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kherson [118]
3 years ago
15

HELP ASAP IM BEING TIMED! THANKS

Mathematics
1 answer:
Genrish500 [490]3 years ago
8 0

Answer:The second

Step-by-step explanation:

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Is the following statement true? Explain.
sukhopar [10]

Step-by-step explanation:

We can prove the statement is false by proof of contradiction:

We know that cos0° = 1 and cos90° = 0.

Let A = 0° and B = 90°.

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cos(A + B) = cos(0° + 90°) = cos90° = 0.

Right-Hand Side:

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Since LHS =/= RHS, by proof of contradiction,

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2 years ago
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masha68 [24]

Answer:

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2 years ago
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valkas [14]
Let's call the angles x and y. We know that supplementary angles must add to 180 degrees, so x+y=180.

Furthermore, we know that x is 75% more than 2y. We can write "75% more than" numerically as 1.75, so x = 1.75(2y).

We can simplify the second equation by multiplying 1.75 and 2 together to get x = 3.5y.

Now we can solve the system of equations by substitution by plugging 3.5y in for x in x+y=180.

(3.5y) + y = 180

Combine like terms.

4.5y = 180

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Plug y = 40 in and solve for x.

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The answer is 40 and 140. Hope this helps :)
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Step-by-step explanation:

It is 1 then 2 then 3

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