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larisa [96]
3 years ago
5

Use the scale below to complete the sentence.

Mathematics
1 answer:
goblinko [34]3 years ago
5 0
21ft in yards equals 7 yards I hoped this helped!
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The function f(x) = (x − 4)(x − 2) is shown.What is the range of the function?
yuradex [85]

Answer:

The range is y ≥ -1

Step-by-step explanation:

∵ f(x) = (x - 4)(x - 2)

∴ f(x) = x² - 2x - 4x + 8

∴ f(x) = x² - 6x + 8 ⇒ quadratic function (ax² + bx + c) represented by

   parabola graphically

∵ a = 1 , b = -6 , c = 8

∴ x-coordinate of its vertex = -b/2a = -(-6)/2×1 = 3

∴ f(3) = (3)² - 6(3) + 8 = -1

∵ a is positive ⇒ the curve has minimum point and it's open upward

∴ the minimum point is (3 , -1)

∴ The range is y ≥ -1 ⇒ because the minimum value is -1

3 0
3 years ago
What value of x is in the solution set of 9(2x + 1) < 9x - 18? -4 -3 -2 -1​
Zanzabum

Answer:

what does -4,-3,-2,-1 implies?

6 0
2 years ago
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What is the coefficient in the following expression?
Y_Kistochka [10]
The coefficient is 4 because it is placed before x.
7 0
3 years ago
Parallel lines s and t are cut by a transversal, r, as shown
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Step-by-step explanation:

i just took the test and got a 100% :)

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3 years ago
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How old is david if his age 6 years from now will be twice his age 7 years ago?
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8 0
3 years ago
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