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3 years ago

12

Make r the subject in the relation; rv= h

1 answer:

Vinil7 [7]3 years ago

5 0

Answer:

step by step

take v to divide

r=h/v

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Solve for homework :)

katrin2010 [14]

Answer:

$1) \frac{ {a}^{8} }{ {a}^{6} } \\ = {a}^{8} \times {a}^{ - 6} = {a}^{2} \\ 2) {m}^{2} {m}^{ - 4} = {m}^{ - 2} \\ thank \: you$

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2 years ago

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in a AP the first term is 8,nth term is 33 and sum to first n terms is 123.Find n and common difference

allsm [11]

I believe there is no such AP...

Recursively, this sequence is supposed to be given by

$\begin{cases}a_1=8\\a_k=a_{k-1}+d&\text{for }k>1\end{cases}$

so that

$a_k=a_{k-1}+d=a_{k-2}+2d=\cdots=a_1+(k-1)d$

$a_n=a_1+(n-1)d$

$33=8+(n-1)d$

$21=(n-1)d$

$n$ has to be an integer, which means there are 4 possible cases.

Case 1: $n-1=1$ and $d=21$ . But

$\displaystyle\sum_{k=1}^2(8+21(k-1))=37\neq123$

Case 2: $n-1=21$ and $d=1$ . But

$\displaystyle\sum_{k=1}^{22}(8+1(k-1))=407\neq123$

Case 3: $n-1=3$ and $d=7$ . But

$\displaystyle\sum_{k=1}^4(8+7(k-1))=74\neq123$

Case 4: $n-1=7$ and $d=3$ . But

$\displaystyle\sum_{k=1}^8(8+3(k-1))=148\neq123$

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3 years ago

I NEED HELP PLZ!!!! It’s important!

rewona [7]

Answer: 24x^3 sqrt5x -4x^3 sqrt10x

Step-by-step explanation:

Show in the photo attached.

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3 years ago

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the martin want to buy a new computer. the regular price is $632 . the store is offering a 25% discount and a sales tax of 7% is

lisov135 [29]

Answer:

440.82

Step-by-step explanation:

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3 years ago

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I NEED THE ANSWER NOWWWWWWWWWWWWWW

Verizon [17]

Answer:

I think it might be $123.75

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3 years ago