<span>2(20 - y) - 4y = 4
I hope that this helps</span>
Answer:
$15.50
Step-by-step explanation:
The total she spent was $28.50 ($18.00 purse and $10.50 wallet).
The amount she would have spent is $44 ($30+$14).
$44 - $28.50= $15.50 was saved.
Answer:
x = - 16
Step-by-step explanation:
The equation relating two proportional quantities is
y = kx ← k is the constant of proportionality
To find k use the condition when y = 1, x = - 4
k =
= - 
y = -
x ← equation of proportionality
when y = 4, then
4 = -
x (multiply both sides by - 4 )
x = - 16
Their corresponding sides are proportional and their corresponding angles are equal.
Answer:
The weight of the zinc in the metal bar was 50% of the weight of the metal bar .
Step-by-step explanation:
Weight of the metal bar ,M= 36 g
Weight of the zinc in the metal bar , m= 18 g
Percentage of zinc in the metal bar :


The weight of the zinc in the metal bar was 50% of the weight of the metal bar .