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docker41 [41]
4 years ago
6

Need help with question 7Quick!!!Help Help HELP

Mathematics
1 answer:
goldfiish [28.3K]4 years ago
6 0
I think it is ae if i get it wrong sorry goodluck
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Bus A and Bus B leave the bus depot at 5 pm. Bus A takes 30 minutes to complete its route once and bus B takes 35 minutes to com
shepuryov [24]

Answer:

Step-by-step explanation:

Bus A will take 1 hour and will arrive back at 6pm, because 30+30=60 and there are 60 min is one hour. Bus B will arrive 1 hour 10 minuets. 35+35=70, Knowing that it will arrive there in over an our because there is more than 60 min, and the extra ten is the amount of minuets. SO bus B will arrive at 6:10pm. Hope I explained this right.

5 0
4 years ago
A biologist observed a population of bacteria that grew at a rate expressed by the exponential equation
bearhunter [10]

Answer:

<em>It will take 26.34 minutes for the population to reach 5 times its initial value</em>

Step-by-step explanation:

<u>Exponential Growing</u>

The population of bacteria grows at a rate expressed by the equation:

f(t)=256e^{0.06111t}

Where t is in minutes.

We need to know when the population will reach 5 times its initial value. The initial value can be determined by setting t=0:

f(0)=256e^{0.06111\cdot 0}=256\cdot 1=256

Now we find the time when the population is 5*256=1,280. The equation to solve is:

1,280=256e^{0.06111t}

Dividing by 256:

e^{0.06111t}=1,280/256=5

Taking natural logarithms:

ln\left(e^{0.06111t}\right)=ln5

Applying the logarithm properties:

0.06111t=ln5

Solving for t:

t=ln5/0.06111=26.34

It will take 26.34 minutes for the population to reach 5 times its initial value

6 0
4 years ago
I think of a number, I subtract 10 and add 2 . My answer is 20, What was my number​
Alina [70]

Answer:

28

Step-by-step explanation:

x-10+2=20

add -10 and 2 together to simplify the equation

x-8=20

add 8 to both sides to isolate x

x=28

hope this helped!

4 0
3 years ago
IS C THE CORRECT ONE, easy I’ll make BRAINLIEST
Kruka [31]

Answer:

yes it is

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Help! :(((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((
Hatshy [7]

Answer:

The answer is 7

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
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