A community for students.
Here's the question you clicked on:
 0 viewing
Regulators
 3 years ago
A student opens a mathematics book to two facing pages. The product of the pages is 420. Find the page numbers.
Regulators
 3 years ago
A student opens a mathematics book to two facing pages. The product of the pages is 420. Find the page numbers.

This Question is Closed

ravi623
 3 years ago
Best ResponseYou've already chosen the best response.2let the first page no be =x so the second page no will be =x+1 so (x+1)x=420 solve this equation for x, you will find the answer

Regulators
 3 years ago
Best ResponseYou've already chosen the best response.0Ok, ravi623. I come up with x^2=420x? But what do I do after this?, because x is negative do I need to make it positive first? 1(x420) instead?

ravi623
 3 years ago
Best ResponseYou've already chosen the best response.2factorize the the 420=21X20 (x+1)x=420 becomes x^2+x420=0, this becomes a quadratic equation so x^2+21x20x420=0 x(x+21)20(x+21)=0 (x20)(x+21)=0 so x=20, x=21 but no of pages can not be negative ,so x=20 is the right answer so first page no is 20 and other pages no is 20+1=21

Regulators
 3 years ago
Best ResponseYou've already chosen the best response.0Thank you, I understand
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.