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3 years ago

Help pleas brainliest promised if right

Mathematics

2 answers:

SVEN [57.7K]3 years ago

5 0

Answer:

Step-by-step explanation:

Kaylis [27]3 years ago

5 0

1300 times .06= 78
Answer:$78

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How much simple interest would Kaitlin earn on $300 at 6% for 3 months?

faust18 [17]

Answer:

C) $54.00

Step-by-step explanation:

300*6%*3

300*0.06*3

which is $54.

Hope this helps plz hit the crown :D

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3 years ago

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John paints 2 portraits in 8 hours, 3 portraits in 12 hours, and 5 portraits in 20 hours. Which statement correctly describes th

nika2105 [10]

We can see that John paints at a constant rate: therefore, the correct statement that describes this situation is that John likes to paint.

Haha got you, the correct answer is John paints 1 portrait every 4 hours.

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3 years ago

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Inverse laplace of L^-1 {5s/s^2 + 3s - 4}

Salsk061 [2.6K]

Answer:

$e^t+e^{-4t}$

Step-by-step explanation:

We have to simplify the original function using partial fraction, hence:

$\frac{5s}{s^2+3s-4} =\frac{5s}{(s-1)(s+4)}\\\\=\frac{A}{s-1}+\frac{B}{s+4}\\\\Therefore:\\\\\frac{A(s+4)+B(s-1)}{(s-1)(s+4)}=\frac{5s}{(s-1)(s+4)}\\\\Eliminating\ the \ denominator:\\\\A(s+4)+B(s-1)=5s\\\\substitute\ s=1:\\\\A(1+4)+B(1-1)=5(1)\\\\5A=5\\\\A=1\\\\tsubstitute\ s=-4:\\\\A(-4+4)+B(-4-1)=5(-4)\\\\-5B=-20\\\\B=4\\\\Therefore\ substituting\ A\ and\ B\ gives:\\\\\frac{5s}{s^2+3s-4}=\frac{1}{s-1}+ \frac{4}{s+4}\\\\$

$From\ Laplace\ inverse:\\\\But\ L^{-1}[\frac{1}{s-a} ]=e^{at}\\\\Hence:\\\\L^{-1} [\frac{5s}{s^2+3s-4}]=L^{-1}[\frac{1}{s-1} ]+L^{-1}[\frac{4}{s+4} ]=e^{t}+4e^{-4t}\\\\L^{-1} [\frac{5s}{s^2+3s-4}]=e^{t}+4e^{-4t}$

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3 years ago

What is the answer to this? 40d = 160. What is d?

Sholpan [36]

Answer:

d=4.

Step-by-step explanation:

160/40=4, therefore d=4.

3 0

3 years ago

You make a scale drawing of a tree using the scale 5 in. =27 ft. If the tree is 67.5 ft tall, how tall is the scale drawing?

wel

5in. 27ft
X in. 67.5ft
X=5•67.5/27
X=12.5 in

8 0

3 years ago