A rocket being launched has three engines that are independent of each other. The probability of an engine firing is 0.97. What
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Answer:
x = 3 ±
Step-by-step explanation:
x² - 6x - 4 = 0 ( add 4 to both sides )
x² - 6x = 4
To complete the square
add ( half the coefficient of the x- term)² to both sides
x² + 2(- 3)x + 9 = 4 + 9
(x - 3)² = 13 ( take square root of both sides )
x - 3 = ± ( add 3 to both sides )
x = 3 ±
The equation of the line is given as 
A straight line equation is given in the form
where 
is the gradient and 
is the y-interest.
We need to rearrange to make 
the subject.
⇒ from here we can read the gradient and the y-intercept. The gradient, 
and 
.
<span>A line that is parallel to
will have the same gradient, but different y-intercept. One example of equation of a line that is parallel to is 
</span>
A straight line equation is given in the form
We need to rearrange
<span>A line that is parallel to
</span>