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3 years ago

9.2 written as a mixed number in simplest form?

Mathematics

2 answers:

Strike441 [17]3 years ago

5 0

It will be c . If that is 9 and one fifth

timama [110]3 years ago

4 0

I think it's 9/2 but I'm not 100% sure

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Two savings accounts were each opened with a $6,000 deposit. Account A earns compound interest at a 2% annual interest rate comp

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Answer:

Account A will earn approximately $7 more in interest than account B.

Step-by-step explanation:

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3 years ago

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How to simply this ratio

arlik [135]

Answer:

75 : 3 : 6250

Step-by-step explanation:

We use 3 to simplify the ratio to 75 : 3 : 6,250.

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2 years ago

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Can someone please help me with B it’s a 1 Mark question!!!!!!!!!!!HELP

VMariaS [17]

Answer:

137°

Step-by-step explanation:

Basically, its the reverse of question 1.

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2 years ago

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Help with 30 please. thanks.

Svet_ta [14]

Answer:

See Below.

Step-by-step explanation:

We have the equation:

$\displaystyle y = \left(3e^{2x}-4x+1\right)^{{}^1\! / \! {}_2}$

And we want to show that:

$\displaystyle y \frac{d^2y }{dx^2} + \left(\frac{dy}{dx}\right) ^2 = 6e^{2x}$

Instead of differentiating directly, we can first square both sides:

$\displaystyle y^2 = 3e^{2x} -4x + 1$

We can find the first derivative through implicit differentiation:

$\displaystyle 2y \frac{dy}{dx} = 6e^{2x} -4$

Hence:

$\displaystyle \frac{dy}{dx} = \frac{3e^{2x} -2}{y}$

And we can find the second derivative by using the quotient rule:

$\displaystyle \begin{aligned}\frac{d^2y}{dx^2} & = \frac{(3e^{2x}-2)'(y)-(3e^{2x}-2)(y)'}{(y)^2}\\ \\ &= \frac{6ye^{2x}-\left(3e^{2x}-2\right)\left(\dfrac{dy}{dx}\right)}{y^2} \\ \\ &=\frac{6ye^{2x} -\left(3e^{2x} -2\right)\left(\dfrac{3e^{2x}-2}{y}\right)}{y^2}\\ \\ &=\frac{6y^2e^{2x}-\left(3e^{2x}-2\right)^2}{y^3}\end{aligned}$