You can mow 2 acres of your field in an hour and

Mathematics

1 answer:

alekssr [168]3 years ago

8 0

Answer: I think the answer is 8hrs and 30 minuets

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Solve the following quadratic equation for all values of xx in simplest form. 16+2x²=30

Katarina [22]

Link Provided in other answer is a SCAM !!! Do NOT CLICK ON IT !!!

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3 years ago

This year, a small business had a total revenue of $45,000. If this is 25% less than their total revenue the previous year, what

morpeh [17]

Let R = total revenue the year before

R = 45,000 x 0.25 + 45,000

R = 11,250 + 45,000

R = $56,250

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3 years ago

Find the balance in the account.<br> $3,800 principal earning 2%, compounded annually, after 7 years

sineoko [7]

Answer:

A = $4360.515918 which rounded to the nearest penny is $4360.52

Step-by-step explanation:

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2 years ago

The half- life of 1-137 is 8.07 days.if 100 grams are left after 40.35 days, how much grams were in the original sample?

a_sh-v [17]

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Step-by-step explanation:

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3 years ago

Determine whether the series is absolutely convergent 1-(1*3/3! (1*3*5/5!-（3*5*7）

DENIUS [597]

It's not clear what your series is, so I'm going to take a wild guess on what it is you mean:

$1-\dfrac{1\times3}{3!}+\dfrac{1\times3\times5}{5!}-\dfrac{1\times3\times5\times7}{7!}+\cdots$
$=\displaystyle\sum_{n=1}^\infty\frac{(-1)^{n-1}}{(2n-1)!}\prod_{k=1}^n(2k-1)$

For the sum to be absolute convergent, the sum of the absolute value of the summand must converge, so you are really examining the convergence of

$\displaystyle\sum_{n=1}^\infty\frac1{(2n-1)!}\prod_{k=1}^n(2k-1)$

This is easily checked with the ratio test:

$\displaystyle\lim_{n\to\infty}\left|\frac{\displaystyle\dfrac1{(2(n+1)-1)!}\prod_{k=1}^{n+1}(2k-1)}{\displaystyle\dfrac1{(2n-1)!}\prod_{k=1}^n(2k-1)}\right|=\lim_{n\to\infty}\left|\frac{\dfrac{1\times3\times5\times\cdots\times(2n-1)\times(2n+1)}{(2n+1)!}}{\dfrac{1\times3\times5\times\cdots\times(2n-1)}{(2n-1)!}}\right|$
$\displaystyle=\lim_{n\to\infty}\left|\frac{\dfrac{2n+1}{(2n+1)(2n)}}{\dfrac11}\right|=\lim_{n\to\infty}\dfrac1{2n}=0$

Since $\sum|a_n|$ converges by the ratio test, the series $\sum a_n$ converges absolutely.

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2 years ago