Ask a New Question

Question

a certain positive number is equal to nine-tenths of the sum of the number and its reciprocal. find the number
8 years ago

Answers

Reiny
(9/10)x + 1/x = x
times 10
9x + 10/x = 10x
times x
9x^2 + 10 = 10x^2
x^2 = 10
x = √10

check:
1/√10
= 1/√10 *√10/√10 = √10/10
so
(9/10)√10 + 1/√10
= (9/10)√10 + √10/10
= 10√10/10 = √10
8 years ago

Related Questions

let s be a positive number. Solve the following equation for x. √a^3√a^4√a^3=a^x Let a be a positive number. If the product abc is negative, which statement must be true? A. bc... one positive number is 14 less than another positive number. if the reciprocal of the smaller number... One positive number is one-fifth of another number. The difference between the two numbers is 160,... One positive number is two more than a second number their product is 168 one positive number is 32 less than another number. if the reciprocal of the smaller number is added... If r is a positive number and s is a negative number, all of the following must represent positive n... Does every positive number have a matching negative number? For any positive number h , what is the solution to the inequality 61 ≤ 114 − h x ?...
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use