3 years ago

What classes do you take in the 11th grade year ?

Mathematics

1 answer:

anygoal [31]3 years ago

3 0

When u are going to 11 grade u have to at least take AP calculus or calculus

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Find the formula for the nth term of the arithmetic sequence -39, 61, 161, 261, ...

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<h3>Given that it is arithmetic</h3>

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3 years ago

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3 years ago

Read 2 more answers

PLZ HELP

Alex

Answer:

The correct option is C ) 109.5°

Therefore,

$m\angle E=109.5\°$

Step-by-step explanation:

Given:

In Triangle DEF

d = 10

e = 18

f = 12

To Find

angle E = ?

Solution:

In Triangle DEF , Cosine Rule says

$\cos E=\dfrac{f^{2}+d^{2}-e^{2}}{2fd}$

Substituting the values we get

$\cos E=\dfrac{12^{2}+10^{2}-18^{2}}{2\times 12\times 10}$

$\cos E=\dfrac{-80}{240}=-\dfrac{1}{3}$

Therefore,

$\angle E=\cos^{-1}(-0.3333)$

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Therefore,

$m\angle E=109.5\°$

4 0

4 years ago