3 years ago

9

Mathematics

1 answer:

hammer [34]3 years ago

8 0

answer: 150 ( 20 / 100 ) = £30

20% can also be written as 20 / 100 as percent means ‘per hundred.’ just multiply that with your number !

alternatively

10% = 150 / 10 = 15

20% = 15 * 2 = £30

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Solve the Method of variation of Parameters. y" - 3y' + 2y = 4e^3t

kirill [66]

Answer:

CF+PI= $c_1e^{2x}+c_2e^{x}$ + $2e^{3t}$

Step-by-step explanation:

we have given y"-3y'=2y= $4e^{3t}$

this differential equation solution have two part that CF and PI

CALCULATION OF CF :

$m^2-3m+2=0$

$m^2-2m-m+2=0$

$(m-1)(m-2)=0$

m=1 and m=2

so CF= $c_1e^{2x}+c_2e^{x}$

CALCULATION OF PI :

PI = $\frac{4e^{3t}}{(m-1)(m-2)}$

at m= 3 in PI

$PI=\frac{4e^{3t}}{2}=2e^{3t}$

so the complete solution is

CF+PI= $c_1e^{2x}+c_2e^{x}$ + $2e^{3t}$

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You have 4 in 52 (4/52) chance that the first card is a jack and a 3 in 51 (3/51) chance the second card is a jack

Multiply the two
4/52 x 3/51
1/13 x 1/17
1/221

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The bait shop sells boxes of worms for fishing. The shop has 7 boxes left. There are 13 worms in each box.

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91 worms. 7 boxes multiplied by 13 worms per box equals 91 worms left in the shop

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Answer: - ∞

Step-by-step explanation:

As x approaches 4 from the positive side, the denominator gets closer to zero and the numerator gets closer to -2

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½[-12)

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