Recall that

where
is the angle between the vectors
whose magnitudes are
, respectively.
We have


Answer:
Simply count 4 × 6 =28
Step-by-step explanation:
Answer: 
Step-by-step explanation:
Given
Azmyne decided to study a total of 
She spent
on Friday and
on Saturday
Hours spent on Friday

Hours spent on Saturday

She must study for

Answer:
The conclusion is Mr. Keene has sufficient vitamin K.
Step-by-step explanation:
Consider the provided statement.
The law of detachment involves two quantities, one is hypothesis and another is conclusion.
In the provided statement hypotheses and conclusion is:
Hypotheses (P): Person has insufficient vitamin K
Conclusion (Q): There will be a prothrombin deficiency.
Here if a person has insufficient vitamin K that means there must be prothrombin deficiency, but if a person has prothrombin deficiency we can't say anything.
Now it is given that Mr. Keene does not have a prothrombin deficiency.
That means he has sufficient vitamin K
Hence, the conclusion is Mr. Keene has sufficient vitamin K.
The required diagram is shown in figure.