Answer:
KJ = 40
Step-by-step explanation:
Usinh the similarity factor, LJ is similar with PR and QR is similar to KJ
and the similarity ratio is 56/42 = 4/3
which means KJ/30 = 4/3 cross multiply expressions
KJ = 40
Multiply the parentheses then collect like terms
(x+4y+z) (x-7y)
x^2-7xy+4xy-28y^2+xz-7yz
x^2-3xy-28y^2+xz-7yz
Answer:
c
Step-by-step explanation:
I did this last year
Answer:
x2+y2−4x+20y+4=0.
Explanation:
The eqn. of a circle with centre (h,k) and radius r is given by,
(x−h)2+(y−k)2=r2.
Accordingly, the reqd. eqn. is,
(x−2)2+(y+10)2=3^2, i.e.,
x2+y2−4x+20y+4=0.
