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padilas [110]
3 years ago
9

Two angles of a triangle are 30°and 80°. Find the third angle.

Mathematics
1 answer:
stiv31 [10]3 years ago
7 0

Answer:

The third angle of the triangle is 70°.

Step-by-step explanation:

The two angles of a triangle (say Δ ABC) are given to be 30° and 80°.

We have to find the third angle.

Let us assume that ∠ A = 30° and ∠ B = 80°, then we have to find ∠ C.

Now, we know that, ∠ A + ∠ B + ∠ C = 180° {Property of a triangle}

⇒ 30° + 80° + ∠ C = 180°

⇒ ∠ C = 180° - 30° - 80° = 70°

Therefore, the third angle of the triangle is 70°. (Answer)

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Answer:

Options A and C

Step-by-step explanation:

<u>To have a unit rate of change of 4.5 means to have the slope at 4.5</u>

A.  y = 62 + 4.5x  GOOD

B.  c = 4.5 + 3h - 1  WRONG

C.  c = 12 + 4.5h - 4.5  GOOD

D.  y = 3.5x + 1  WRONG

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3 years ago
Which list of numbers is in order from GREATEST to LEAST? 2.7, 2 1/2, 3/10,-1/9 is this right??
ikadub [295]
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8 0
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PIT_PIT [208]
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bagirrra123 [75]

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multiply first equation by 15 to eliminate x:

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15x+15y-15x-10y=8730-6480

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Answer:

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Then you change the fractions to decimals

Step-by-step explanation:

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