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dmitriy555 [2]
2 years ago
15

What is the value of b 2b + 8 − 5b + 3 = −13 + 8b − 5

Mathematics
2 answers:
eimsori [14]2 years ago
8 0

Step-by-step explanation:

2b-5b+8+3 = - 13 - 5 +5b

-3b + 11 = -18 +5b

11+18 = 5b + 3b

29 = 8b

29/8 = b

3.625 = b

Yuri [45]2 years ago
3 0

Answer:

See below.

Step-by-step explanation:

2b + 8 − 5b + 3 = −13 + 8b − 5

Reorder like terms.

2b-5b+8+3=8b-13-5

Combine those like terms. Then solve.

-3b+11=8b-18

      -11       -11

-3b=8b-29

-8b -8b

-11b=-29

/-11    /-11

b=2.64

-hope it helps

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You can compute both the mean and second moment directly using the density function; in this case, it's

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Then the mean (first moment) is

E[X]=\displaystyle\int_{-\infty}^\infty x\,f_X(x)\,\mathrm dx=\frac1{80}\int_{670}^{750}x\,\mathrm dx=710

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The second moment is useful in finding the variance, which is given by

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You get the standard deviation by taking the square root of the variance, and so

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Area of rectangle is 2x^2+x-45

Step-by-step explanation:

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Putting values of length and width:

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Learn more about Area of rectangle at:

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