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3 years ago

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In January, Music Marathon priced all the compact discs (CD’s) at $20. In February, these same CD’s were discounted 50% and in M

arch they were reduced an additional 10%. What was the price of one CD after both discounts?

1 answer:

skad [1K]3 years ago

3 0

Answer:I think it would be $9

Step-by-step explanation:

50% of 20 is $10

10% of $10 is $1

Subtract 1 from 10, which gives you $9

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Find an equation for the line with the given properties. Perpendicular to the line x - 6y = 8; containing the point (4,4) O 1) y

Pepsi [2]

Answer:

Option 3 - $y=-6x+28$

Step-by-step explanation:

Given : Perpendicular to the line $x - 6y = 8$ ; containing the point (4,4).

To Find : An equation for the line with the given properties ?

Solution :

We know that,

When two lines are perpendicular then slope of one equation is negative reciprocal of another equation.

Slope of the equation $x - 6y = 8$

Converting into slope form $y=mx+c$ ,

Where m is the slope.

$y=\frac{x-8}{6}$

$y=\frac{x}{6}-\frac{8}{6}$

The slope of the equation is $m=\frac{1}{6}$

The slope of the perpendicular equation is $m_1=-\frac{1}{m}$

The required slope is $m_1=-\frac{1}{\frac{1}{6}}$

$m_1=-6$

The required equation is $y=-6x+c$

Substitute point (x,y)=(4,4)

$4=-6(4)+c$

$4=-24+c$

$c=28$

Substitute back in equation,

$y=-6x+28$

Therefore, The required equation for the line is $y=-6x+28$

So, Option 3 is correct.

8 0

3 years ago

110% of 90 is what number a?

Rudik [331]

Well 1 percent is 0.9, so an easy way to work it out:
100(0.9)=90
10(0.9)=9
90+9=99.

5 0

3 years ago

Read 2 more answers

Describe the graph of the function. y = |x + 2|

charle [14.2K]

A chart would include

x, y

-2, 0

-1, 1

0, 2

1, 3

2, 4

The graph would look like this (Image attached)

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3 years ago

Which is the equation in the graph?

kompoz [17]

Answer:

D) y = 3x-2

Step-by-step explanation:

The y-intercept is (0,-2). This means that in y-mx+b, b is going to by -2. We know the slop is 3 because if I choose 2 points and move ONE unit to the right, it is increasing by 3. Also, you can do y1-y2/x1-x2, or y2-y1/x2-x1.

Please tell me if this is wrong and hope this helps :)

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3 years ago

Suppose the linear cost function C(x) = 6x gives the cost for buying x items. If the items are sold in packages of 10, and no on

abruzzese [7]

The range of x is:<span>10≤x≤50</span> The range of C is:<span><span>60≤C≤300</span></span>

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3 years ago