3 years ago

Find the system: y=3x^2 y=x^3-x^2

Mathematics

1 answer:

Maurinko [17]3 years ago

5 0

Answer:

See image below

Step-by-step explanation:

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If x+y = z and y−z=x which of the following must be equal to z?

umka21 [38]

ANSWER

EXPLANATION

We have two equations:

The first one is

$x + y = z...(1)$

The second equation is

$y - z = x...(2)$

Let us make z the subject of this second equation:

$\implies \: -x +y = z...(3)$

We now add equation (1) and (3) to get:

$(-x + x) + (y + y) = z + z$

We simplify to get:

$0+2y= 2z$

$2y= 2z$

Divide throu by 2.

$\frac{2y}{2} = \frac{2z}{2}$

$y= z$

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The correct answer is C

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4 years ago

Consider the original triangle and the enlargement, 2 cm 8 cm 3 cm

AURORKA [14]

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