Write √80 in the form c√5, where c is a positive integer.

Firstly, we recall that √ab=√a x √b. Noticing that 80=16 x 5 then, we have that √80=√16 x √5. Since √16 = 4 then, we have that √80=4 x √5. So, giving the final answer in the form that the question asks: c=4, which is a positive integer (positive means greater than zero, integer means whole number, i.e. not a fraction or decimal).

Answered by Tutor524731 D. Maths tutor

6716 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

The point A lies on the curve with equation y=x^0.5. The tangent to this curve at A is parallel to the line 3y-2x=1 . Find an equation of this tangent at A. [5 marks]


What are the necessary conditions for a random variable to have a binomial distribution?


Find the area enclosed by the curve y = 3x - x^2 and the x-axis


Find the indefinite integral of sin(x)*e^x


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