How do you find out f in f-6over5 equals 0?
(f - 6) / 5 = 0
Multiply each side by 5:
f - 6 = 0
Add 6 to each side:
f = 6
Notice that (f - 6) multiplied or divided by anythingalso equals zero.
How do you find the root of 3x²-5x plus 1 equals 0 by quadratic formula?
a=3 b=5 c=1
D=b2-4ac
D=25-12
D=13
x=-b +- Underoot of D The whole divided by 2a.
x=-5+-Under root of 13 Divided by 6
How do you solve linear inequality?
That's going to depend on what statement the inequality itself makes, and
on what you are required to find as a solution. There is no general rule for
every exercise that involves an inequality. Sadly, you have no other choice
but to use your brain every time.
What is 6 plus 17y equal 15 plus 14y?
If: 6+17y = 15+14y then 17y-14y = 15-6 so 3y = 9 and then y = 3
If: x -y = 2 then x = 2 +y
If: x^2 -4y^2 = 5 then (2 +y)^2 -4y^2 -5 = 0
Removing brackets: 4 +4y +y^2 -4y^2 -5 = 0
Collecting like terms: 4y -3y^2 -1 = 0
Divide all terms by -3: y^2 -4/3y +1/3 = 0
Completing the square: (y -2/3)^2 -4/9 +1/3 = 0 => (y -2/3)^2 = 1/9
Square root both sides: y -2/3 = -1/3 or +1/3
Add 2/3 to both sides: y = 1/3 or 1
By substitution into original equation intersection are at: (7/3, 1/3) and (3, 1)
How do you do compositions of functions backwards?
I am not entirely sure what you mean; in general, if you change the order of composition, you will usually get different results: f(g(x)) is usually NOT equal to g(f(x)).
How do you solve -20 equals -4x plus 6?
-20 = -4x +6
add 20 to both sides
0 = -4x +26
4x = 26
x = 26/4 = 6.5
What is the x and y intercepts of -3x plus 5y equals -15?
-3x + 5y = -15
At the x-intercept, y=0:
-3x = -15 . . . . . x = 5
At the y-intercept, x=0:
5y = -15 . . . . . y = -3
How many solutions are possible for 2x equals 2y plus 2 and 2y equals 2x plus 2?
There are 0, or no solutions to these equations. If you rearrange each equation to look like an equation of a line, you will have the two lines:
y = x -1 and y = x + 1, which are two parallel lines. They do not intersect at any point, so there is no solution.
What is rage mathematically speaking?
a notation showing all of the y-values produced by the indicated function.
Domain is a notation showing all of the x-values that produce real answers.
What couse should you opt after bsc maths msc maths or bed maths?
A course in spelling, or typing, obviously!
The number 51 is not the square of a whole number. It is the square of 7.1414.
How can the graph of y equals kx be interpreted for different contexts?
It is a straight line through the origin and, if k > 0 reflects a direct relationship between x and y. This means that each unit increase in x is associated with y increasing by k.
If k < 0 it reflects a direct but negative relationship and this means that each unit increase in x is associated with y decreasing by k.
If k = 0 then the result is the x-axis. This means that changes in x are not associated with changes in y.
None of the above imply causation.