Caroline Oakes 12 jars of jam in a box. She has 40 boxes.she has 542 jars of jam. How many jars of jam will she have left when a
2 answers:
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Keywords:
<em>Equation, variable, value, clear </em>
For this case we have an equation with a variable of the form . Where
. Given the value of
, we want to find the value of the variable "x". So, we have:
We must clear "x", for this, we add "19" to both sides of the equation:
We divide between "3" on both sides of the equation:
Thus, the value of the variable "x" is 30.
Answer:
Option A
y=13.34 when x=15
Step-by-step explanation:
We are given that x varies directly with y i.e y ∝ x
We know that: y ∝ x then
y= k/x
where k is constant.
So, if y=10 and x=20 we can find k
Now, we need to find y when x=15
We know that k = 200,
So,
So, y=13.34 when x=15
Keywords: Direct variation
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