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2 years ago

0.5x + 4 + 0.9x = x + 5

Mathematics

2 answers:

Law Incorporation [45]2 years ago

6 0

Answer:

x=2.5

Step-by-step explanation:

kozerog [31]2 years ago

5 0

Answer:

$0.5x + 4 + 0.9x = x + 5$

collect like terms together:

$0.5x + 0.9x - x = 5 - 4 \\ x(0.5 + 0.9 - 1) = 1 \\ 0.4x = 1 \\ x = \frac{1}{0.4} \\ \\ { \boxed{ \boxed{x = 2.5}}}$

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What is the radius of the circle ? (X-3^2+(y-4)^2=49

vodomira [7]

Answer:

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Step-by-step explanation:

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Right now, we see that r^2 = 49, so to find r, we square root 49 and get 7.

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2 years ago

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GarryVolchara [31]

Answer:

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Step-by-step explanation:

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$P (X = 4) = {8 \choose 4} (0.53) ^ {4} (0.47)^4} = 0.2695$

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Step-by-step explanation:

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Answer:

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