3 years ago

Write each percent as a fraction in simplest form. 2 2/5%=

Mathematics

1 answer:

gogolik [260]3 years ago

3 0

Answer:

2 2/5

Step-by-step explanation:

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Isabella works at Baker's Book company. If she earned a commission of $63.75 on her sales of $850, what was Isabella's rate of c

Westkost [7]

Rate = 63.75/850=.075*100%= 7.5%

7.5% is Isabella's rate of commission.

8 0

3 years ago

I will give brainliest, Please help on this... Show ur work please and thank you

Elanso [62]

Answer:

n=9

Step-by-step explanation:

-5-4n=-41

+5 +5

---------------

-4n=-36

---------------

-4n/4=-36/-4

---------------

n=9

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3 years ago

X×9=y, y-70=11 , y=?

solmaris [256]

Answer:

y=81

Step-by-step explanation:

x=9 and y=81

y-70=11 (add 70 onto 11)

y=81

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2 years ago

Read 2 more answers

Solve the following recurrence relation: <br> <img src="https://tex.z-dn.net/?f=A_%7Bn%7D%3Da_%7Bn-1%7D%2Bn%3B%20a_%7B1%7D%20%3D

-Dominant- [34]

By iteratively substituting, we have

$a_n = a_{n-1} + n$

$a_{n-1} = a_{n-2} + (n - 1) \implies a_n = a_{n-2} + n + (n - 1)$

$a_{n-2} = a_{n-3} + (n - 2) \implies a_n = a_{n-3} + n + (n - 1) + (n - 2)$

and the pattern continues down to the first term $a_1=0$ ,

$a_n = a_{n - (n - 1)} + n + (n - 1) + (n - 2) + \cdots + (n - (n - 2))$

$\implies a_n = a_1 + \displaystyle \sum_{k=0}^{n-2} (n - k)$

$\implies a_n = \displaystyle n \sum_{k=0}^{n-2} 1 - \sum_{k=0}^{n-2} k$

Recall the formulas

$\displaystyle \sum_{n=1}^N 1 = N$

$\displaystyle \sum_{n=1}^N n = \frac{N(N+1)}2$

It follows that

$a_n = n (n - 2) - \dfrac{(n-2)(n-1)}2$

$\implies a_n = \dfrac12 n^2 + \dfrac12 n - 1$

$\implies \boxed{a_n = \dfrac{(n+2)(n-1)}2}$

4 0

2 years ago

Please help i don’t understand this

sergij07 [2.7K]

yes it does have enough to cover the cube

8 0

3 years ago