Answer:
x=2
HPT 3x+5y=6 (1) và 2x+y=4 (2)
Nhân phương trình (2) với 5 để hệ số y của 2 phương trình bằng nhau. Ta có:
(2)⇔ 10x+5y=20(3)
Trừ (3) cho (1), có: 7x+0y=14⇒x=2
Answer:
r is 1 5/8
Step-by-step explanation:
3 3/4 is the same as 3 6/8, now both denominators are the same.
5 3/8 - 3 6/8 is the same as 43/8-30/8 which is 13/8, or in mixed number form, 1 5/8.
So r=1 5/8
The ratio of the pink to white marbles is 20%
Answer:
12/8 = 30/x ... x =20minutes
Step-by-step explanation:
5/8 of the total has been sold, so we just do 64*5/8=40 houses that had been sold this year. Hope this helped!
