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True [87]
3 years ago
10

Simplify 8.9 - 1.4x + (-6.5x) + 3.4

Mathematics
1 answer:
lesya692 [45]3 years ago
8 0

Answer:

12.3 - 7.9x

Step-by-step explanation:

8.9 - 1.4x + (-6.5) +3.4

12.3 - 1.4x - 6.5=

12.3 - 7.9x

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Answer:

x = 14.4

Step-by-step explanation:

Similar means that the figures are proportional to each other. Because of this, we can form a problem. \frac{9}{5} (the short side lengths) = \frac{x}{8} (the long side lengths). Now we can solve this by cross-multiplying. If we multiply 9 · 8 we get 72, and 5 · x is 5x. 72 = 5x. Now divide both sides by 5. 72 ÷ 5 = 14.4. Therefore, x should be equal to 14.4. Does this make sense?

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Answer:

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Step-by-step explanation:

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1. 5 less than one fourth of x is y.
horsena [70]

Answer

y = (1/4)x - 5                 or     4y - x + 20 = 0

Explanation

To get the rule required, we interpret the sentence and write it in a mathematical form.

5 less than one fourth of x is y  

one fourth of x ⇒ (1/4)x

5 less than one fourth of x is y  ⇒  (1/4)x - 5 = y

y = (1/4)x - 5

4y = x - 20

4y - x + 20 = 0

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