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Pepsi [2]
3 years ago
7

George and Davon begin their hike at 9 a.m. one morning. They plan to hike from the 2 1/5 -mile marker to the 9 1/15 -mile marke

r along the trail. They plan to hike at an average speed of 2 miles per hour. Will they reach the 9 1/15 -mile marker by noon? Explain your reasoning.
Mathematics
1 answer:
vredina [299]3 years ago
7 0
Yes because when your multiply every thing together you’ll have 9/15 miles
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I'm studying a new bacteria that doubles in numbers every 25 minutes. If i start with 50 bacteria, how long until i have 5 milli
dimaraw [331]

Answer:

415.63 minutes

Step-by-step explanation:

Growth can be represented by the equation A=A_0e^{rt}. We can find the rate at which it grows by using t=25 minutes and \frac{A_{0}}{A} =2 or double the amount at that time. The first step we always take is to divide A_0 by A.

[tex]\frac{A_{0}}{A}=e^{rt}\\2=e^{r(25)}

2=e^{(25)r}

To solve for r, we will take the natural log of both sides and use log rules to isolate r.

ln 2=ln e^{(25)r}\\ln 2=25r (ln e)\\\frac{ln2}{25} =r

We know lne=1 so we were able to cancel it out and divide both sides by 25.

We solve with a calculator \frac{ln2}{25} =r\\0.0277=r

We change 0.0277 into a percent by multiplying by 100 to get 2.77% as the rate.

The equation is A=A_0e^{0.0277t} .

We repeat the step above substituting A=5,000,000, A_0=50, and r=0.02777. Then solve for t.

5000000=50e^{0.0277t}\\\frac{5000000}{50} =e^{0.0277t}\\100000=e^{0.0277t}\\ln100000=lne^{0.0277t}\\ln100000=0.02777t(lne)\\\frac{ln100000}{0.0277} =t

t=415.63 minutes

6 0
4 years ago
What one was c because all them look alike but different solutions
ElenaW [278]
I don't know what c you are talking about because there is no picture
4 0
3 years ago
What is the product of 3 1/5 and 5/8. Use complete sentences in your answer.
vesna_86 [32]
The product of 3 1/5 and 5/8 is 2.
5 0
3 years ago
Which one? I can’t figure it put
Romashka [77]

Answer:corresponding angles

I am very sure

Step-by-step explanation:

8 0
3 years ago
Jina wanted to study how the area of a rectangle changes with the length if it’s width is fixed. She computed the areas of sever
olganol [36]

Answer:

The domain and the range of the function are, respectively:

Dom\{f\} = [0\,m,5\,m]

Ran\{f\} = [0\,m^{2}, 10\,m^{2}]

Step-by-step explanation:

Jina represented a function by a graphic approach, where the length, measured in meters, is the domain of the function, whereas the area, measured in square meters, is its range.

Dom\{f\} = [0\,m,5\,m]

Ran\{f\} = [0\,m^{2}, 10\,m^{2}]

8 0
3 years ago
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