Answer:
Step-by-step explanation:
the solution is right
x^2-6x-7=0:
x^2-6x-7=0
(add 7 to both sides)
x^2-6x=7
x^2-6x+9=7+9 (the coefficient of x² will be used to divide all sides)for here its 1, it will remain same ,
then we get the coefficient of x, divide it by 2 and square it and add it to both sides
which is like these
x²-6x=7
the coefficient of x is -6
-6/2 = -3, square it (-3)² = 9
then add 9 to both sides
x^2-6x+9=7+9
simplifiy the squares on the left hand side
x²+9 = (x-3)²
(x-3)^2=16
√(x-3)^2 )=±√16
x-3=± 4
x=-3±4
then simplify each sign
x=-3+4 x=-3-4
x=1 x=-7
26 1/5 is the answer i got
Distance = speed x time
2.257 x 9.111 = 20.563527 or 20
Answer:
C) 4/(x+y)²
Step-by-step explanation:
start by expanding so it is written as 2÷(x+y)/(x+y)÷2.
Then rearrange so that it is 2×2/(x+y)×(x+y) or 4/(x+y)²
Answer:
Step-by-step explanation:
Y in math is usually referred as the output.
X is usually the input.
In other words,
<em>y</em><em> </em><em>is</em><em> </em><em>3</em><em> </em><em>more</em><em> </em><em>greater</em><em> </em><em>than</em><em> </em><em>x</em><em>.</em>
<em>In</em><em> </em><em>other</em><em> </em><em>words</em><em>,</em>
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