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tino4ka555 [31]
3 years ago
7

Use the distributive property to clear the parentheses.

Mathematics
1 answer:
In-s [12.5K]3 years ago
3 0
-(a-14n+19) =
-a+14n-19
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Solve 77 = -7x using one step equations
fgiga [73]

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x=-11

Step-by-step explanation:

Divide both sides by -7, and you get -11

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A detective is called to the scene of a crime where a dead body has been found. She arrives at
Jlenok [28]

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3pm

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2 years ago
Find the approximate solution(s) to each of the following equations graphically. Use technology to support your
ser-zykov [4K]

Answer: x" = 5.69

Step-by-step explanation:

The graphic solution is attached.

Verifying the solution:

Existence condition: x > 0

2x - 4 = √x + 5

√x =2x - 4 - 5

√x =2x - 9 (²)

x = (2x - 9)²

x = 4x² - 36x + 81

4x² - 36x - x + 81 = 0

4x² - 37x + 81 = 0

Δ = -37² - 4.4.81 = 1369 - 1296 = 73

x = 37 ±√73/8                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          

x' = 3.55

x" = 5.69

checking:

2*3.55 - 4 = 3.1

√3.55 + 5 = 6.88 Its not the same ∴ 3.55 is not a solution

2*5.69 - 4 = 7.39

√5.69 + 5 = 7.39 ∴ it's the only solution

4 0
3 years ago
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She forgot to convert hrs to minutes, A.
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