Find the sum of the first 20 terms of the sequence -7-3, 1, ......

Similar Questions

If →PQ = -2i + 5j and →RQ = -i - 7j, find →PR ...

Evaluate $\log_{0.25} 8$...

Marks 2 3 4 5 6 7 8 No of students 5 7 9 6 3 6 4 The table above sho...

If $\alpha$ and $\beta$ are the roots of the equation $2x^{2} - 6x + 5 = 0$, evaluate \(\frac{...

In a firing contest, the probabilities that Kojo and Kwame hit the target are $\frac{2}{5}$ and \(...

The mean age of 15 pupils in a class is 14.2 years. One new pupil joined the class and the mean chan...

P, Q, R, S are points in a plane such that PQ = 8i - 5j, QR = 5i + 7j, RS = 7i + 3j  and PS = x...

QRS is a triangle such that $\overrightarrow{QR} = (3i + 2j)$ and \(\overrightarrow{SR} = (-5i + 3...

Find the standard deviation of the numbers 3,6,2,1,7 and 5. ...

A particle of mass 2.5 kg is moving at a speed of 12 m/s. If a force of magnitude 10 N acts against ...