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Sophie [7]
3 years ago
10

In ΔCAB, if m∠A = 10x + 9, m∠B = 34°, and m∠C = 97°, what is the value of x?

Mathematics
1 answer:
Zolol [24]3 years ago
7 0

<em>x = 4</em>

<em>Here is why:</em>

When adding up all angles of a triangle, they will be equal to 180.

Let's add ∠B and ∠C together.

34+97=131

Let's subtract it from 180, that will be the value of ∠A.

180-131=49

Now we can set ∠A equal to 49.

10x+9=49

Subtract 9 from both sides.

10x=40

Divide.

<u>x = 4</u>

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Answer:

Commutative property of multiplication

Step-by-step explanation:

Commutative property of multiplication basically means that the order in which you multiply numbers does not matter.

For exampe:

3 x 4 = 4 x 3

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In your case:

5 x 7 x 4 = 5 x 4 x 7

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If we break that down:

5 x 7 x 4 = 5 x 4 x 7

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