3 years ago

If y = 2x + 1, what is y when x = 3?

Mathematics

2 answers:

ivann1987 [24]3 years ago

5 0

Answer:

x=3

y=2x+1

y=2(3)+1

y=6+1

y=7

docker41 [41]3 years ago

5 0

Answer:

Step-by-step explanation:

y=2x+1 x=3

y=2(3)+1

y=6+1

y=7

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Use long division to find the quotient below. (4x3 + 2x2 + 50) / (2x+5)

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Answer:

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Step-by-step explanation:

(4×3+2×2+50)÷(2×5)=

(12+4+50)÷(10)=

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Long division should look something like this:

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mash [69]

Answer:

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Step-by-step explanation:

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3 years ago

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A survey found that the American family generates an average of 17.2 pounds of glass garbage trash each year. Assume the standar

SIZIF [17.4K]

Answer: 0.8137

Step-by-step explanation:

As per given , we have

$\mu= 17.2\ ,\ \sigma=2.5$

Sample size : n= 47

Let $\overline{X}$ be the sample mean o.

Then, the probability that the mean of a sample of 47 families will be between 16.6 and 17.6 pounds will be :

$P(16.6$

$=P(-1.645$

[∵ $z= \dfrac{\overline{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}$ ]

$=P(z$

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Hence, the probability that the mean of a sample of 47 families will be between 16.6 and 17.6 pounds= 0.8137

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4 years ago