<span>√((18-13)^2+(20-8)^2)= 13
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Slimination
the teacher probably wants you to eliminate the x terms since there are an equal number of them
so multiply first equation by -1
-6x+3y=-30
add to second equation
6x-6x+3y+y=18-30
0x+4y=-12
4y=-12
divide by 4
y=-3
subsitute
6x+-3=18
add 3
6x=21
divide both sides by 6
x=21/6=7/2
x=7/2
y=-3
Answer:
w=A/L
Step-by-step explanation:
Division property of equality gives you this answer. Divide L on both sides to leave w remaining.
The algebraic expression for twice difference of a number (n) and 6 is expressed algebraically as, 2(n - 6).
<h3>What is an Algebraic Expression?</h3>
An algebraic expression can be used to model word problem or a situation with the use of variables, operation signs and numbers.
Difference is minus (-)
Let n represent the unknown number.
Thus, twice difference of a number (n) and 6 is expressed algebraically as, 2(n - 6).
Learn more about algebraic expressions on:
brainly.com/question/2164351
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