The property of the questions are correctly stated below.
<h3>Properties of the various given equations </h3>
- Commutative property of addition: This is represented by equation 7
- Commutative property of multiplication: This is represented by equation 5.
- Associative property of addition: This is represented by equation 4.
- Associative property of multiplication: Not represented with any equation.
- Additive identity property: This is represented by equation 10.
- Multiplicative identity property: This is represented by equation 1.
- Multiplicative property of zero: This is represented by equation 8.
- Multiplicative inverse property: Not represented with any equation.
- Distribution property: This is represented by equation 2.
- Reflexive property: This is represented by equation 3.
- Symmetric property: Not represented with any equation.
- Transitive property: This is represented by equation 2.
- Substitution property: This is represented by equation 2.
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The additive inverse of a is denoted by unary minus: −a (see also § Relation to subtraction below). For example, the additive inverse of 7 is −7, because 7 + (−7) = 0, and the additive inverse of −0.3 is 0.3, because −0.3 + 0.3 = 0
This can be solved a couple of ways. One way is to use the Pythagorean theorem to write equations for the magnitude from the components of the forces. That is what was done in the graph here.
Another way is to use the Law of Cosines, which lets you make direct use of the angle between the vectors.
.. 13 = a^2 +b^2 -2ab*cos(90°)
.. 19 = a^2 +b^2 -2ab*cos(120°)
Subtracting the first equation from the second, we have
.. 6 = -2ab*cos(120°)
.. ab = 6
Substituting this into the first equation, we have
.. 13 = a^2 +(6/a)^2
.. a^4 -13a^2 +36 = 0
.. (a^2 -9)(a^2 -4) = 0
.. a = ±3 or ±2
The magnitudes of the two forces are 2N and 3N, in no particular order.
Answer:
12
Step-by-step explanation:
( J , Q, K 4 each)
so prob that for 2 cards, both cards are face
= C(12,2)/C(52,2) = 66/1326 = 11/221
Answer:
22
Step-by-step explanation: