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3 years ago

11

on Tuesday 60 students went to a help session. on Wednesday 72 students went. what is the percent increase in the number of stud

ents who went to the help session

1 answer:

BartSMP [9]3 years ago

5 0

Answer:

20

Step-by-step explanation:

(72-60):60*100 =

(72:60-1)*100 =

120-100 = 20

Hope this helps :)

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2 years ago

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3 years ago

1) Use power series to find the series solution to the differential equation y'+2y = 0 PLEASE SHOW ALL YOUR WORK, OR RISK LOSING

iogann1982 [59]

If

$y=\displaystyle\sum_{n=0}^\infty a_nx^n$

then

$y'=\displaystyle\sum_{n=1}^\infty na_nx^{n-1}=\sum_{n=0}^\infty(n+1)a_{n+1}x^n$

The ODE in terms of these series is

$\displaystyle\sum_{n=0}^\infty(n+1)a_{n+1}x^n+2\sum_{n=0}^\infty a_nx^n=0$

$\displaystyle\sum_{n=0}^\infty\bigg(a_{n+1}+2a_n\bigg)x^n=0$

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We can solve the recurrence exactly by substitution:

$a_{n+1}=-\dfrac2{n+1}a_n=\dfrac{2^2}{(n+1)n}a_{n-1}=-\dfrac{2^3}{(n+1)n(n-1)}a_{n-2}=\cdots=\dfrac{(-2)^{n+1}}{(n+1)!}a_0$

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3 years ago

3. ms. Johnson placed two different orders with TR's special item store. each order was for 40 jars with the circus logo imprint

denis23 [38]

1.The height is 6 inches ad the width (diameter) is 3 inches!
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3 years ago

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Lesechka [4]

Answer:

x=28

Step-by-step explanation:

6(x+2)=180 Step 1: Write equation

6x+12=180 step 2: Expand the equation

6x=168 Step 3: Do 180-12 first

x=28 Step 4: Divide by 6 answer you got in Step 3

Step 5: replace 28 with x to see if it's correct 6(28+2)= 180

Put comment if answer is wrong and i will change my answer soon as possible

I hope this helps

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3 years ago

Read 2 more answers