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Ivahew [28]
3 years ago
15

Which graph represents 4x + 7y < -21

Mathematics
1 answer:
allsm [11]3 years ago
3 0

Answer:

C

Step-by-step explanation:

Since the sign is not \leq, and it is <, then you'd choose the option with the dotted line showing it isn't inclusive.

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Find the values of a and b such that x^2-x+5=(x-a)^2+b
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Answer:

a = 0.5 or 1/2

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Step-by-step explanation:

Step 1: Isolate <em>x</em>'s

x² - x = -5

Step 2: Complete the Square

x² - x + 1/4 = -5 + 1/4

(x - 1/2)² = -19/4

Step 3: Move everything to one side

(x - 0.5)² + 4.75

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Step-by-step explanation:

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The mass will alter with time as water is absorbed back into the crystals.

Step-by-step explanation:

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3 years ago
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Margarita [4]
<span>Angle T = Angle C, let them equal x

So x + x + 140 = 180

2x = 40

x = 20

So Angle T = 20 degrees </span>
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