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que81hhh
27.10.2020 •
Mathematics
A scale map says that 3 cm represents 50 km what distance on the map in cm represents an actual distance of 75km
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Ответ:
B) Third angle 80°.
Step-by-step explanation:
Given : Orlando is measuring the angles of a triangle. He measures the first two angles and gets 30° and 70°.
To find : What should be the measure of the third angle.
Solution : We have given a triangle
One angle of triangle = 30° .
Second angle of triangle = 70°.
Let the third angle = x .
By the angle sum property : Sum of all the angle of a triangle is 180°.
Then, 30° + 70° + x = 180.
100 ° + x = 180°.
On subtracting both sides by 100
x = 180 - 100.
x = 80 degree.
Therefore, B) Third angle 80°.