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2 years ago

A circular railroad sign has a diameter of 30 inches. Which is the measurement in square inches?

Mathematics

1 answer:

GarryVolchara [31]2 years ago

7 0

Answer:

area = 94.2 min²

Step-by-step explanation:

area = 30 x 3.14 = 94.2 in²

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The formula Upper A equals 23.1 e Superscript 0.0152 tA=23.1e0.0152t models the population of a US state, A, in millions, t ye

Wewaii [24]

Answer:

a) $A(t=0)= 23.1 e^{0.0152(0)}=23.1e^0 =23.1$

b) $t = \frac{ln(\frac{28.3}{23.1})}{0.0152}=13.357 years$

So for this case the answer would be 13.347 years, the population will be 28.3 million and ye year would be 2000+13.347 and that would be approximately in 2014

Step-by-step explanation:

For this case we assume the following model:

$A(t)= 23.1 e^{0.0152 t}$

Where t is the number of years after 2000/

Part a

For this case we want the population for 2000 and on this case the value of t=0 since we have 0 years after 2000. If we rpelace into the model we got:

$A(t=0)= 23.1 e^{0.0152(0)}=23.1e^0 =23.1$

So then the initial population at year 2000 is 23.1 million of people.

Part b

For this case we want to find the time t whn the population is 28.3 million.

So we need to solve this equation:

$28.3= 23.1 e^{0.0152(t)}$

We can divide both sides by 23.1 and we got:

$\frac{28.3}{23.1}= e^{0.0152t}$

Now we can apply natural log on both sides and we got:

$ln(\frac{28.3}{23.1})= 0.0152 t$

And then for t we got:

$t = \frac{ln(\frac{28.3}{23.1})}{0.0152}=13.357 years$

So for this case the answer would be 13.347 years, the population will be 28.3 million and ye year would be 2000+13.347 and that would be approximately in 2014

3 0

3 years ago

Bag A contains 3 white marbles and 2 red marbles. Bag B contains 6 white marbles and 3 red marbles. A person draws one marble fr

goldenfox [79]

Bag A : 3 white, 2 red....total of 5
Bag B : 6 white, 3 red....total of 9

P(both picks are white) = 3/5 * 6/9 = 18/45 reduces to 2/5 <==

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3 years ago

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eduard

Answer:

my weight is thee answer and I need answer choices

Step-by-step explanation:

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3 years ago

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A delivery to the flower shop is recorded in the chart above. The shop makes centerpiece arrangements using 36 flowers that are

Alchen [17]

Answer:

yes, they will be able to make at least 10 arrangements using each type of flower

no, they will not be able to make 100 arrangements using each type of flower.

Step-by-step explanation:

Explain your thinking: The shop makes arrangements with only the same type of flower. We know that each arrangement requires 36 flowers. By analyzing the data, we can see how many arrangements they can make based on each flower type.

There are 580 tulips - and we need 36 per arrangement

580/36= 16 arrangements of tulips

There are 2,410 daisies

2410/36= 66 arrangements of daisies

There are 4,000 carnations

4,000/36= 111 arrangements of carnations.

Since there are at least 10 arrangements per set of flowers, the first statement is true (we CAN make at least 10 arrangements using each type of flower)

Since there is only 16 arrangements for tulips and 66 for daisies, we CANNOT have at least 100 arrangements per flower type

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3 years ago

Noni is looking for the sum of a number, n, and 21. What is the sum Noni is looking for if n=8

krek1111 [17]

Sum of a number, n and 21...." the sum " means add
n + 21

if n = 8
8 + 21 = 29....the sum is 29

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3 years ago

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A circular railroad sign has a diameter of 30 inches. Which is the measurement in square inches?​

A circular railroad sign has a diameter of 30 inches. Which is the measurement in square inches?