pratyushpadhy00 pratyushpadhy00
  • 21-05-2018
  • Mathematics
contestada

Value of a varies directly as the square of the value of b, and b=3 when a=10. What is a when b=9?

Respuesta :

altavistard
altavistard altavistard
  • 21-05-2018
General equation:  a = k*b^2

Specifically:          10 = k*(3)^2 = 9 k

Solving for k:  k = 10/9

Then a = (10/9)b^2.    If b = 9, then a = (10/9)(9)^2 = 90 (answer)
Answer Link

Otras preguntas

At 4 seconds an object’s velocity is 22 meters per second at 8 seconds the object’s velocity is 39 meters per second assuming a constant acceleration what is th
How are these two equations related? (x^2-1)/(x+1)= x-1 and x^2-1=(x+1)(x-1)
Use the method from the Example to approximate the solution to the equations below to two decimal places. 6^x = 1,000
What is the equation of the line that passe throught the point (4, -6) and has a slope of -3
another one !!!!!!!!!!!!!!!!!!
Write 405,000 in scientific notation.
1. A line contains the points (−12,−60) and (60,− 42). What is the slope of the line in simplified form? PLEASE HELP QUICKLY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Giving two reasons,classify air as a mixture or compound.
If xx> 0, a + b > 0, a > b, and log(x) = log(a + b) + log(a − b), find x in terms of a and b.
what are advantages of public borrowing​