12-02-2018
Mathematics

contestada

Solve 5r2 – 12 = 68.

Respuesta :

tl12502 tl12502

12-02-2018

the solution to the equation is r= the square root of 56(b+2)

Answer Link

Аноним Аноним

12-02-2018

[tex]5r^{2} [/tex] - 12 = 68
[tex]5r^{2} [/tex] = 68 + 12
[tex]5r^{2} [/tex] = 80
[tex]r^{2} [/tex] = 80 ÷ 2
[tex]r^{2} [/tex] = 16
r = [tex] \sqrt{16} [/tex]
r = 4 or -4

So r = 4 or -4

Answer Link

Otras preguntas

what natural resources were available to Meso-America?

3/7 of what number is 9? How am I suppose to figure this out?

How do I write the equation of the line when using (-4,18)?

What Countries Have limited and unlimited governments?

Why do many different types of proteins exist even though there are a limited number of amino acids

A stadium can hold 20,000 people when it is full. The table below shows the number of people that attended concerts at the stadium over a 3-day period. Day Nu

please explain, I don't really get it

What two things must you know to find the momentum of an object? :( anyone?

I need help. I don't know how to solve the problem at all.

What is the complete predicate of the following sentence? Sharon and Jason went for a walk and then a bike ride.