Respuesta :

mhanifa

Answer:

  • 4.9

Step-by-step explanation:

Given

x varies inversely with y², then the function is:

  • x = k/y²

x = 10, y = 7, find the value of k by substituting the values of x and y:

  • 10 = k/7²
  • 10 = k/49
  • k = 10*49
  • k = 490

The function is:

  • x = 490/y²

When y = 10, the value of x is:

  • x = 490/10² = 490/100 = 4.9
manissaha129

Answer:

Statement says that,

x varies inversely with y²

According to the above problem,we get

x=k/y², where k is a constant

Now, x=10 when y=7, so the value of k is

10=k/7²

k=10×7²

k=10×49

k=490

Hence, when y=10,

we have to find the value of x

So by putting the value of k, we get

x=490/(10)²

x=490/100

x=4.9

★ x=4.9 is the right answer.

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