Let x be your first alloy
2/5x+7/10(30-x)=1/2(30)
4x+210-7x=150
3x=60
x=20
So, you need 20 lbs of the first alloy, and 10 parts of the second to make 30 lbs of half iron and half silver alloy!
Answer:
2x+10=-8
x=9
3x=9
x=3
2x=8
x=4
4x=20
x=5
Step-by-step explanation:
18 ÷ 3
= 6/1
Option [a] 6 to 1 is correct !
Part A: W= Wage (money earned)
$6 (earned per hour without working overtime) Equation: W=$6x
x= number of hours
S= (money earned)
$6 plus $9 (earned per hour with working overtime) Equation S=$15y
y= hours
Part C: Use S=$15y (this shows the amount of money earned after working overtime after the certain amount of hours spent)
$330=$15y
I think you can solve from there
Answer:
e ≥ 2w
Step-by-step explanation:
To make this easier, let us consider the case of Eliza being exactly twice as old as wendy
that would mean that twice the age of Wendy is the age of Eliza
e = 2w
but since she is AT LEAST twice as old as her, the age of eliza can be greater than twice of wendy and it might be equal to twice the age of Wendy
Hence, the symbol '=' will be replaced by '≥'
Hence, the correct relation is
e ≥ 2w
