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Stella [2.4K]
3 years ago
13

Which of the following is a rational number?

Mathematics
1 answer:
vagabundo [1.1K]3 years ago
7 0

Answer:

E

Step-by-step explanation:

E is the only option where the answer would be a non--repeating answer, which is pretty much the definition of a rational number.

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Which function can be used to find the number of cells of bacteria in the population at time t
Nonamiya [84]

Answer:

db / dt = kb  

this becomes b(t) = Ce^(kt)  

C = 100, the initial population  

P(1) = 420 = 100 e^(1k)  

4.2 = e^k  

ln 4.2 = k  

a) thus, b(t) = 100 e^(t ln 4.2)  

b) b(3) = 100 e^(3 ln 4.2)  

c) growth constant will still be ln 4.2 (constant percentage of populatioin)  

d) 10000 = 100 e^(t ln 4.2)  

100 = e^(t ln 4.2)  

ln 100 = t ln 4.2  

t = ln 100 / ln 4.2

Step-by-step explanation:

6 0
3 years ago
Can somebody help me? I’m already failing :(
Yuliya22 [10]

Answer:

125

Step-by-step explanation:

f(1)= the first time (32,000)

n= 9

r= .5 (each term is being mulitplied by .5 to get the next one

We have

32,000*(.5)^(9-1)

32,000*(.5)^8

=125

5 0
3 years ago
Find the x-intercept and y-intercept of the graph of of the equation: y=8-3x
soldier1979 [14.2K]

Answer:

x-intercept: x = 8/3

y-intercept: y = 8

Step-by-step explanation:

x-intercept

y = 8 - 3x

0 = 8 - 3x

3x = 8

x =  \frac{8}{3}

••••

y-intercept

y = 8 - 3x

y = 8 - 3 \times 0

y = 8

3 0
3 years ago
Please fill in the blanks i need this
likoan [24]

Answer:

110

242

Step-by-step explanation:

To get the amount for Number of ships 5. you do 5*22.

Same for the the #11. you do 11*22.

<h2><em>Also, Pick me as the smartest please.</em></h2>
8 0
3 years ago
What is the answer to (-7)(2)(-2).
IgorC [24]

Answer:

28

Step-by-step explanation:

-2 × -7 = 14

14 × 2 = 28

thats the correct answer

8 0
3 years ago
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