Answer:
Step-by-step explanation:
x + y = 4 ---------------(i)
x = 4-y
7x + 9y = 42 -----------(ii)
Plug in x = 4-y in equ (ii)
7*(4 - y) + 9y = 42
28 - 7y +9y = 42
28 + 2y = 42
2y = 42 - 28
2y = 14
y = 14/2
y = 7
x = 4 - y
x = 4 - 7
x = -3
Answer:
1,846.30
Step-by-step explanation:
Step-by-step explanation:
This is a sequence of multiply by 2
3 6 12 24 48
It should be 7,620 since 10x10x10 is 1,000 and you multiply that by 7.62 and it equals 7,620
Answer:
W = P/2 - L
Step-by-step explanation:
WE need to make W the subject of
P = 2L + 2W
2W = P - 2L
W = ( P - 2L) / 2
or W = P/2 - L