8
Ab+cd > ad+cb. A and c are the metals or the positive ion
Synthesis - A + B = AB Decomposition - AB = A + B Single Replacement - A + BC = B + AC Double Replacement - AB + CD = AD + CB Combustion - either a synthesis, decomposition, or single replacement reaction. It combines with oxygen.
This kind of chemical reaction is usually called "displacement" and sometimes "substitution".
other name for an exchange reaction but metathesis reaction. This reaction usually occurs in hydrolysis and is AB+CD=AD+CB
This kind of reaction is called a double replacement or double displacement reaction, and has the pattern AB + CD --> AD + CB.
10
6
80 degrees.
If abcd is a parallelogram, then the lengths ab and ad are sufficient. The perimeter is 36 units.
For you A+ Cheaters ;D it's 50!
There is no information as to what the underlying shape is! It is not even clear that the lines are all in the same plane!
15 units
9
a(b + d).
It is easiest to draw it using two right angled triangles.Draw a line AB that is 2 units long. From B, draw BC which is perpendicular to AB and 2 units long. Join AC. From C, draw CD which is perpendicular to AC (clockwise if BC is clockwise from AB, or anticlockwise if BC is anticlockwise) and make CD 2 uinits long. Then AD is a line segment which is sqrt(12) units long.
Ab, Ad, Ah, AI (Abbr.), Al (Name), An, As, At, Ay (Shakespearean).
Isosceles trapezoid ABCD has an area of 276 If AD = 13 inches and DE = 12 inches, find AB.