7, if it was plus. but the question says suntraction.
Answer:
A and D
Step-by-step explanation:
A) 10+2^3*4-1 D) 10+(2^3*4)-1
10+8*4-1 10+(8*4)-1
10+32-1 10+32-1
42-1 42-1
41 41
Answer:
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Answer:
118°
Step-by-step explanation:
EDC is 31° and ECD has the same measure. (Triangle DEC is isosceles)
The total sum of angle EDC and ECD is 31 + 31 = 62°
The total sum of all the angle measures in a triangle is 180°, so just subtract 62 from 180 to get the measure of angle DEC.
180 - 62 = 118°
