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3 years ago

Write an equation to determine the selling price in dollars, , on an item that is originally priced dollars after a

Mathematics

1 answer:

Studentka2010 [4]3 years ago

6 0

X = original cost

Y = Marked down cost

0.85x = y

Here's why:

When multiplying by percentages, what you multiply by is what is left over so 0.15x is incorrect because that would mean you marked it down by 85%!

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HELP PLS ITS ALGEBRA 1

Georgia [21]

Answer:

$- \frac{2}{6}$

Step-by-step explanation:

Use distributive property to simplify both sides.

$\frac{1}{6} (1 - 6x) = - \frac{1}{3} ( 6x + \frac{1}{2} )$

Use the Golden Rule of Algebra: (What we do to one side, we must do to the other).

$\frac{1}{6 } - x = - 2x - \frac{1}{6}$

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

$\frac{2}{6 } = - x$

$x = - \frac{2}{6}$

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3 years ago

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3 years ago

Find BC. Round to the nearest tenth

melamori03 [73]

Use the law of sines; see the attached picture.

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4 years ago

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A = bh/2 solve for b

rjkz [21]

$A = \dfrac{bh}{2}$

Cross multiply:
$2A = bh$

Divide by h on both sides:
$b = \dfrac{2A}{h}$

8 0

3 years ago

Question 2

Scrat [10]

Answer:

The inverse of the function is;

x = (y + 2)/3

Step-by-step explanation:

Here in this question, we shall be calculating the inverse of a function.

The function is;

y = 3x - 2

Firstly, let w = x;

y = 3w -2

y + 2 = 3w

w = (y + 2)/3

Now replace w by x

x = (y + 2)/3

This is the inverse of the function

7 0

3 years ago