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adell [148]
3 years ago
10

Solve for x: 3(x + 1)=2(x - 1)

Mathematics
2 answers:
blagie [28]3 years ago
8 0

Answer:

x=-5

Step-by-step explanation:

3(x + 1)=2(x - 1)

3x + 3 = 2x - 2

3x - 2x = -2 - 3

x = -5

Hope this helps!

AURORKA [14]3 years ago
4 0

Answer:

x=-5

Step-by-step explanation:

3(x + 1)=2(x - 1)

first u distribute

3x+3=2x-3

now u can either add or subtract 3 from both sides, i am going to add

3x+3+3 =2x-5+5

3x+6 = 2x

now u subtract 3x

3x-3x+5 = 2x-3x

5= -1x

now divide both sides by -1

x=-5

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The amount of calories consumed by customers at the Chinese buffet is normally distributed with mean 2885 and standard deviation
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Answer:

a.  X~N(2,885, 651)

b.  0.086291

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Step-by-step explanation:

a. -A normal distribution is expressed in the form X~N(mean, standard deviation).

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b. The probability that less than 2000 calories are consumed is calculated using the formula:

P(X

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P(X>x)=P(z>\frac{\bar X-\mu}{\sigma})\\\\=P(Z>\frac{5000-2885}{651})\\\\=P(z>3.2488)\\\\=1-0.99942\\\\=0.00058

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1% is equivalent to a z value of 0.50399.

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0.01=P(z>\frac{\bar X-\mu}{\sigma})\\\\=P(z>\frac{\bar X-2885}{651})\\\\\1\%=0.50399 \\\\\frac{\bar X-2885}{651}=0.50399 \\\\\bar X=0.50399\times 651+2885\\\\=3213.09

Hence, the least amount of calories consumed to qualify for the award is 3213.10 calories.

8 0
3 years ago
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Answer:

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Step-by-step explanation:

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