Answer:
2.5 gallons of the 20% solution must be replaced by the 36% solution.
Step-by-step explanation:
The value of y is am-z/7
<h3>How to calculate the value of y ?</h3>
The expression is given as follows
3y +z= am-4y
The first step is to collect the like terms in both sides, this way the numbers that both have y as their coefficient will be on the same side
3y + 4y= am-z
y(3+4)= am -z
7y= am-z
Divide both sides by the coefficient of y which is 7
7y/7= am-z/7
y= am-z/7
Hence the value of y in the expression is am-z/7
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Answer:
b
Step-by-step explanation:
Answer:
the tip is $10.5 = $72.15= $70*.15+ $10.5
Step-by-step explanation:
Answer:
they are limited because rulers only count up to 12 inches and scales can only weigh up to a certain weight depending on the scale being used.
