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Xelga [282]
3 years ago
7

(4x – 5)(7 – 2x) – (2x + 2)(2 – 4x)= -1

Mathematics
1 answer:
JulsSmile [24]3 years ago
8 0

Answer: x= 19/21.

Step-by-step explanation:

We can expand the expression to:

28x - 8x^2 - 35 + 10x -4x + 8x^2 - 4 + 8x = -1

We can then cancel the - 8x^2 and the + 8x^2 and simplify further by adding like terms:

38x - 35 + 4x -4 = -1 --> 42x - 39 = -1

We can then add 39 on both sides:

42x = 38

We can then divide both sides by the GCF (greatest common factor), 2:

21x = 19

We divide both sides by 21:

x = 19/21

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sveticcg [70]

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4 years ago
#7 I don't know how to solve this
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3 years ago
The equation that matches this diagram is<br> 4(z + 1.1) = 20.8 . What is the value of Z.
abruzzese [7]

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7 0
3 years ago
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Alex73 [517]
Using the formula
A = Pe^kt
Where A is the ending amount of population, P is the population k is a constant and 't' is time.

A = 0.39, t= 12 and p= 0.29
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