3 years ago

Which equation is in quadratic form?

Mathematics

2 answers:

garri49 [273]3 years ago

6 0

Answer: a is in quadratic form

g100num [7]3 years ago

5 0

The answerrrrrrrrrrr is a

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Solve as a difference equation.

zhannawk [14.2K]

Solution :

Let y = amount of caffeine at a given time in body.

n = number of hours

So $\frac{dy}{dn}= - \ Y$

$$\Rightarrow \frac{dY}{Y}=- 0.01 \ dn$

ln Y = -0.01 n + C

At n = 0, Y = 130 mg

ln 130 = -0.01 x 0 + C

C = ln 130

$\ln \frac{Y}{130} =- 0.01 \ n$

$Y = 130 \ e^{-0.01n}$

When Y = 65

$65 = 130 \ e^{-0.01 n }$

$\frac{65}{130}=e^{-0.01n}$

$\ln \frac{1}{2} = -0.01 \ n$

n = 69.315 hours

At n = 24 hours

$Y = 130 \ e^{-0.01 \times 24}$

Y = 102.26 mg

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3 years ago

The flagpole in Terry's schoolyard is 50 ft tall. On a sunny day, the flagpole casts a shadow 30 ft long on level ground. What i

RSB [31]

Answer:

64.5°

Step-by-step explanation:

it is the answer got it nd comment me

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3 years ago

Help me please <br><br> Find the average of these numbers.<br><br> 15, 12, 17, 13, 20, 19

Lynna [10]

We would find the mean. So:
15 + 12 + 17 + 13 + 20 + 19 = 96
Divide the sum by the amount of numbers added together.
So: 96/ 16
The mean or average is 16

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3 years ago

9+m/3=2help me please

Verizon [17]

Answer:

m = -21

Step-by-step explanation:

9+m/3=2

1. Subtract 9 from both sides

9 - 9 + m/3 = 2 - 9

m/3 = -7

2. Multiply both sides by 3

3 (m/3) = -7 (3)

m = -21

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Scilla [17]

I had a seizure trying to understand that question

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3 years ago