Laura buys 3 packs of inventions.
20-11=9
(amount given-change=actual cost)
9 ÷ 3 = 3
(actual cost ÷ dollars per pack= number of packs bought)
Answer:
4233
Step-by-step explanation:
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Answer:
Step-by-step explanation:
Multiply those together and combine like terms. Then make sure you order the terms in descending powers.
The width of the pathway is 3m
Step-by-step explanation:
Let the width of the pathway be 'w'
The area will be 130 square meters
The dimensions of the garden is 10 x 7
Area = (10+w) (7+w)
130 = 70 + 17w + w^2
w^2 + 17w - 60 = 0
w^2 +20w - 3w - 60 = 0
w ( w + 20) - 3 ( w + 20) = 0
(w + 20) (w - 3) = 0
w = -20 ( or) w = 3
w is the width and cannot be negative.
So, w = 3 meters
The width of the pathway is 3m
The answer to the equation is approximately 536.91
