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3 years ago

12

Alejandro bought a new refrigerator for $856 with a 25% discount and

2 answers:

Maurinko [17]3 years ago

8 0

Answer:

695.93

Step-by-step explanation:

75% of 856 is 642

642 + 53.93 = 695.93

6.3 = 53.93

oksano4ka [1.4K]3 years ago

7 0

Answer:

$695.94

Step-by-step explanation:

25% of 856 = 214

6.3% of 856 = 53.928

856 + 53.928 = 909.928

909.928 - 214 = 695.928 about 695.94

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34) Which equation is equivalent to: 3r=78+14 ?

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It’s B. (Note: The image below isn’t mine but I can assure you it is B)

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3 years ago

What are the zeros of the polynomial function f(x)=x^3-5x^2-6x ?

iren2701 [21]

Option C

The zeros of the polynomial function f(x) = x^3 - 5x^2 - 6x is x = 0 and x = -1 and x = 6

<h3><u>Solution:</u></h3>

Given that polynomial function is f(x) = x^3 - 5x^2 - 6x

We have to find the zeros of polynomial

To find zeros, equate the given polynomial function to 0. i.e f(x) = 0

$x^3 - 5x^2 - 6x = 0$

Taking "x" as common term,

$x(x^2 - 5x - 6) = 0$

Equating each term to zero, we get

$x=0 \text { and } x^{2}-5 x-6=0$

Thus one of the zeros of function is x = 0

Now let us solve $x^{2}-5 x-6=0$

We can rewrite -5x as -6x + x

$x^2 + x - 6x - 6 = 0$

Taking "x" as common from first two terms and -6 as common from next two terms

$x(x + 1) -6(x + 1) = 0$

Taking (x + 1) as common term,

(x + 1)(x - 6) = 0

x + 1 = 0 and x - 6 = 0

x = -1 and x = 6

Thus the zeros of given function is x = 0 and x = -1 and x = 6

3 0

3 years ago

Read 2 more answers

Calculate the discriminant and use it to determine how many real-number roots the equation has.

lakkis [162]

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4 0

3 years ago

Indicate in standard form the equation of the line passing through the given points, writing the answer in the equation

Kryger [21]

Answer:

$y + x - 6 = 0$

Step-by-step explanation:

Given

$M(0,6) \ and \ N(6,0)$

Required

Find the equation of the line

First, the slope of the line has to be calculated using the following formula;

$m = \frac{y_2 - y_1}{x_2 - x_1}$

$where\ (x_1,y_1) = (0,6) \ and \ (x_2,y_2) = (6,0)$

So, the equation becomes

$m = \frac{0 - 6}{6 - 0}$

$m = \frac{-6}{6}$

$m = -1$

The equation of the line can then be calculated using

$m = \frac{y - y_1}{x - x_1} \ or \ m = \frac{y - y_2}{x - x_2}$

$Using \ m = \frac{y - y_1}{x - x_1}$

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$-1 = \frac{y - 6}{x}$

Multiply both sides by x

$-1 * x = \frac{y - 6}{x} * x$

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Add x to both sides

$x -x = y - 6 + x$

$0 = y - 6 + x$

Reorder

$y + x- 6 = 0$

$Using \ m = \frac{y - y_2}{x - x_2}$

$-1 = \frac{y - 0}{x - 6}$

$-1 = \frac{y}{x - 6}$

Multiply both sides by x - 6

$-1 * (x-6) = \frac{y}{x - 6} * (x-6)$

$-1 * (x-6) = y$

$-x+6 = y$

Add x - 6 to both sided

$x - 6 -x+6 = y +x - 6$

$0 = y + x - 6$

$y + x - 6 = 0$

Hence, the equation of the line is $y + x - 6 = 0$

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3 years ago

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s344n2d4d5 [400]

Answer:

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