Express 21/root7 in the form k root7.

21/root 7 = 21root7/7 = 3root7

k = 3

AW
Answered by Ally W. Maths tutor

6320 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

The Volume of a tin of radius r cm is given by V=pi*(40r-r^2-r^3). Find the positive value of r for which dV/dr=0 and find the value of V for this r.


Differentiate cos(2x)/(x) with respect to x


Intergrate 8x^3 + 6x^(1/2) -5 with respect to x


Differentiate with respect to x: 3 sin^2 x + sec 2x


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences