Answer:
$63
Step-by-step explanation:
<em>I believe you meant Richard worked for 7 </em><em>hours</em> and made $9 per hour.
In order to know how much Richard earned for 7 hours, you have to <u><em>multiply Richard's salary rate with his number of working hours.</em></u>
- 7 hours x 9 dollars/hour = $63
Therefore, Richard earned $63 for his 7-hour work.
<u>Additional Information</u>
Another example is: if Richard worked for 10 hours, you just have to multiply his salary rate again to his number of working hours.
- 10 hours x 9 dollars/hour = $90
Answer:
Type I error: The correct option is (C).
Type II error: The correct option is (D).
Step-by-step explanation:
The type-I-error is the probability of rejecting the null hypothesis when the null hypothesis is true.
The type-II-error is the probability of filing to reject the null hypothesis when in fact it is false.
The hypothesis in this problem can be defined as follows:
Null hypothesis (H₀): The percentage of adults who have a job is equal to 88%.
Alternate Hypothesis (Hₐ): The percentage of adults who have a job is different from 88%.
The type-I-error in this case will be committed when we conclude that the percentage of adults who have a job is different from 88% when in fact it is equal to 88%.
The type-II-error in this case will be committed when we conclude that the percentage of adults who have a job is equal to 88% when in fact it is different than 88%.
Answer:
49 cupboards
Step-by-step explanation:
See the steps below, it is self-explanatory:
- 4 men ⇒ 4 days ⇒ 4 cupboards
- 4 men ⇒ 1 day ⇒ 1 cupboard
- 1 man ⇒ 1 day ⇒ 1/4 cupboard
- 14 men ⇒ 1 day ⇒ 14/4 cupboards
- 14 men ⇒ 14 days ⇒ 14*14/4 cupboards
As 14*14/4= 49, the answer is 49 cupboards
Answer:
make a graphical representation for our case do we have infinite lines pass through a point M?
Step-by-step explanation:
If the graphs of the equations do not intersect (for example, if they are parallel), then there are no solutions that are true for both equations. If the graphs of the equations are the same, then there are an infinite number of solutions that are true for both equations.
