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Gennadij [26K]
3 years ago
6

Two angles of a triangle measure 12 degrees and 40 degrees. What is the measurement of the third angle of the triangle

Mathematics
2 answers:
maw [93]3 years ago
4 0

Answer: 128 degrees

Step-by-step explanation:

padilas [110]3 years ago
3 0

Answer:

128

Step-by-step explanation:

A triangle's angles must add up to 180 degrees, so 180 = 40 + 12 + x which is the same as 180 - 40 - 12 = x

x = 128

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Find the percent of the area under the density curve where x is more than 3. <br>​
Gekata [30.6K]

Answer:

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Step-by-step explanation:

Since the density curve is a linear function, the area under the curve can be calculated by the geometric formula for a triangle, defined by the following expression:

A = \frac{1}{2}\cdot (x_{f} - x_{o})\cdot  (y_{f}-y_{o}) (1)

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A - Area, in square units.

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y_{f} - y_{o} - Height of the triangle, in units.

The percent of the area is the ratio of triangle areas under the density curve multiplied by 100 per cent, that is:

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