Answer:
The slope of the first line is 2/3, and y-intercept is 0
So if joeys frnd comes to joey's house, the line would have the slope of -2/3 and the y-intercept would be 80
The line would look like:
Hope this helps!
#A
We have to find 3% of 120000 and then final cost.



Now
Final cost=Cost-discount
Final cost=120000-3600=116400
#B
Final price=Cost-Rebate
Final price=120000-1500=118500
Answer:
Step-by-step explanation:
Approximately 95% of the population has IQ scores between 70 and 130. Approximately 99.7% of the population has IQ scores between 55 and 145. Only approximately 0.3% of the population has IQ scores outside of this interval (less than 55 or higher than 145).
Step-by-step explanation:
By Cosine rule, we have
s² = t² + u² - 2(t)(u)(cosS)
=> cosS = (t² + u² - s²)/2tu
=> cosS = (58² + 27² - 50²) / (2 * 58 * 27) = 0.5086.
Therefore S = cos^-1(0.5086) = 59.4° (1d.p.)
Answer:
decreases.
Step-by-step explanation:
Type II error is one in which we fail to reject the null hypothesis that is actually false. Null hypothesis is a statement that is to be tested against the alternative hypothesis and then decision is taken whether to accept or reject the null hypothesis. The power of Type II error is 1 -
. As the power increases the probability of Type II error decreases.