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damaskus [11]
1 year ago
14

Simplify (7y+4)(8y+2)

Mathematics
1 answer:
lesantik [10]1 year ago
6 0

Answer:

56y^2+46y+8

Explanation:

Hope this helps you.

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Let a and b be real numbers where ab+0. Which of the following functions could represent the graph below?
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O f(x) = x(x – b) 3

Step-by-step explanation:

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The answer is D

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That's the only equation will get us one point

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The ordered pair, (1,5) indicates the unit rate of books to cost on the graph shown. What does the point on the graph represent?
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The point on the graph represents that 2 books cost $10.
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Given 4x²=(3y-5z÷4)² ,find<br>x if y=x-2 and z=2y<br><br>​
rjkz [21]

Answer:

x = 2/5 or x = -2/3

Step-by-step explanation:

y = x - 2

z = 2y = 2(x - 2) = 2x - 4

4x² = (3y - 5z ÷ 4)²

Substitute y with x - 2. Substitute z with 2x - 4.

4x² = [3(x - 2) - 5(2x - 4) ÷ 4]²

16 * 4x² = [3(x - 2) * 4 - 5(2x - 4) ÷ 4 * 4]²

64x² = [12(x - 2) - 5(2x - 4)]²

64x² = (12x - 24 - 10x + 20)²

64x² = (2x - 4)²

64x² = 4x² - 16x + 16

60x² + 16x - 16 = 0

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ac = 15 * (-4) = -60

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15x² - 6x + 10x - 4 = 0

(15x² - 6x) + (10x - 4) = 0

3x(5x - 2) + 2(5x - 2) = 0

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5x = 2 or 3x = -2

x = 2/5 or x = -2/3

3 0
3 years ago
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