Answer:
2/3
Step-by-step explanation:
10 / 3 * 1/5 = 2/3
Answer:
The third one I think, O (5,-1), but I'm not sure if I'm correct or not.
Step-by-step explanation:
You should guess.e.g y=3 x=0 or y=5 x=3.
(<em>u</em> × <em>v</em>) • <em>w</em> makes sense, since <em>u</em> × <em>v</em> is another vector, and so (<em>u</em> × <em>v</em>) • <em>w</em> is a scalar.
<em>u</em> × (<em>v</em> • <em>w</em>) does not make sense, since <em>v</em> • <em>w</em> is a scalar, and the cross product is not defined between a vector and a scalar.
(<em>u</em> × <em>v</em>) × <em>w</em> makes sense, since <em>u</em> × <em>v</em> is a vector and so is <em>w</em>.
<em>u</em> • (<em>v</em> • <em>w</em>) does not make sense, since <em>v</em> • <em>w</em> is scalar, and the dot product is not defined between a vector and a scalar.
Answer:
"The sum of two rational numbers is rational."
By definition, a rational number can be expressed as a fraction with integer values in the numerator and denominator (denominator not zero). So, adding two rationals is the same as adding two such fractions, which will result in another fraction of this same form since integers are closed under addition and multiplication. Thus, adding two rational numbers produces another rational number.