Answer:
An hasn't received a letter from her friend since three weeks.
Answer:
Twice the radius
As with circles, the diameter of a sphere is twice the radius. C = πD or 2πr. As with circles, the circumference of a sphere is equal to π times the diameter. Since the diameter is twice the radius, we can also say that the circumference is twice the radius times π. V = (4/3)πr3
Explanation:
A sounds like a answer but don't let it fool you, same with C. B or D will most likely be your answer I would go with D
The correct answer is: C: The sentence has a compound subject. Subject in sentence is<span> the person or thing about whom the statement is made. Every verb in sentence must have at least one subject. But that doesn't mean that it is the only possibility: namely, the verb can have more than one subject, too. In such cases, we can say that a sentence has a compound subject. In this sentence: "Conrad and his sister will sing a duet in the concert.", compound subject is: "Conrad and his sister", since the statement is about the both of them.</span>
