Evaluate :

 ∫2xcos(x2 – 5).dx

If the sum of 14 terms of an A. P is 1050 its first term is 10 find 20th term ?

Diagonals of a quadrilateral 30 cm long and the perpendicular drawn from the opposite vertices are 5.6 and 7.4 cm find the area of the quadrilateral.with  steps ?

Find the sum of the integers between 10 and 30 including 10 and 30 which are not divisible by 3.​

A cyclic quadrilateral pqrs are where PS equals to PQ and angle SPQ is 70 degree find angle psq

In a triangle ABC AB = 18 cm, BC = 8 cm, AC = 14 cm and D is middle point of AB, then CD equals to.

Find the perimeter of the given isosceles traingle.

A large number of buses stop at the bus stop at the end of old hall lane.The 42 bus stop there every 6 minutes,the 43 bus stops there every 8 minutes and the 45 bus stops at every 15 minutes.If all the buses stop at the old hall lane stop at 4.00pm, write down the total number of buses that will call at the stop between 4.20 and 4.50 pm.

(1-1/1) (1-1/2) (1-1/3) find the value?

An instrument store gives a 10% discount to all students off the original cost of an instrument. During a back to school sale an additional 15% is taken off the discounted price. Julie, a student at the local high school, purchases a flute for $306. How much did it originally cost?