Answer:
Stem-and-leaf. You can use a stem-and-leaf plot to find the mean, median and mode of a set of data.
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Step-by-step explanation:
m<5=180-m<4 (linear pair)
m<5=180-125 = 55°
m<5=m<1 ( alternate angle)
therefore, m<1 = 55°.
hope this helps you.
Answer:
x^3+3x^2+9x+27
Step-by-step explanation:

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The factoring of the difference of squares is used (twice):
a² -b² = (a -b)(a +b)