Simplifying
9 + 7x = 7x2
Solving
9 + 7x = 7x2
Solving for variable 'x'.
Combine like terms: 7x2 + -7x2 = 0
9 + 7x + -7x2 = 0
Begin completing the square. Divide all terms by
-7 the coefficient of the squared term:
Divide each side by '-7'.
-1.285714286 + -1x + x2 = 0
Move the constant term to the right:
Add '1.285714286' to each side of the equation.
-1.285714286 + -1x + 1.285714286 + x2 = 0 + 1.285714286
Reorder the terms:
-1.285714286 + 1.285714286 + -1x + x2 = 0 + 1.285714286
Combine like terms: -1.285714286 + 1.285714286 = 0.000000000
0.000000000 + -1x + x2 = 0 + 1.285714286
-1x + x2 = 0 + 1.285714286
Combine like terms: 0 + 1.285714286 = 1.285714286
-1x + x2 = 1.285714286
The x term is -1x. Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.
Add '0.25' to each side of the equation.
-1x + 0.25 + x2 = 1.
Answer:
$247.50
Step-by-step explanation:
33/100x750=247.50
Since 33% in a fraction is 33/100, use that x 750 and you will get how much the computer gets marked down.
Hope this helps! Thanks.
-6 7/8 /(-3 3/4)
55/8X4/15
11/6
1 5/6
Answer:
I can probably help
Step-by-step explanation:
Mean of data = sum of values ÷ number of data
We have three values; 84, 87, and
Sum of values =
=
We want the value of
to give mean between 85 and 90 inclusive
Hence, the value of
is between 84 and 99 inclusive
