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AysviL [449]
3 years ago
14

Daniel buys a DVD at an electronics store. The DVD costs $24.35. Daniel hands the cashier two $20 bills. How much change did Dan

iel get?
Mathematics
2 answers:
Snezhnost [94]3 years ago
6 0
$15.25 is the answer I think
Fantom [35]3 years ago
5 0

Answer:

$15.65

Step-by-step explanation:

$20 + $20 = $40

$40 - $24.35 = $15.65

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I REALLY NEED HELP, ILL MEDAL!!!!
lara31 [8.8K]
Well, first of all, the first statement  (ABC = ADC) looks like it just says
that the two halves of the little square ... each side of the diagonal ...
are congruent.  That's no big deal, and it's no help in answering the
question.

The effect of the dilation is that all the DIMENSIONS of the square
are doubled ... each side of the square becomes twice as long.

Then, when you multiply (length x width) to get the area, you'd have

           Area = (2 x original length) x (2 x original width)

and that's
the same as      (2 x 2) x (original length x original width)

                        =     (4)  x  (original area) .


Here's an easy, useful factoid to memorize:

-- Dilate a line (1 dimension) by 'x' times . . . multiply the length by  x¹

-- Dilate a shape (2 dimensions) by 'x' . . . multiply area by  x²

-- Dilate a solid (3 dimensions) by 'x' . . . multiply volume by  x³

And that's all the dimensions we have in our world.
_______________________________

Oh, BTW . . .

-- Dilate a point (0 dimensions) by 'x' . . . multiply it by  x⁰  (1)

5 0
3 years ago
A fire truck parks 16 feet away from a building. The fire truck extends its ladder 30 feet to the very top of the building. How
Anvisha [2.4K]

Answer:

46 feet high!

Step-by-step explanation:

8 0
3 years ago
What is the focus of the parabola given the equation y=x^2+4x-1
IrinaK [193]
Let's first rewrite it in vertex form.
Start by completing the square.
y = x² + 4x + 4 - 4 - 1
y = (x + 2)² - 5
(x + 2)² = y + 5

Now, 4a = 1; a = \frac{1}{4}

So, the vertex form is (x + 2)² = 4(\frac{1}{4})(y + 5)
So, we know that the vertex is at (-2, -5).
Since it's a concave up parabola, we just have to change the y-value to find the focus.

∴ F(-2, -5 + \frac{1}{4})
F(-2, \frac{-19}{4})
3 0
3 years ago
11 more than five of a certain number is twenty more than 2 times of that number. what is the number?​
RUDIKE [14]

Answer:

Let the number be x

Given:  

11 + 5x = 20 + 2x

5x - 2x = 20 - 11

3x = 9

x = 3

The number is 3.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
4.5x67=<br> 6/5x78=? <br> 20-100=+3,000
mars1129 [50]
4.5x67=301.7
6/5x78=63.6
20-100+3000=2920
4 0
2 years ago
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