(8+12) > side > |8-12|
20 > side > 4, Then 4 cm is the solution.
Whit a triangle solver: http://triancal.esy.es/?a=8&b=12
Answer:
12
Step-by-step explanation:
12 + 15 = 27
15 - 12 = 3
therefore the answers should be 12 becuase 12 is smaller than 15
Answer:
252 ft2 (squared)
Step-by-step explanation:
area= a x b
area= 12 x 21
area= 252 ft2 (squared)
Answer:
7r³ - 3r² + 20r
Step-by-step explanation:
(9r³ + 5r² + 11r) + (-2r³ + 9r - 8r²)
You can get rid of the parentheses since there is nothing to distribute.
9r³ + 5r² + 11r - 2r³ + 9r - 8r²
Combine like factors.
7r³ - 3r² + 20r