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3 years ago

How to solve -3 1/3 + 1 2/3

Mathematics

1 answer:

Airida [17]3 years ago

8 0

Answer:

-1/3

Step-by-step explanation:

= -3(1/3) + 1(2/3)

= -1 + 2/3

= (-3+2)/3

= -1/3

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Cindy plants a daffodil plant. If the plant has one daffodil flower to start with, and the number of daffodils triples every wee

Romashka [77]

Answer:

There will be 729 daffodils in the sixth week

Step-by-step explanation:

Given

$a = 1$ --- start

$r = 3$ --- weekly rate

Required

Number of daffodils in 6th week

This question illustrates an exponential function which is represented as

$f(x) = ab^x$

Where

f(x) = Number of daffodils at x week

x = The week

a = Initial number of daffodils

b= rate

So, we have:

$a = 1$

$b = r = 3$

Hence:

$f(x) = 1 * 3^x$

$f(x) = 3^x$

At the 6th week

$x = 6$

So:

$f(6) = 3^6$ <em> ---- as a power</em>

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$f(6) = 729$ <em> --- standard form</em>

4 0

3 years ago

colby and jaquan are growing bacteria in an experiment in a laboratory. Colby starts with 50 bacteria in his culture and the num

kaheart [24]

To get started, we will use the general formula for bacteria growth/decay problems:

$A_{f} = A_{i} ( e^{kt} )$

where:
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t = time

For doubling problems, the general formula can be shortened to:

$kt = ln(2)$

Now, we can use the shortened formula to calculate the growth rate constant of both bacteria:

Colby (1):
$k_{1} = ln(2)/t$
$k_{1} = ln(2)/2 = 0.34657$ per hour

Jaquan (2):
$k_{2} = ln(2)/t$
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Using Colby's rate constant, we can use the general formula to calculate for Colby's final amount after 1 day (24 hours).

Note: All units must be constant, so convert day to hours.

$A_{f1} = 50( e^{0.34657(24)})$
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Remember that the final amount for both bacteria must be the same after 24 hours. Again, using the general formula, we can calculate the initial amount of bacteria that Jaquan needs:

$A_{f2} = 204,800 = A_{i2} ( e^{0.23105(24)} )$
$A_{i2} = 800$

3 0

3 years ago

21 points for whoever can answer the first question!!

hodyreva [135]

Answer:

Step-by-step explanation:

21 боладыма! дұрыспа

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4 years ago

PLEASE HELP WILL MARK BRAINLIEST THANK YOUUUU

alina1380 [7]

Hi!