I think it would be the second question!
Answer:
Step-by-step explanation:
Use the inverse cosine function.
The answer is 13.1111111111. Hope this helps!
Answer:
b. 6 cm
Step-by-step explanation:
Q is the midpoint of PR, so QR = PR/2 = (12 cm)/2 = 6 cm
Regrouping in subtraction means that if you can't subtract because the digit on the bottom has a greater value than the digit on the top (such as 3-6)m so in this case you would have to regroup twice.
