Additions serve and help to prove multiplications being correct.
An axiom is understood to be an irrefutable truth, which applies in any field of science, such as mathematics.
Within the exact sciences, then, multiplication is a mathematical operation that reproduces a number by the number of times that the multiplier indicates: it is, in short, a sum of the same number by the number of times arranged by the multiplier.
Thus, the addition allows to verify that the result of the multiplication is correct.
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Answer:
x = 77 - 2y
y = -x/2 + 77/2
Step-by-step explanation:
2x + 4y - 31 = 123
add 31 both sides
2x + 4y - 31 + 31 = 123 + 31
2x +4y = 154
Solve for x
2x = 154 - 4y
divide both sides by 2
x = 77 - 2y
solve for y
2y = 77 - x
divide both sides by 2
y = 77/2 - x/2
Answer:
d = 10 units
Step-by-step explanation:
calculate the distance d using the distance formula
d =
let (x₁, y₁ ) = (3, 0 ) and (x₂, y₂ ) = (9, - 8 )
substitute these values into the formula for d
d =
=
=
=
= 10 units
3x − 5y + 3z = 9
3x + 6y − z = 1
(−1, 0, −2)
(1, 0, −2)
(−1, 0, 2)
(1, 0, 2)