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2 years ago

A surveyor locates points A, B, C, D, and E of a pond. Triangle CDE is similar to

Mathematics

1 answer:

EleoNora [17]2 years ago

7 0

C is the most reasonable answer

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HELP ME PLEASE QUICKLY

GenaCL600 [577]

1+5(divided by)5
Since the problem asks to use PEMDAS, you divide 5 by 5 FIRST:
1+1
Then add:
2

Your answer is 2.

8 0

3 years ago

Read 2 more answers

HELPP YALL! ILL MARK BRAINIEST!!! LOOK AT PICTURE!!!

Rufina [12.5K]

m∠3 = 180 - m∠8 = 180 - 123 = 57

m∠1 = m∠3 = 57°

6 0

2 years ago

(15) The ratio of boys to girls at the school is 3:5. If there are 160 students at 1 point the school, how many of them are girl

elixir [45]

Answer:

100

Step-by-step explanation:

160 * (5/8) = 100

4 0

3 years ago

A freshly inoculated bacterial culture of Streptococcus contains 100 cells. When the culture is checked 60 minutes later, it is

Luba_88 [7]

Answer:

$P(t) = 100e^{0.0251t}$

The doubling time is of 27.65 minutes.

Step-by-step explanation:

Exponential equation of growth:

The exponential equation for population growth is given by:

$P(t) = P(0)e^{kt}$

In which P(0) is the initial value and k is the growth rate.

A freshly inoculated bacterial culture of Streptococcus contains 100 cells.

This means that $P(0) = 100$ . So

$P(t) = 100e^{kt}$

When the culture is checked 60 minutes later, it is determined that there are 450 cells present.

This means that $P(60) = 450$ , and we use this to find k. So

$450 = 100e^{60k}$

$e^{60k} = 4.5$

$\ln{e^{60k}} = \ln{4.5}$

$60k = \ln{4.5}$

$k = \frac{\ln{4.5}}{60}$

$k = 0.0251$

$P(t) = 100e^{0.0251t}$

Doubling time:

This is t for which P(t) = 2P(0) = 200. So

$200 = 100e^{0.0251t}$

$e^{0.0251t} = 2$

$\ln{e^{0.0251t}} = \ln{2}$

$0.0251t = \ln{2}$

$t = \frac{\ln{2}}{0.0251}$

$t = 27.65$

The doubling time is of 27.65 minutes.

7 0

2 years ago

Which equation represents an inverse variation?

Sphinxa [80]

Answer: Choice C) y = 30/x

Inverse variation equations are of the form y = k/x. In this case, k = 30. We can rearrange the format to get x*y = k after multiplying both sides by x. So y = 30/x can be turned into x*y = 30.

7 0

2 years ago