Answer:
the answer is the first one [3 -12 15 -21]
Step-by-step explanation:
Because 3 times 1 = 3, 3 times -4 = -12, 3 times 5=15, 3 times 7 = -21
because they are in order to get a negative one of them have to be a negative if they both of them where negative it would be positive.
Can you mark me brainliest
I think b because all the other lines are the same length and b lines aren’t
Answer:
Step-by-step explanation:
Answer:
x = 2.5
Step-by-step explanation:
<em>For the equation:</em>
<em />
<em>The cross product is:</em>
4 × x = 2 × 5
<em>Solving for X</em>
<em />
<em />
<em />
<em>And reducing:</em>
x = 2.5
<span>1. System of equations</span>
Well, the definition of a system of linear equations is: Any equation that can be written in the form Ax + By = C. ... The System of equations is a set of equations with the same variables is a system of equations.1. ... Solve the newer equation, then substitute the value found into any equation involving both variables and solve for the other variable. ... To sum up this paper, There are three types of systems of equations. There is 3 ways to algebraically solve systems of equations
