A nurse starts at the hospital and travels to 5 appointments along a road. The positive numbers stand for going East. The negati
ve numbers stand for going West. Which expression gives the total number of miles he travels to get to these 5 appointments?
a.|6 + -9 + 3 1/2 + -6 1/4 + -3/4|
b.6 – 9 + 3 1/2 – 6 1/4 – 3/4
c.|6| + |-9| + |3 1/2| + |-6 1/4| + |-3/4|
d.|(+6) + (-9) + (3 1/2) + (-6 1/4) + (-3/4)|
a.|6 + -9 + 3 1/2 + -6 1/4 + -3/4|
b.6 – 9 + 3 1/2 – 6 1/4 – 3/4
c.|6| + |-9| + |3 1/2| + |-6 1/4| + |-3/4|
d.|(+6) + (-9) + (3 1/2) + (-6 1/4) + (-3/4)|
1 answer:
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Answer:
m∠DEC = 78°
Step-by-step explanation:
Given information: AC = AD, AB⊥BD, m∠DAC = 44° and CE bisects ∠ACD.
If two sides of a triangles are congruent then the opposite angles of congruent sides are congruent.
AC = AD (Given)
According to the angle sum property, the sum of interior angles of a triangle is 180°.
Divide both sides by 2.
CE bisects ∠ACD.
Use angle sum property in triangle CDE,
Subtract 102 from both sides.
Therefore, the measure of angle DEC is 78°.
