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Airida [17]
3 years ago
8

PLEASE HELP URGENT! I'LL GIVE BRAINLIEST This graph represents the relationship between the growth of a plant and the amount of

time that has passed since the plant was planted.
Based on the data in the graph, which statement is true?


The plant grows at a rate of 3 inches every 2 weeks.

The plant grows at a rate of 6 inches every 2 weeks.

The plant grows at a rate of 2 inches every 3 weeks.

The plant grows at a rate of 4 inches every 6 weeks.

Mathematics
2 answers:
Serjik [45]3 years ago
5 0
The plant grows at a rate of 3 inches every 2 weeks.

Have an amazing day!
postnew [5]3 years ago
5 0

Answer:  a

Step-by-step explanation:

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A dog jumps straight up. Y=-16t^2+20t models the motion of the dog, where "t" is the time in seconds and "y" is the height of th
alina1380 [7]

Answer:

Step-by-step explanation:

The motion of the dolphin is quadratic

i.e y=-16t²+20t

To get the maximum height the dolphin will reach

We need to find the point of inflexion. i.e dy/dt=0

dy/dt=-32t+20

Then set dy/dt=0

0=-32t+20

Then, -32t=-20

t=0.625

Let find d²y/dt²

d²y/dt²=-32. Since this is negative then the point t=0.625 is the maximum point the dolphin can reach

Then substitute t=0.625 into y

y=-16t²+20t

y=-16(0.625)²+20(0.625)

y=6.25ft

Then the maximum height the dolphin can reach is 6.25ft

Using discriminant

Formular method

y=-16t²+20t

So the dog height y<7

y=-16t²+20t <7

-16t²+20t-7<0

a=-16, b= 20. c=-7

t=(-b±√b²-4ac)/2a

Using the a, b and c direct for the discriminant

D=b²-4ac

D=20²-4×-16×-7

D=-48

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a=-16, b=20

(20)²-4(-16c)>0

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64c>-400

Then

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Divide both side by - and the inequality sign will change

Therefore -c<6.25

So the dog height y<6.25

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Therefore the maximum height is 6.25.

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5 0
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Lorico [155]

Answer:

true.

Explanation:

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If a negative number is raised to an even power, the result will be positive. If a negative number is raised to an odd power, the result will be negative

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PLEASE HELP ASAP!!
Gala2k [10]

Answer:

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