A butcher is dividing a round of beef into 3 equal sized roasts. If each roast weighs 7.9 pounds, and there are 1.4 pounds of be
2 answers:
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Answer:
Step-by-step explanation:
equation (1):
equation (2): y=2x
solve the system by substitution
step1: sub (2x) for y in equation 1:
step2: simplify the expression:
(divide by 2 for both sides)
To find the value for y sub 21/4 for x in equation 2:
y=2x
y=2×(21/4)
Answer:
Step-by-step explanation:
<u>Directly Proportion</u>
It's said that y varies directly proportional as x, if:
Where k is a constant of proportionality.
We know that y=7 when x=1/2.
Using the above condition, we can find the value of k:
Solving for k:
k=14
Thus, the equation is: