Answer:
C
Step-by-step explanation:
(2x-3)(4x+5)
=2x(4x+5)-3(4x+5)
=8x^2+10x-12x-15
=8x^2-2x-15
1 centimetre=0.1 decimetre
therefore the answer is 2.5 decimetres.
To find the 3rd side of a triangle, use the pythagorean theorem.
a^2 + b^2 = c^2
a = 11
b = ?
c = 23
11^2 + b^2 = 23^2
121 + b^2 = 529
b^2 = 408
b = √408 = 2 √102 = 20.199, 20.2, or 20
The answer can be any of those.
Answer: <em>12j+14</em>
Step-by-step explanation:
<em>Take your equation that is given</em>
<em>6+5j+8+7j</em>
<em>Now combine like terms</em>
<em>5j+7j=</em><em>12j</em>
<em>6+8=</em><em>14</em>
<em>12j+14</em>
