The sum of functions is given as:
In this case we have:
The domain of the functions is any number that makes the squared root a real number, then:
Hence the domain of the functions is:
I want to know what 1/3 + -7/4 is in fraction form! Thanks!
2 answers:
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Answer:
x ≈ 1.32, x ≈ - 5.32
Step-by-step explanation:
Given
x² + 4x - 7 = 0 ( add 7 to both sides )
x² + 4x = 7
To complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(2)x + 4 = 7 + 4
(x + 2)² = 11 ( take the square root of both sides )
x + 2 = ± ( subtract 2 from both sides )
x = - 2 ±
Thus
x = - 2 - ≈ - 5.32 ( to 2 dec. places )
x = - 2 + ≈ 1.32 ( to 2 dec. places )
Answer:
Gradient = 2
Step-by-step explanation:
Gradient of a line = Slope of the line
Since, slope of a line passing through two points and
is given by,
Slope =
Given line in the graph passes through two points (1, 0) and (2, 2)
Therefore, slope or gradient of the line =
= 2
Gradient = 2 will be the answer.