Answer:
30
Step-by-step explanation:
Area of a parallelogram = base length * height
The parallelogram has a given base length of 10 cm and a given height of 3 cm
Hence, area = 10 * 3 = 30cm^2
Answer:
The charge on the ion is +3.
Step-by-step explanation:
We are given the following in the question:
Number of protons = 26
Number of electrons = 23
Charge on 1 proton = +1
Charge on one electron = -1
We have to calculate the total charge on the ion.
Total charge on ion =
=(Number oof proton)(Charge of proton) + (Number of electron)(Charge of electron)

Thus, the charge on the ion is +3.
120/4 = 30 So the average cost of a lamp is $30
Answer:
3
Step-by-step explanation:
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Answer: Circumcenter
Step-by-step explanation: The circumcenter is the point where all perpendicular bisectors of a triangle meet. The 3 perpendicular bisectors of the 3 sides of the triangle meet at the point which is labeled in this triangle as H.