A pediatricians office tracks the age (in months) in which 25 babies begin to walk. Use the dot plot at the right to answer the
questions below. I Added the picture below please help.
2 answers:
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Hi there!
We can solve for x knowing that the sum of interior angles in a triangle is 180°.
The square at the bottom indicates a right angle, or 90°. Therefore:
180 = 90 + x + (x + 10)
Combine like terms:
180 = 100 + 2x
Subtract 100 from both sides:
180 - 100 = 2x
80 = 2x
Divide both sides by 2:
x = 40.