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3 years ago

Find the equivalent expression by drawing a line from the left column to the right

Mathematics

1 answer:

Gala2k [10]3 years ago

6 0

Answer/Step-by-step explanation:

$2(3x - 1) = 2*3x 2*-1 = 6x - 2$

$(x*y)2 = (xy)2 = 2xy$

$2(2x - 3) = 2*2x 2*-3 = 4x - 6$

$3x + 4x + 2 = (3x + 4x) + 2 = 7x + 2$

$7x - 7 = 7(x) - 7(1) = 7(x - 1)$

$x(6 + 9) = x(15) = 15x$

$2 + 9x + 1 + 3x = (9x + 3x) + (2 + 1) = 12x + 3$

$4(x + 2) + x = 4x + 8 + x = 4x + x + 8 = 5x + 8$

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3 years ago

If 1 centimeter on the scale drawing represents 2 feet, what will be the diameter of Clarise's fish pond?

alexandr402 [8]

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4 years ago

Find the vertex of this parabola. y = -2x2 + 4x + 12

STatiana [176]

For this case we have the following equation:
$y = -2x ^ 2 + 4x + 12
$
Deriving we have:
$y = -2x ^ 2 + 4x + 12

y '= -4x + 4$
We match zero:
$-4x + 4 = 0
$
We clear the value of x:
$4x = 4

x = 4/4

x = 1$
Then, we substitute the value of x in the equation of the parabola:
$y = -2 (1) ^ 2 + 4 (1) + 12

y = -2 + 4 + 12

y = 14$
Thus, the vertex of the parabola is the ordered pair:
$(x, y) = (1, 14)$
Answer:
The vertice is:
$(x, y) = (1, 14)$

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3 years ago

Which expression is equivalent to -5(k + 3)?

lesantik [10]

Answer:

ubvuugvgbihijniphubhovuv

Step-by-step explanation:

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