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Snowcat [4.5K]
2 years ago
8

two sisters open savings accounts with $60 each that their grandmother gave them the first sister at $20 each month to her accou

nt. the second sister adds $40 every two months to her $60. if the sisters continue to make a deposits at the same rate, when will they have the same amount of money?
Mathematics
2 answers:
Radda [10]2 years ago
8 0
In 2 months☺☺☺☺☺☺☺☺☺☺
Nataly_w [17]2 years ago
3 0
I am pretty sure they will have the same amount of money in two months, because if the first sister is putting in $20 to her $60 account every one month then every two months she will have $40 more in her account.  The second sister is putting in $40 to her $60 account every two months.  So I think they will have the same amount of money in two months.
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A tank has the shape of an inverted circular cone (point at the bottom) with height 10 feet and radius 4 feet. The tank is full
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Step-by-step explanation:

Given that tank has the shape of inverted circular cone

Height = 10 feet and radius =  4 feet

After water pumped out height = 5 ft

Hence volume of water pumped out = \frac{1}{3} \pi R^2 h-\frac{1}{3} \pi r^2 h'

Here we have r/h is constant always

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Substitute to get volume of water pumped out = \frac{1}{3} \pi (10*16-4*5)=\frac{140\pi}{3}

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Here acceleration = gravity = 32.2 ft/sec^2

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3 years ago
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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

Given the equation:

y''' + 9y' = 0

The characteristic equation :

⇒r³ + 9r =0

Solving for r, we get r = 0 and r = ± 3i

The general equation for such equation is :

<u>y = C₁ + C₂cos 3x + C₃sin 3x</u>

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<u>6 = C₁ + C₂ .......................................................1</u>

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Differentiating y' , we get:

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Given:

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Thus, Applying in the above equation, we get

<u>18 = -9C</u><u>₂</u>

or,

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Thus,

<u>y(x) = 8 - 2cos 3x + 3sin 3x</u>

4 0
3 years ago
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