Yashi1799
Yashi1799 Yashi1799
  • 23-08-2018
  • Mathematics
contestada

1:X = X:81 what number can replace X?

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 23-08-2018

Multiply 1/x = x/81 by 81x and you get

... 81 = x²

Taking the square root gives

... x = ±9

Either 9 or -9 can replace X to make the proportion statement true.

Answer Link

Otras preguntas

This figure represents an arrow painted on a walkway 12 times. What is the area of the walkway that is painted with the 12 arrows? 70 cm² 90 cm² 840 cm² 1080 cm
Given the following table, determine the matching representations.
Pip was thinking of a number. Pip adds 8.3 to the number, then doubles the result to get an answer of 59.1. Form an equation with a from the information.
Pablo jogs 1 1/3 miles from his house. He then jogs 2 1/8 miles farther. How many miles has Pavlo jogged in all?
what is e banking effects
What is the main idea of hitlers speech of the treaty of Versailles (April 17, 1923)
what is the distance between -25 and 15 on the number line?
what were some of the things the Nixon administration was involved in that shocked the American people?help help help​
Voters cast ballots in great numbers in a year when there is an election for _____________ The answer is President hope this helps
How do you do this?