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4 years ago

Multiply each polynomial (x - 7)(x - 4)

Mathematics

1 answer:

german4 years ago

8 0

Answer:2x+28 100% right

Step-by-step explanation:

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How do you write 5 18/1000 as a decimal.

Katena32 [7]

The correct way to write 5 18/1000 as a decimal is

5.018

5 is a whole number so the decimal would go after the 5.

6 0

4 years ago

A) 18c^2 – 2(3c – 1)^2 <br>В) (2a +3)(a −3) – 2a(4 – 6a)<br>С) (2x + 3)(3 —2x) - (2x – 5)^2 –10x

Galina-37 [17]

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====================================

Sorry,

For a), 18c^2 - 18c^2 = 0

Not = 36c^2

6 0

3 years ago

Find a formula for the nth partial sum of the series and use it to find the series' sum if the series converges.

Arisa [49]

Answer: $S_n=5(1-\dfrac{1}{n+1})$ ; 5

Step-by-step explanation:

Given series : $[\dfrac{5}{1\cdot2}]+[\dfrac{5}{2\cdot3}]+[\dfrac{5}{3\cdot4}]+....+[\dfrac{5}{n\cdot(n+1)}]$

Sum of series = $S_n=\sum^{\infty}_{1}\ [\dfrac{5}{n\cdot(n+1)}]=5[\sum^{\infty}_{1}\dfrac{1}{n\cdot(n+1)}]$

Consider $\dfrac{1}{n\cdot(n+1)}=\dfrac{n+1-n}{n(n+1)}$

$=\dfrac{1}{n}-\dfrac{1}{n+1}$

⇒ $S_n=5\sum^{\infty}_{1}\dfrac{1}{n\cdot(n+1)}=5\sum^{\infty}_{1}[\dfrac{1}{n}-\dfrac{1}{n+1}]$

Put values of n= 1,2,3,4,5,.....n

⇒ $S_n=5(\dfrac{1}{1}-\dfrac{1}{2}+\dfrac{1}{2}-\dfrac{1}{3}+\dfrac{1}{3}-\dfrac{1}{4}+......-\dfrac{1}{n}+\dfrac{1}{n}-\dfrac{1}{n+1})$

All terms get cancel but First and last terms left behind.

⇒ $S_n=5(1-\dfrac{1}{n+1})$

Formula for the nth partial sum of the series :

$S_n=5(1-\dfrac{1}{n+1})$

Also, $\lim_{n \to \infty} S_n = 5(1-\dfrac{1}{n+1})$

$=5(1-\dfrac{1}{\infty})\\\\=5(1-0)=5$

4 0

3 years ago

jorge took a speed reading class last saturday from 9 am to 4 pm. he learned that he can speed read 330 pages of a novel in one

garri49 [273]

Answer:

1hr = 60min

225min/ 60min = 3.75 hr

330 pgs. * 3.75hr = 1237.5 pages

He read 1237.5 pages in 225 minutes.

7 0

3 years ago

Expression A: X+3 Expression B: 1 + x + 2 Which statement can be used to show that these expressions are equivalent?

mariarad [96]

Answer:

The expressions name the same number regardless of the value of x

Step-by-step explanation:

4 0

3 years ago

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