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Vedmedyk [2.9K]
4 years ago
11

Is -2.75 greater than -2.5 please explain your answer

Mathematics
1 answer:
Anuta_ua [19.1K]4 years ago
6 0
No its not because in negative numbers -2.75 is less because you're trying to get back to zero so no its not
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K=-12 my work of how I found it
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What is the slope of a line that goes through the points (4,1) and (2,5)
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3 years ago
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Answer:

C

Step-by-step explanation:

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y=ax^2+bx+c

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y(2)=4\Rightarrow 4=a\cdot 2^2+b\cdot 2+c\\ \\y(1)=7\Rightarrow 7=a\cdot 1^2+b\cdot 1+c\\ \\y(3)=7\Rightarrow 7=a\cdot 3^2+b\cdot 3+c

We get the system of three equations:

\left\{\begin{array}{l}4a+2b+c=4\\ \\a+b+c=7\\ \\9a+3b+c=7\end{array}\right.

Subtract these equations:

\left\{\begin{array}{l}4a+2b+c-a-b-c=4-7\\ \\9a+3b+c-a-b-c=7-7\end{array}\right.\Rightarrow \left\{\begin{array}{l}3a+b=-3\\ \\8a+2b=0\end{array}\right.

From the second equation:

b=-4a

Substitute it into the first equation:

3a-4a=-3\\ \\a=3

So,

b=-4\cdot 3=-12

and

3+(-12)+c=7\\ \\c=7+9=16

The quadratic function is

y=3\cdot x^2-12x+16

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3 years ago
QUICK WHAT IS 3 2/5X 2 1/3
mote1985 [20]

Answer: 119/15 = 7 14/15

7 0
3 years ago
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