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lana66690 [7]
3 years ago
7

bruce has a pet worm that fell into a well. the well is 37 feet deep. each day, the worm climbs up 7 feet, but each night, it sl

ides back down 2 feet. how many days will it take for bruce’s worm to get to the top of the well
Mathematics
2 answers:
Rudik [331]3 years ago
6 0
In 24 hours, the worm climbs 5 feet.

7-2= 5 (the worm falls 2 feet every night)


So,

5*8=40 

It will take bruce's worm about 8 days to get to the top of the well. 

I hope this helps!
~kaikers
Ann [662]3 years ago
4 0

Answer:

7 days.

Step-by-step explanation:

Given,

The depth of the well = 37 feet,

Also, each day, the worm climbs up 7 feet, but each night, it slides back down 2 feet.

Thus, the total vertical distance covered by it in a day = 7 - 2 = 5 feet,

Now, since, at the last 7 feet it will not slide back,

Thus, the distance it has to cover at the rate of 5 feet per day = 37 - 7 = 30 feet,

So, the time taken by it to cover 30 feet = \frac{30}{5} = 6 days,

Hence, the total time taken by it = the time taken by it to cover 30 feet + The time taken to climb up last 7 feet

= 6 days + 1 day

= 7 days.

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Help I'm really stuck!!!
faust18 [17]
399.6 square meters
7•8/2=28
28•3=84

8•6.9/2=27.6

(12•8)•3=288

84+27.6+288=399.6
5 0
3 years ago
Read 2 more answers
A hypothetical population consists of eight individuals ages 13, 14, 17, 20, 21, 22, 24, & 30 years.
Alika [10]

Complete Question

A hypothetical population consists of eight individuals ages 13 14 17 20 21 22 24 30 years.  

A: what is the probability that a person in this population is a teenager?  

B: what is the probability of selecting a participant who is at least 20 years old?

We have that  probability that a person in this population is a teenager and probability of selecting a participant who is at least 20 years old is

From the question we are told

A hypothetical population consists of eight individuals ages 13, 14, 17, 20, 21, 22, 24, & 30 years.

  • P(T)=0.38
  • P(T')=0.63

a)

Generally the equation for the  probability that a person in this population is a teenager   is mathematically given as

P(T)=\frac{no of teens}{n}\\\\P(T)=\frac{3}{8}

P(T)=0.38

b)

Generally the equation for the probability of selecting a participant who is at least 20 years old  is mathematically given as

P(T)=\frac{ participants\ who\ is\ at\ least\ 20\ years old}{n}\\\\P(T)=\frac{5}{8}

P(T')=0.63

For more information on this visit

brainly.com/question/11234923?referrer=searchResults

6 0
2 years ago
What is 7999 +9100=?????????
Mama L [17]

the answer is 17099

6 0
3 years ago
the population P (t) of a culture of bacteria is given by P (t) =-1710t +92,000t+10,000, where t is the time in hours since the
Akimi4 [234]

The question might have some mistake since there are 2 multiplier of t. I found a similar question as follows:

The population P(t) of a culture of bacteria is given by P(t) = –1710t^2+ 92,000t + 10,000, where t is the time in hours since the culture was started. Determine the time at which the population is at a maximum. Round to the nearest hour.

Answer:

27 hours

Step-by-step explanation:

Equation of population P(t) = –1710t^2+ 92,000t + 10,000

Find the derivative of the function to find the critical value

dP/dt = -2(1710)t + 92000

         = -3420t + 92000

Find the critical value by equating dP/dt = 0

-3420t + 92000 = 0

92000 = 3420t

t = 92000/3420 = 26.90

Check if it really have max value through 2nd derivative

d(dP)/dt^2 = -3420

2nd derivative is negative, hence it has maximum value

So, the time when it is maximum is 26.9 or 27 hours

5 0
3 years ago
Help plsss it’s timed i need to passss plsss
Free_Kalibri [48]

Answer:

65°

Step-by-step explanation:

To obtain Angle A, we use the cosine rule ;

Cos A = (b² + c² - a²) / 2bc

Cos A = (12² + 14² - 14²) / 2(12)(14)

Cos A = 144 / 336

A = Cos^-1(144/336)

A = 64.62°

A = 65°

4 0
3 years ago
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