Scholarship Exam Preparation App
Class 7 - (Math )
Number Work - Number line
If d(P, Q) = 12 cm, d(Q, R) = 8 cm and the sequence P-Q-R, how far from zero is the midpoint between P and R if point P is at -10?
a :
10
b :
0
c :
20
d :
2
Explanation :
P = -10. P-Q-R gives Q = -10+12 = 2 and R = 2+8 = 10. Midpoint of P(-10) and R(10) is 0