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Sedaia [141]
2 years ago
5

Jack and Serena can write a lab report together in 12 hours. If all people work at the same rate, how many hours would it take t

o write a lab report if Kay joins Jack and Serena?
Mathematics
1 answer:
Softa [21]2 years ago
5 0
The answer would be 4 hours because 12/3 is 4
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Oh my goodness . . .

What do you get when you multiply a number by itself ?
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Is it the number inside the square root ?

For just a second, let's take the quantity (4t - 3) and call it ' Q '.
Then the problem is to multiply
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Roberto is dividing his baseball cards equally between himself, his brother, and his 3 friends. Roberto was left with 9 cards. H
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Complete the table of values from left to right for the quadratic function
Lapatulllka [165]

Answer:

The values of y are -33 , -15 , -5 , -5 ⇒ answer C

Step-by-step explanation:

* We will use the substitution method to solve the problem

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- The values of x are -5 , -3 , -1 , 2

- We will substitute the values of x in the equation to find the

  values of y

# At x = -5

∵ y = -x² + x - 3

∵ x = -5

∴ y = -(-5)² + (-5) - 3 = - 25 - 5 - 3 = -33

∴ y = -33

# At x = -3

∵ y = -x² + x - 3

∵ x = -3

∴ y = -(-3)² + (-3) - 3 = - 9 - 3 - 3 = -15

∴ y = -15

# At x = -1

∵ y = -x² + x - 3

∵ x = -1

∴ y = -(-1)² + (-1) - 3 = - 1 - 1 - 3 = -5

∴ y = -5

# At x = 2

∵ y = -x² + x - 3

∵ x = 2

∴ y = -(2)² + (2) - 3 = - 4 + 2 - 3 = -5

∴ y = -5

* The values of y are -33 , -15 , -5 , -5 ⇒ from left to right

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