine it is required.
- The level of confidence required to asses the hypothesis. The most common ones are 90%, 95%and 99%