Answer:
65
Step-by-step explanation:
(4-7i)(4+7i) =16 + 28i-28i -49i^2 ➡16 - 49i^2
16 + 49 = 65
the fault here is i^2= -1 and -1 multiplied by -49 is +49 not -49
Answer:
78
Step-by-step explanation:
QT is a 180 straight line so 180-55-47
Hope its right!
12/7 + 8/7
12+8 = 20
20/7 = 2 and 6/7ths
Answer:
y =
Step-by-step explanation:
Equation of a line has been given as,
Here, slope of the line =
y-intercept =
"If the two lines are parallel, there slopes will be equal"
By this property slope of the parallel line to the given line will be equal.
Therefore, slope 'm' =
Since, slope intercept form of a line is,
y = mx + b
Therefore, equation of the parallel line will be,
y =
Since, this line passes through a point (-6, 6),
6 =
6 =
b =
b =
b =
Equation of the parallel line will be,
y =
We know that
DF is the diameter of the circle
so
radius r=DF/2----->20/2-----> r=10 in
area of the circle=pi*r²------> pi*10²-----> 100*pi in²-----> 314 in²
the answer is
100*pi in² or 314 in²