Select the number property that will justify the step in the following expression.
2 answers:
<h2>Answer:</h2>
The number property that justifies the step in the following expression is:
Commutative-Multiplication
<h2>Step-by-step explanation:</h2>We are given a steps to solve the problem as follows:
4 • 13 • 25 =
4 • 25 • 13 =
100 • 13 = 1,300
We know that the commutative property under multiplication states that:
If a and b are two real numbers then:
i.e. the multiplication of two real numbers are always equal no matter in which order they are applied.
Here in the second step the order 13 and 25 are changed.
and then they are operated.
<em> Hence, the property is:</em>
<em> Commutative-Multiplication.</em>
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Answer:
(g-f) (-1)= sqrt(15)
(f/g)(-1)= 0
(g+f)(2)=sqrt(3)-3
(g*f)(2)=-3*sqrt(3)
Step-by-step explanation:
We have to eval the expressions given in the point indicated.
Lets start by the first equation
(g-f)(-1)= g(-1) - f(-1)= =
Now, lest continue with the others
(f/g)(-1)= f(-1)/g(-1)= (1-1)/sqrt(15)=0
(g+f)(2)=g(2)+f(2)=sqrt(3)-3
(g*f)(2)=g(2)*f(2)=sqrt(3)*(-3)=-3sqrt(3)