Question

A train travel 1441/2 km in 17/2 hours. find the speed of the train in km per hour?

Answer 1

$\huge\green{\mid{\fbox{{คภรฬєг⤵}}\mid}}$

The distance covered is km. The time taken is hours. Therefore, Speed of the train is 85 km/hr.

$\huge\fbox\red{hσpє}\huge\fbox\pink{ít}\fbox\green{hєlp}\huge\fbox\blue{yóû}$

$\huge\fbox{\red{\underline{mαrk \; mє \; вrαínlíєѕt \; plєαѕє ♥}}}$

$\large\bf{\underline\blue{❥thαnk \; чσu ♥♥}}$

Answer 2

Step-by-step explanation:

we multiply

√2(√5-√7)

=√2×√5-√2×√7

=√10-√14