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Naddik [55]
2 years ago
15

A football player gained 1200 yards last season and 900 yards this season. Find the percent of change. Is this an increase or de

crease
Mathematics
1 answer:
Leni [432]2 years ago
5 0
It decreased by 300 so the percentage is probably 3.0%
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What does x stand for in 4+x=3x
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Find the volume of a sphere with radius 2ft
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33.51

Step-by-step explanation:

4/3π × 2³

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Write an inequality for the given statement: The sum of x and 25 is less than 75.
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4 0
3 years ago
Complete the square x^2-10=16<br><br>​
Hatshy [7]

Answer:

(x - 5)² = 41

Step-by-step explanation:

* Lets revise the completing square form

- the form x² ± bx + c is a completing square if it can be put in the form

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# The completing square is x² ± bx + c = (x ± h)²

# Remember c must be positive because it is = h²

* Lets use this form to solve the problem

∵ x² - 10x = 16

- Lets equate 2h by -10

∵ 2h = -10 ⇒ divide both sides by 2

∴ h = -5

∴ h² = (-5)² = 25

∵ c = h²

∴ c = 25

- The completing square is x² - 10x + 25

∵ The equation is x² - 10x = 16

- We will add 25 and subtract 25 to the equation to make the

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∴ x² - 10x + 25 - 25 = 16

∴ (x² - 10x + 25) - 25 = 16 ⇒ add 25 to both sides

∴ (x² - 10x + 25) = 41

* Use the rule of the completing square above

- Let (x² - 10x + 25) = (x - 5)²

∴ (x - 5)² = 41

3 0
3 years ago
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