1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Lapatulllka [165]
3 years ago
6

Initially, there were only 86 weeds in the garden. The weeds grew at a rate of 29% each week. The following function represents

the weekly weed growth: f(x) = 86(1.29). Rewrite the function to show how quickly the weeds grow each day.
A.f(x) = 86(1.04)*; grows approximately at a rate of 0.4% daily

B.f(x) = 86(1.04)7%, grows approximately at a rate of 4% daily

C.f(x) = 86(1.29)7%; grows approximately at a rate of 20% daily

D.f(x) = 86(1.297); grows approximately at a rate of 2% daily​
Mathematics
1 answer:
Dmitry [639]3 years ago
8 0

Answer:

Option A. f(x)=86[1.04]^{x} ; grows approximately at a rate of 0.4% daily

Step-by-step explanation:

we have

f(x)=86(1.29)^{x}

where

f(x) the number of weeds in the garden

x ----> the number of weeks

Calculate how quickly the weeds grow each day

Remember that a week is equal to seven days

so

f(x)=86(1.29)^{\frac{x}{7}}

Using the law of exponents

b^(x/a) = b^(x*(1/a)) = (b^(1/a))^x

so

f(x)=86[(1.29)^{\frac{1}{7}}]^{x}

f(x)=86[1.04]^{x}

therefore

The rate is approximately

1.04=1+r

r=1.04-1=0.04=4% daily

You might be interested in
15p+3(p-1)>3(2) exponent of 3 on two
Bas_tet [7]
15p + 3(p-1) > 3(2^3)
15p + 3p - 3 > 3(8)
18p - 3 > 24
18p > 24 + 3
18p > 27
p > 27/18
p > 3/2 or 1 1/2
6 0
3 years ago
Please can someone help me:<br><br> Increase £40 by 10%<br><br> Thank you
Vadim26 [7]
You would do 40 x 0.1 it would be 4. Add that 4 to the 40 and your answer would be 44
8 0
3 years ago
What is 3-4 pls pls pls
Rasek [7]

Answer: for 3) 427 hikers

Step-by-step explanation: b + 178 + b = 676

2b + 178 = 676

2b = 498

b = 249 bikers

h = 249 + 178 = 427 hikers

5 0
2 years ago
Benny is trying to learn how to ride a bike, but is terrified of falling. He did some research, and discovered that if he rides
Anestetic [448]

Answer:

a) 7.14% probability that Benny was learning to ride a bike using the training wheels

b) 28% probability that Benny was learning to ride a bike using the training wheels

Step-by-step explanation:

Bayes Theorem:

Two events, A and B.

P(B|A) = \frac{P(B)*P(A|B)}{P(A)}

In which P(B|A) is the probability of B happening when A has happened and P(A|B) is the probability of A happening when B has happened.

Benny came home crying with a bruise on his knee, after falling. His mom is trying to guess how Benny was trying to learn to ride a bike.

a) Assuming that the probability that Benny was using each of these 3 methods is equal, what is the probability that Benny was learning to ride a bike using the training wheels?

So

Event A: Benny fell

Event B: Benny was using training wheels.

The probability that Benny was using each of these 3 methods is equal

This means that P(B) = \frac{1}{3}

He did some research, and discovered that if he rides a bike with training wheels, the probability of falling is 0.1;

This means that P(A|B) = 0.1

Probability of falling:

1/3 of the time, he uses training wheels. With training wheels, the probability of falling is 0.1.

1/3 of the time, he uses the bike without training wheels. Without training wheels, the probability of falling is 0.5

1/3 of the time, he uses the unicycle, for which he has an 0.8 probability of falling. Then

P(A) = \frac{0.1 + 0.5 + 0.8}{3} = 0.4667

So

P(B|A) = \frac{\frac{1}{3}*0.1}{0.4667} = 0.0714

7.14% probability that Benny was learning to ride a bike using the training wheels

b) Since Benny's mom knows Benny so well, she knows that the probability that he was using training wheels is 0.7, regular bike is 0.2, and unicycle is 0.1. What is the probability now that Benny fell while using the training wheels?

Similar as above, just some probabilities change.

Event A: Benny fell

Event B: Benny was using training wheels.

The probability that he was using training wheels is 0.7

This means that P(B) = 0.7

He did some research, and discovered that if he rides a bike with training wheels, the probability of falling is 0.1;

This means that P(A|B) = 0.1

Probability of falling:

0.7 of the time, he uses training wheels. With training wheels, the probability of falling is 0.1.

0.2 of the time, he uses the bike without training wheels. Without training wheels, the probability of falling is 0.5

0.1 of the time, he uses the unicycle, for which he has an 0.8 probability of falling. Then

P(A) = 0.7*0.1 + 0.2*0.5 + 0.1*0.8 = 0.25

So

P(B|A) = \frac{0.7*0.1}{0.25} = 0.28

28% probability that Benny was learning to ride a bike using the training wheels

7 0
3 years ago
PLZ HLP! You ask 125 randomly chosen students to name their favorite food. There are 1500 students in the school. Predict the nu
arsen [322]

Answer:

696

Step-by-step explanation:

58/125 = 46.4%

0.464 x 1500 = 696 people

6 0
3 years ago
Other questions:
  • 12 PTS!!!!!!!!!
    8·1 answer
  • Please simplify.
    8·2 answers
  • True or False
    9·1 answer
  • The water level in a reservoir is now 52 meters. If this was 23% increase, what was the initial depth
    13·1 answer
  • A cirdie is divided up into 24 equal pieces. What percentage of the total circle area will each piece be? Round to the nearest
    10·1 answer
  • Graph the function. How is the graph a transition of f(x)=x^2
    5·1 answer
  • Please help I’m confused!
    7·2 answers
  • Two-fifths of a number
    15·2 answers
  • Observe the following graph:<br><br> What is the exact value of cos0
    5·1 answer
  • Hi would really appreciate the help asap love u all &lt;3
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!