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dangina [55]
3 years ago
13

The height of a sunflower plant varies directly with its age. Once it has sprouted from the ground, when a sunflower is 2 week o

ld, it is 38 centimeters tall. When it's 6 weeks old, it is 114 centimeters tall. How tall is a sunflower plant that is 3 1/2 weeks old?
Mathematics
2 answers:
KonstantinChe [14]3 years ago
7 0

Answer:

66.5

Step-by-step explanation:

38/2 = 19

114/6 = 19

19 x 3.5 = 66.5

Effectus [21]3 years ago
7 0

Answer: 66.5cm

Step-by-step explanation:

2weeks--38 cm

6weeks--114cm

31/2weeks--X

Using given information it is easy to calculate rate of sunflower grow.

Use proportion

2:6=38:114

2:3.5=38:x

2X=3.5*38

X=3.5*38/2

x=66.5cm

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