Gabe invested $350 in baseball cards. If he lost d dollars when he sold the cards, which expression represents the amount of mon
2 answers:
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Answer:
a. 7.2
b. 6
Step-by-step explanation:
Since the side lengths of similar polygons are proportional to each other, therefore:
Thus, let's find b using:
Cross multiply
Divide both sides by 15
b = 6
Let's find a using:
Cross multiply
9*12 = 15*a
108 = 15a
Divide both sides by 15
a = 7.2
Changing the subject of the formula
