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drek231 [11]
2 years ago
11

Solve the question in the attached image.​

Mathematics
1 answer:
Greeley [361]2 years ago
3 0

9514 1404 393

Answer:

  1) 2/7√((x+3)^7) +C

  2) 2√(x+5) +C

Step-by-step explanation:

The power rule applies.

  ∫u^n du = u^(n+1)/(n+1)

1)

  \displaystyle\int{(x+3)^\frac{5}{2}}\,dx=\boxed{\dfrac{2}{7}(x+3)^\frac{7}{2}+C}

__

2)

  \displaystyle\int{(x+5)^{-\frac{1}{2}}}\,dx=\boxed{2(x+5)^\frac{1}{2}+C}

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the sum of the first n terms of a sequence is 20 - 10 / 2 ^ n - 1 find the sum of the first five terms​
Travka [436]

Answer:

S_5=\dfrac{170}{9}

Step-by-step explanation:

Given that,

The sum of first n term of a sequence isS_n=20-\dfrac{10}{2n-1}

We need to find the sum of the first 5 terms.

Put n = 5,

S_5=20-\dfrac{10}{2(5)-1}\\\\=20-\dfrac{10}{10-1}\\\\=20-\dfrac{10}{9}\\\\=\dfrac{170}{9}

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Answer:

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Step-by-step explanation:

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5(x-9)=5(\frac{3}{5}x)\\5x-45=\frac{5}{1} *\frac{3}{5}x\\5x-45=\frac{15}{5}x\\5x-45=3x

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2x=45

  • Divide both sides by 2.

x=\frac{45}{2}

  • If your teacher wants you to leave your final answer as an improper fraction, your final answer is this. If they want it to be a mixed number or decimal, your final answer will be:

x=22\frac{1}{2}=22.5

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