Answer:
45 km/hr
Explanation:
total distance = 90
Increased speed = x+15
90/x - 90/x+15=1/2
90(1/x - 1/x+15)=1/2
90(x+15-x/x^2+15x)=1/2
equation is:
x^2+15x-2700=0
x^2+60x-45x-2700=0
x(x+60)-45(x+60)=0
(x+60)(x-45)=0
x= -60, x=45
reject the negative value = -60
usual speed=45 km/ hr
Answer:
November 27th,1095.In 1905 he started preaching the first crusade(1905-1999). He promised forgiveness and pardon for all of the past sins for those who would fight to reclaim the holy Land from Muslims and free the Eastern churches.
Answer:
b. Palaniappan Chidambaram(born 16 September 1945) is an politician and former attorney who currently serves as Member of Parliament, Rajya Sabha and formerly served as the Union Minister of Finance and Union Minister of Home Affairs of India
Answer:
C
Explanation:
John Locke derived the belief that all knowledge comes from sense-experience
Competition is to challenge each other .
