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timama [110]
3 years ago
7

Find the vertex of y=-x²-4x+12

Mathematics
1 answer:
raketka [301]3 years ago
6 0
The vertex is (-2, 16)
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Midpoint of (1,3) and (4,-5)
crimeas [40]

Answer:

The rigth answer is, ( 5/2 , -1 )

Step-by-step explanation:

To find the midpoint we use the respective formula:

m = ( x1 + x2 / 2 ,  y1 + y2 / 2 )

We replace:

m = ( 1 + 4/2  ,  3 + (- 5) / 2 )

We solve:

m = ( 5/2 ,  -1 )

5 0
3 years ago
Solve this system of equations:<br><br><br><br> What is the value of x?
Ipatiy [6.2K]

Answer:

2

Step-by-step explanation:

Substitute y=2x in the first equation into the second.

The second equation then becomes;

x = -(2x)+6

x = -2x+6

Collectiing like terms, more -2x to the left,

x+2x =6

3x=6

x=\frac{6}{3}

x= 2

7 0
3 years ago
What is the sum of −4x+1 and 6x−5 ?<br><br> 10x + 6<br><br> 2x−4<br><br> −2x+6<br><br> I don't know.
creativ13 [48]
2x-4

-4 + 6 is 2 so 2x
1 + -5 is -4
5 0
3 years ago
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Which list shows these numbers in order from least to greatest?
ira [324]

Answer:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15...

3 0
4 years ago
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elena-s [515]

Answer:

12 in

Step-by-step explanation:

the scale factor of the enlarged frame is found by comparing the widths

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That is 3 times the original width , then

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