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# Tutor profile: Ashleigh T.

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Ashleigh T.
Senior at MIT
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## Questions

### Subject:Pre-Algebra

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Question:

What is the slope of a line that is perpendicular to the line \$\$4x - 2y = 12\$\$?

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Ashleigh T.

First, convert this equation in to y = mx + b form. The result is: \$\$ y =2x -6\$\$. In order to determine the slope of a perpendicular line, remember that the product of two perpendicular slopes is = -1. Using this fact, we can create the equation \$\$-1 = 2*m2\$\$. Solving this, we find the slope to be \$\$m2= -1/2\$\$

### Subject:Basic Chemistry

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Question:

Determine the number of moles of aluminum in \$\$2.154 * 10^-1\$\$ kg of Al.

Inactive
Ashleigh T.

In order to solve this problem, convert \$\$2.154*10^-1\$\$ kg to g, which is 215.4 g. Next, use the molar mass of aluminum, which is 26.98g/mol , to convert grams of aluminum to moles. Using dimensional analysis, \$\$215.4 g * (1 mol / 26.98 g) \$\$ = 7.984 mol

### Subject:Calculus

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Question:

Take the derivative of \$\$5x^2+6x-2\$\$

Inactive
Ashleigh T.

\$\$10x+6\$\$

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