8
Ab+cd > ad+cb. A and c are the metals or the positive ion
This kind of chemical reaction is usually called "displacement" and sometimes "substitution".
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.
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!
AB + C —> AC + B
15 units
9
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.
a(b + d).
Isosceles trapezoid ABCD has an area of 276 If AD = 13 inches and DE = 12 inches, find AB.