q1717451 q1717451
  • 12-10-2017
  • Mathematics
contestada

What is the answer to this

Find y when x=9 if y varies directly as the square of x and y=245 when x=7

Respuesta :

altavistard
altavistard altavistard
  • 12-10-2017
The most general function here would be y = kx^2.
Let y=245 and x=7 to find the value of the constant of proportionality k:

245 = k(7)^2, or 49k = 245, or 5.

Then the specific function that applies here is y = 5x^2.
Answer Link

Otras preguntas

I need help with this question.
Which organization negotiates trade agreements, settles disputes, and enforces compliance among member nations? A. European Union B. NAFTA C. World Trade Organi
Which of the following statements does NOT describe the Dietary Guidelines? A. Guidelines promote healthy eating habits. B. Guidelines make allowances for dieta
Which is an accurate description of the Punic Wars? A. Greece became a province of Rome after being defeated in a series of wars. B. Rome became the dominant po
why does thunder usually occur during storms that have lighting
which format was used for movies of the 1910 and 1920
140 degrees decreased by 65%
If one charge is quadrupled, what happens to the force between charges?
How to make 36/10 as a decimal
what is 31/6 as an mixed number