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levacccp [35]
3 years ago
11

Write the fractions as a percent. If neccisary, round to the nearest tenth of a percent For both.

Mathematics
1 answer:
butalik [34]3 years ago
8 0

9/15 as a percent is 60%, so D.

4 1/5 as a percent is 420%,  so B.

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DerKrebs [107]

we are given

differential equation as

y'''-9y''+20y'=0

we are given

y=e^{rx}

Firstly, we will find y' , y'' and y'''

those are first , second and third derivative

First derivative is

y'=re^{rx}

Second derivative is

y''=r*re^{rx}

y''=r^2e^{rx}

Third derivative is

y'''=r^2*re^{rx}

y'''=r^3e^{rx}

now, we can plug these values into differential equation

and we get

r^3 e^{rx}-9r^2 e^{rx}+20re^{rx}=0

now, we can factor out common terms

e^{rx}(r^3 -9r^2 +20r)=0

we can move that term on right side

(r^3 -9r^2 +20r)=0

now, we can factor out

r(r^2 -9r +20)=0

r(r-5)(r-4)=0

now, we can set them equal

r=0

r-5=0

r=5

r-4=0

r=4

so, we will get

r=0,4,5...............Answer

4 0
3 years ago
What is the constant term in the expansion of the binomial (x − 2)^4?
Marianna [84]

Answer:

the answer is a i think





3 0
3 years ago
A cafe offers senior citizens a 15% discount off its regular price of $8.95 for the dinner buffet.
jonny [76]

a) 75 percent of the regular price is the price for senior citizens.

b) $6.712 is the price for senior citizens.

<u>Step-by-step explanation</u>:

  • The regular price is the 100% = $8.95
  • The offer price for senior citizen = 15% discount from 100%

∴ Percent of the regular price for senior citizens = 100% - 15% = 75%

The price for the senior citizens = 75% of $8.95

⇒ (75/100)\times8.95

⇒ 0.75\times8.95

⇒ 6.712 dollars.

∴ The price for senior citizens = $6.712

7 0
3 years ago
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Dennis_Churaev [7]
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7 0
2 years ago
In 56 years ,Kevin will be 9 times as old as he is right now.<br><br> How old is he right now?
m_a_m_a [10]

Answer:

7

Step-by-step explanation:

5 0
3 years ago
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