3 years ago

When you are multiplying powers, what are you actually doing with the exponents?

2 answers:

8 0

If you have (3^4)^3 then you multiply the two exponents to get 3^12. if you have 3^4 x 3^3 then you add the exponents to get 3^7

wlad13 [49]3 years ago

3 0

Adding a zero 10 to the 4th power is 10000 you add how many zeros the power is

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Let y′′′−9y′′+20y′=0. find all values of r such that y=erx satisfies the differential equation. if there is more than one correc

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

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3 years ago

Jessica made $95 for 5 hours of work.

poizon [28]

Answer:

$247

Step-by-step explanation:

95/5= 19 to find rate per unit which means,

Jessica makes $19 dollars a hour.

19 x 13= $247

So Jessica made $247 in 13 hours of work.

8 0

3 years ago

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What are the slope and the y-intercept of the linear function that is represented by the graph?

earnstyle [38]

Answer:

The answer is c

Step-by-step explanation:

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3 years ago

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logan drov from new orland to nashvill to visit friends his speed limit is 60 miles per hour if logans driving for the trip was

Alina [70]

Answer:

540 miles

Step-by-step explanation:

60 times 9

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3 years ago

Triangle RST has vertices located at R (2, 3), S (4, 4), and T (5, 0).

hichkok12 [17]

Answer:im not sure

Step-by-step explanation:

8 0

1 year ago