I’m not a true percent sure but I think it’s C
Answer:
Sales tax is $4.20
Step-by-step explanation:
70*6/100=4.2
First multiply 60 x 6 x 45 = 16,200
Then divide, 16,200/350=46.2857
Answer:
Let x and y be the two numbers. Then
yx=57 and x−y=20
Cross multiplying the proportion
5x=7y or y=75x
So, x−y=20
x−75x=20⇒77x−5x=72x=20
⇒x=2140=70
y=75x=75×70=50
So smaller number is 50.
Check :yx=5070=57 and 70−50=20
Answer:
x=-1
Step-by-step explanation:
4(x+3)=8
4x+12=8
4x=-4
x=-1