Answer:
x = 8√5
Step-by-step explanation:
In the figure attached, there are three right angle triangles.
So, by Pythagoras theorem,
y²+ 4² = z²
y² + 16 = z²------(1)
Similarly x² = 16² + y²--------(2)
and (16 + 4)² = x² + z²
20² = x² + z²-------(3)
Now we put the value of z² from equation 1 to equation 3
20² = x² + y² + 16
x² + y² = 400 - 16
x² + y² = 384
y² = 384 - x²------(4)
Now we put the value of y² from equation 4 to equation 2
x² = 16² + 384 - x²
2x² = 256 + 384
2x² = 640
x² = 320
x = 8√5
Therefore x = 8√5 will be the answer.
Answer:
C
Step-by-step explanation:
Answer:
Step-by-step explanation:
c.d. d=11-18=4-11=-7
y=18+(n-1)(-7)
or y=18-7n+7
or y=25-7n
n=1,2,3, ...
Let


in this problem
f(x)=g(x)
so

using a graph tool
the solution is the intersection of both graphs
see the attached figure
the solutions are
x=-1.89
x=2.66
Answer:
y=2x-4
Step-by-step explanation: