A. 5-2
B. (7+x)^2
C. 5(y-2)
D. 4/x^2
154.825
154.825
154.825
154.825
Answer:
k= -5
Step-by-step explanation:
When x=1 and y= -2,
x-2y+k=0
1 -2(-2)+ k=0
1+4+k=0
5+k=0
k= -5
Answer:
AB = 35
Step-by-step explanation:
For the value of variable z....;
;Perimetre = 132
; 132 = 2(4z + 3) + 2(5z)
; 132 = 8z + 6 + 10z
; 132 - 6 = 8z + 10z
; 126 = 18z
;the value of...z = 7
Therefore the value of length AB;
AB = 5z...then substitute the value of z into the length of AB
; AB = 5(7)
;AB = 35
Answer:
60 days.
Step-by-step explanation:
Let the actual time be x, then:
x - 0.25x = 45
0.75x = 45
x = 45/0.75
= 60 days.
