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Mamont248 [21]
2 years ago
15

Sally works at a store.

Mathematics
1 answer:
Ilya [14]2 years ago
8 0

Answer:

Y is greater than or equal to 1/2x + 20

Y is less than or equal to 2/3x + 80

X is greater than or equal to 1200

X is less than or equal to 1850

Step-by-step explanation:

trust

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Determine between which consecutive integers the real zeros of y(x) = x2 - 4x – 2 are located.
Sholpan [36]

Answer:

The zeros are x1=4.45 and x2=-0.45.

x1 is between 4 and 5.

x2 is between -1 and 0.

Step-by-step explanation:

We have the function:

y(x) = x2 - 4x-2

As this is a quadratic function, we can calculate the zeros of the function with the quadratic equation:

x_{1,2}=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\\\x=\dfrac{-(-4)\pm\sqrt{(-4)^2-4\cdot 1\cdot(-2)}}{2\cdot 1}\\\\\\x=\dfrac{4\pm\sqrt{16+8}}{2}\\\\\\x=\dfrac{4\pm\sqrt{24}}{2}\\\\\\x=\dfrac{4\pm4.9}{2}=2\pm2.45\\\\\\x_1=2+2.45=4.45\\\\x_2=2-2.45=-0.45

The zeros are x1=4.45 and x2=-0.45.

x1 is between 4 and 5.

x2 is between -1 and 0.

7 0
3 years ago
Read 2 more answers
What is the answer to 8-x=3x
Andrew [12]
Move the 8 over
-x=3x-8
Move the 3x over
-x-3x=8
-4x=8
Divide by -4
x=-2
8 0
3 years ago
Read 2 more answers
Use transformations to solve the equation.<br><br><br><br> e – 14.4 = –20.8
murzikaleks [220]
E = -20.8 + 14.4
     = 6.4
8 0
3 years ago
What is the sum of all the integers between square root of 12 and 52? I need to know now pls!
Alexxx [7]

Answer: 7&8

Step-by-step explanation:

5 0
3 years ago
NEED HELP, DUE TODAY!!!
ch4aika [34]
Oh u got oddseyware lol i hat that wish i could help u dont have the suggestions bro
6 0
3 years ago
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