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3 years ago

Simplify the following: 4x - 11y + 9x - 1y - 2x + 5x

Mathematics

2 answers:

victus00 [196]3 years ago

6 0

Answer:

16x-12y

Step-by-step explanation:

Combine like terms

8_murik_8 [283]3 years ago

5 0

Answer:

16x + -12y

Step-by-step explanation:

if you group all of the x's you get 16x and if you group all of the y's you get -12y.

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Step-by-step explanation:

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3 years ago

State one form of the Law of Cosines and provide a trick for writing the other two forms and explain when Law of Cosines should

Yuki888 [10]

Solving for Angles

$\displaystyle \frac{a^2 + b^2 - c^2}{2ab} = cos∠C \\ \frac{a^2 - b^2 + c^2}{2ac} = cos∠B \\ \frac{-a^2 + b^2 + c^2}{2bc} = cos∠A$

* Do not forget to use the inverse function towards the end, or elce you will throw your answer off!

Solving for Edges

$\displaystyle b^2 + a^2 - 2ba\:cos∠C = c^2 \\ c^2 + a^2 - 2ca\:cos∠B = b^2 \\ c^2 + b^2 - 2cb\:cos∠A = a^2$

You would use this law under two conditions:

One angle and two edges defined, while trying to solve for the third edge
ALL three edges defined

* Just make sure to use the inverse function towards the end, or elce you will throw your answer off!

_____________________________________________

Now, JUST IN CASE, you would use the Law of Sines under three conditions:

Two angles and one edge defined, while trying to solve for the second edge
One angle and two edges defined, while trying to solve for the second angle
ALL three angles defined [of which does not occur very often, but it all refers back to the first bullet]

* I HIGHLY suggest you keep note of all of this significant information. You will need it going into the future.

I am delighted to assist you at any time.

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3 years ago

What is 9/11*4/15 in the simplest form

stiks02 [169]

Answer:

$\frac{12}{55}$