3 years ago

NEED HELP ASAP. WILL GIVE BRAINLYIST.

1 answer:

5 0

Actual length = 3.5 × 120
actual length = 420 cm
actual length = 4.2 m

actual width = 2.5 × 120
actual width = 300 cm
actual width = 3 m

actual area = l × w
actual area = 4.2 × 3
actual area = 12.6 m²

the answer is b

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Use algebraic means to show that x^2 + y^2 = 8 is not a function. Explain your process.

11Alexandr11 [23.1K]

Answer:

For a single value of x function has more than one corresponding value of y which satisfies the equation.

Step-by-step explanation:

Function: A relationship between a set of inputs and a set of possible outputs, where exactly one output is associated with each input.

It means for an equation to represent a function any single value of x there should be only one corresponding value of y which satisfies the equation.

Now consider the given equation.

$x^2 + y^2 = 8$

If we put x=0 then we get two value of y i.e $\sqrt8$ and $-\sqrt8$ which satisfy the equation and therefore the equation is not a function.