Answer:
the first one due to the way up math works
Answer:
z = 18
x = 26 and y = 16
Step-by-step explanation:
Given:


Rewrite
to make
the subject:

Substitute this into
:

Cross multiply:




Substitute found value of x into
and solve for y:


Substitute found value of y into
and solve for z:

Answer:
There is an outliner in the data for the boys, but no the for the girls
Step-by-step explanation:
Answer:
a and -b is the answer
Step-by-step explanation:
(x-a)(x+b) = 0
x-a = 0 and x+b = 0
then
x = a and x = -b
Answer:
A =28 pi cm^2
Step-by-step explanation:
First find the area of the larger circle
A = pi r^2
A = pi (8)^2
A = 64 pi
Find the area of the smaller circle
A = pi r^2
A = pi 6^2
A = 36 pi
The shaded area is the larger circle minus the smaller circle
A shaded = 64 pi - 36 pi
A =28 pi cm^2