Answer:
y=-2
Step-by-step explanation:
The formula for inverse variation is
xy =k
if y=7 when x=-2, we can substitute these numbers in to find k
(-2)(7) =k
-14 =k
The equation becomes
xy = -14
Let x =7
7y = -14
Divide each side by 7
7y/7 = -14/7
y = -2
Answer:
Step-by-step explanation:
you do reverse so 1,721 - 999 = k
1,721 - 999 = 722
so k = 722
Answer:
10% of 2,000=200
Step-by-step explanation:
The mistake she make was that she used the wrong kind of math to get the answer
Good evening ,
______
Answer:
*Perimeter = 9+9+12,7=30,7
*Area=40,5
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Step-by-step explanation:
Look at the photo below for the answer.
:)
Answer:
True
Step-by-step explanation:
Suppose you have a quadratic function

Factoring this expression results in:

Where h and k are real numbers.
Then the function is equal to 0 when
and when
.
Therefore h and k will always be the solutions when we have the quadratic function factored in the form
Since we have ensured that the factors of the function contain only real numbers, then h and k are real numbers, and x and y must also be real numbers. Therefore solutions to an equation in this form will always be real solutions.
The statement is true