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GuDViN [60]
3 years ago
14

Cindy is growing plants for a science project. During the project, one plant grows from a height of 7 cm to 10.85 cm. What is th

e percent increase in the height of the plant?
Mathematics
1 answer:
Leto [7]3 years ago
8 0

Answer:

Percentage increase in the height is 55%.

Step-by-step explanation:

Since Cindy is growing plants for a science project. During the project Cindy found that one plant grows from 7 cm to 10.85 cm.

We have calculate percent increase in the height of the plant.

We know formula to calculate the percentage is

% Increase in the height = Net increase in the height×100/Initial length of the plant

                                         = \frac{(10.85-7)100}{7}= \frac{(3.85)(100)}{7}=\frac{385}{7}= 55%

Therefore % increase in the height of the plant is 55%.

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Answer:

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Step-by-step explanation:

We can solve this graphically without doing calculations.

The y component of the focus is y = 3.  Since this is above the directrix, we know this is an upward facing parabola, so it must have a positive coefficient.  That narrows the possible answers to A and C.

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But let's say this wasn't a multiple choice question and we needed to do calculations.  The equation of a parabola is:

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So:

y = 1/(4×3) (x − 5)² + 0

y = 1/12 (x − 5)²

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