3 years ago

Helppppppppp!!!!!!!!

Mathematics

1 answer:

Pavlova-9 [17]3 years ago

4 0

Answer:

The answer is D

Step-by-step explanation:

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A culture of bacteria has an initial population of 92000 bacteria and doubles every 7 hours. Using the formula P_t = P_0\cdot 2^

ludmilkaskok [199]

Answer:

im here for the a

Step-by-step explanation:

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3 years ago

Which of the following is the standard equation of the ellipse with vertices at (1,0) and (27,0) and an eccentricity of 5/13?

Dovator [93]

The equation of the elipse is given by:

$\frac{(x - 14)^2}{169} + \frac{y^2}{144} = 1$

The equation of an elipse of center $(x_0, y_0)$ is given by:

$\frac{(x - x_0)^2}{a^2} + \frac{(y - y_0)^2}{b^2} = 0$

Values a and b are found according to the <u>vertices and the eccentricity</u>.

It has vertices at (1,0) and (27,0), thus:

$x_0 = \frac{27 + 1}{2} = 14$

$y_0 = \frac{0 + 0}{2} = 0$

$a = \frac{27 - 1}{2} = 13$

$a^2 = 169$

It has eccentricity of $\frac{5}{13}$ , thus:

$\frac{5}{13} = \frac{c}{a}$

$\frac{5}{13} = \frac{c}{13}$

$c = 13$

Thus, b is given according to the following equation:

$c^2 = a^2 - b^2$

$b^2 = a^2 - c^2$

$b^2 = 169 - 25$

$b = \sqrt{144}$

$b = 12$

The equation of the elipse is:

$\frac{(x - 14)^2}{169} + \frac{y^2}{144} = 1$

A similar problem is given at brainly.com/question/21405803

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3 years ago

The total cost of an $85.73 meal with a 20% tip

kkurt [141]

Answer:

$102.876

Step-by-step explanation:

multiply 85.73 by 120% bc there is the price of the meal and 20% of the original price

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2 years ago

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2 4/5 divided by 2 1/3

Alex Ar [27]

Answer: Exact form: 6/5 Decimal form: 1.2 Mixed Number form: 1 1/5

hope this helps! :)

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3 years ago

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kirill115 [55]

Its the quadratic formula

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3 years ago