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Iteru [2.4K]
3 years ago
10

Ill give brainliest Triangle Sum Theorem CLASSWORK

Mathematics
2 answers:
olasank [31]3 years ago
8 0

Answer:

(14x + 1) + 90 + 61 = 180 \\ 14x + 152 = 180 \\ 14x = 28 \\  \boxed{x = 2}

<h3>2 is the right answer.</h3>

(4x + 3) + 55 + 70 = 180 \\ 4x + 128 = 180 \\ 4x = 52 \\  \boxed{x = 13}

<h3>13 is the right answer.</h3>

zepelin [54]3 years ago
7 0

Step-by-step explanation:

Sum of angles in a triangle = 180°.

Question 3:

We have 90° + 61° + (14x + 1)° = 180°.

=> 14x° + 152° = 180°

=> 14x° = 28°

=> x = 2.

Question 4:

We have 70° + 55° + (4x + 3)° = 180°.

=> 4x° + 128° = 180°

=> 4x° = 52°

=> x = 13.

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DochEvi [55]

Answer:

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This tells us that:

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Step-by-step explanation:

So we are saying we have scalars, c and d, such that:

c\left[\begin{array}{ccc}5\\5\\ 3\end{array}\right]+d\left[\begin{array}{ccc}7\\-8\\-9\end{array}\right]=\left[\begin{array}{ccc}-16\\3\\-15\end{array}\right].

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So we can write this as:

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8 0
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