Mathematics
An arithmetic progression (A.P.) has 3 as its first term. The sum of the first 8 terms is twice the sum of the first 5 terms. Find the common difference of the A.P.
Related Questions
The table given below shows the runs scored by a cricket team during the overs of a match.
Overs Runs scored 20-30 37 30-40 45 40-50 40 50-60 60 60-70 51 70-80 35 (a) Draw a histogram representing the above distribution.
(b) Estimate the modal runs scored.
The roots of the equation (q - r)x2 + (r - p)x + (p - q) = 0 are equal.
Prove that : 2q = p + r, that is, p, q and r are in A.P.
A car travels a distance of 72 km at a certain average speed of x km per hour and then travels a distance of 81 km at an average speed of 6 km per hour more than its original average speed. If it takes 3 hours to complete the total journey then form a quadratic equation and solve it to find its original average speed.