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sunshine0613
26.03.2020 •
Mathematics
How do you do this? 20 points
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Ответ:
a) i) 9:25
ii) 27:125
b) i) 7:9
ii) 343:729
Step-by-step explanation:
Ratio of areas = (ratio of sides)²
= 3² : 5² = 9 : 25
Ratio of volumes = (ratio of sides)³
= 3³ : 5³ = 27 : 125
49 : 81 = ratio of areas
Ratio of sides = 49^½ : 81^½
= 7 : 9
Ratio of volumes = (ratio of sides)³
7³ : 9³ = 343 : 729
Ответ:
D) x=250
Step-by-step explanation:
add 15 to both sides and you get x/5=50
then multiply both sides by 5 and you get x=250