If radius BE is a perpendicular bisector of chord AC , BD = 7 cm, and CD = 9 cm, then what is AB to the nearest tenth?

Mathematics

2 answers:

Strike441 [17]3 years ago

5 0

Thank you for posting your question here at brainly. Feel free to ask more questions.

The best and most correct answer among the choices provided by the question is 11.4 cm .

Hope my answer would be a great help for you.

marissa [1.9K]3 years ago

3 0

I hope this helps you

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3) You roll a number cube what's the probability of rolling a number higher than 4 and then a 2?

anastassius [24]

Answer:

1/18

Step-by-step explanation:

Probability of getting a number higher than 4=1/3

Probability of getting 2=1/6

Probability of rolling a number higher than 4 and then a 2=(1/3)*(1/6)=1/18

8 0

3 years ago

Suppose that a Petri dish initially contains 2000 bacteria cells. An antibiotic is introduced and after 4 hour, there are now 16

Sergeu [11.5K]

Answer:

a)The linear function for $P(t)$ is:

$P(t) = 2000 - 100*t$

b)The exponential function for $P(t)$ is:

$P(t) = 2000e^{-0.055t}$

Step-by-step explanation:

(a) Suppose that P(t) is a linear function. Find a formula for P(t):

$P(t)$ can be modeled by a linear function in the following format.

$P(t) = P_{0} - r*t$ , in which $P_{0}$ is the initial number of bacteria cells in the dish, t is the time and r is the rate that the number decreases.

Since the dish initially contains 2000 bacteria cells, $P_{0} = 2000$

We have

$P(t) = 2000 - r*t$

An antibiotic is introduced and after 4 hour, there are now 1600 bacteria cells present. So $P(4) = 1600$ . With this information, we can find the value of r.