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mixer [17]
3 years ago
12

PLEASE HELP 2 QUESTIONS 45 POINTS!!!!!!!!!

Mathematics
1 answer:
Effectus [21]3 years ago
5 0

Answer:

1. -8x² - 16x - 6      a = -8, b = -16, c = -6

1. 4x² - 1                  a = 4, b = 0, c = -1

Step-by-step explanation:

use the 'foil' method:

(4x + 2)(-2x - 3)

F: -8x²     O: -12x       I: -4x       L: -6

-8x² - 16x - 6

(2x + 1)(2x - 1)

F: 4x²     O: -2x       I: 2x       L: -1

4x² - 1

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The ratio of newspapers to magazines at the corner store is 9 to 5. Which combination of newpapers and magazines could the corne
neonofarm [45]

Answer:

9 newspapers and 5 magazines

18 newspapers and 10 magazines

27 newspapers and 15 magazines

36 newspapers and 20 magazines

45 newspapers and 25 magazines

54 newspapers and 30 magazines

63 newspapers and 35 magazines

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90 newspapers and 50 magazines

Step-by-step explanation:

You basically just have to follow this formula

9x newspapers and 5x magazines

x can equal literally any positive integer you want!

just make sure you multiply the 9 and the 5 by the same numebr to keep the ratio the same!

5 0
3 years ago
N/3 = 13;n =39 how do you solve is it a solution or equation???
77julia77 [94]

Answer:

n=9

Step-by-step explanation:

7 0
3 years ago
-5.225 as a mixed number.
gregori [183]

Answer:

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Step-by-step explanation:

3 0
3 years ago
Triangle ABC was dilated with the origin as the center of dilation to create triangle A'B'C'. The triangle was dilated using a s
victus00 [196]

Answer:

A'(-0.25,0.75)\\\\B'(1.75,-0.25)\\\\C'(-1,-0.25)

Step-by-step explanation:

A Dilation is defined as  a transformation in which the image and the pre-image have the same shape, but their sizes are different.

When the scale factor is greater than 1, the image obtained after the  dilation is greater than the pre-image and it is an "Enlargement".

When the scale factor is is between 0 and 1,  the image obtained after the  dilation is smaller than the pre-image and it is an "Reduction".

In this case you know that the triangle ABC was dilated by this scale factor:

scale\ factor=\frac{1}{4}

With the origin as the center of dilation.

Since:

0

It is a Reduction.

You can identify that the vertices of the triangle ABC are:

A(-1,3)\\\\B(7,-1)\\\\C(-4,-1)

So you need to multiply the coordinates of each vertex  of the triangle ABC by \frac{1}{4}, in order to get the coordinates of the triangle A'B'C. Then, you get:

A'=(\frac{1}{4}(-1),\frac{1}{4}(3))=(-0.25,0.75)\\\\B'(\frac{1}{4}(7),\frac{1}{4}(-1))=(1.75,-0.25)\\\\C'(\frac{1}{4}(-4),\frac{1}{4}(-1))=(-1,-0.25)

5 0
3 years ago
How to concert 347 to 10​
Rina8888 [55]

Answer:

<h2>340_{10}</h2>

Step-by-step explanation:

7 0
3 years ago
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