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Elden [556K]
3 years ago
12

Solve 7x - 9 = 28 + 4(x - 1). A X = -11 B x = 11 C X = 3 D x=-3

Mathematics
2 answers:
Mariulka [41]3 years ago
7 0
It’s B I just used a calculator to it :)
frozen [14]3 years ago
3 0
Answer is A. X= 11
Have a good day
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3 years ago
The lengths of the sides of a rectangle are 18cm by 3m. Express the area of the rectangle in square decametres.
lubasha [3.4K]

For this case we have that by definition, the area of a rectangle is given by:

A = b * h

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h: It is the height of the rectangle

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1 centimeter equals 0.001 decameters

According to the data of the statement we have:

b = 18 \ cm * \frac {0.001} {1} * \frac {decametres.} {cm} = 0.018 \ decameters.\\h = 3m * \frac {0.1} {1} * \frac {decameters} {m} = 0.3 \ decameters.

Thus, the area of the rectangle is:

A = 0.018 * 0.3 = 0.0054 \ decameters ^ 2

Answer:

0.0054 \ decameters ^ 2

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4 years ago
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Answer:

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Step-by-step explanation:

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