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
Fiesta28 [93]
2 years ago
9

If there are 300 houseflies in the study, how many of them will live longer than 21 days?

Mathematics
1 answer:
Levart [38]2 years ago
8 0

The 48 flies of them will live longer than 21 days if there are 300 houseflies in the study.

<h3>What is a normal distribution?</h3>

It's the probability curve of a continuous distribution that's most likely symmetric around the mean. On the Z curve, at Z=0, the chance is 50-50. A bell-shaped curve is another name for it.

We have mean u = 18 days

SD = 3 days

X = 21 days

From the formula:

Z = (X - u)/SD

Z = (21 - 18)/3 = 1

P(x<21) = 0.84134

P(x>21) = 1 - P(x<21) = 0.15866

Number of flies = 300×0.15866 = 47.59 ≈ 48 flies

Thus, the 48 flies of them will live longer than 21 days if there are 300 houseflies in the study.

Learn more about the normal distribution here:

brainly.com/question/12421652

#SPJ1

You might be interested in
Convert x = 4 to polar form
dezoksy [38]

Answer: r = 4 sec θ

Explanation: Using: x = r cos θ then r cos θ = 4 ⇒ r = 4 cos θ = 4 sec θ

4 0
3 years ago
How many pieces 3 and three fifths in. long can be cut from 28 metal rods each 15 in.​ long? Disregard waste.
Murrr4er [49]

Answer: 112 pieces


Step-by-step explanation:

1. Rewrite 3^{\frac{3}{5}} as a decimal. Divide the numerator and the denominator of the fractional part and add it to the integer part:

3+0.6=3.6in

2. You know that each metal rod is 15 inches long. Then, you must divide the lenght of each one by 3.6:

pieces=\frac{15in}{3.6in}4.16

3. The waste is 0.16, therefore, you obtain 4 pieces from a metal rod. The total pieces obtained from 28 metal rods are:

total=4pieces*28=112pieces

8 0
3 years ago
Read 2 more answers
List the integers within the interval <br><img src="https://tex.z-dn.net/?f=%20%208%20%5Cleqslant%20x%20%3C%2016" id="TexFormula
Vera_Pavlovna [14]

Answer:

list the integers within the interval

Step-by-step explanation:

Greater than or equal to 8, so 8 is part of this list.

Less than 16, so 16 is not in this list.

6 0
2 years ago
Read 2 more answers
Maggie has $40 to buy a new dress and hair accessory for her school dance the dress she wants cost $35.75 the cost of her hair a
jonny [76]

Answer:

Yes Maggie has enough money to purchase the dress and hair accessory.

Step-by-step explanation:

Dress = $35.75

Hair accessory = $2.80

Total amount of money = $40

Does her have enough money?

Total Money in pocket - (Dress cost + hair accessory)

 $40.00 - ($35.75 + 2.80)

  $40.00 - ($36.00 + $3.00)     Round to the nearest dollar

  $40.00 - $39.00 = $1.00

Yes

8 0
2 years ago
Which of the following rational numbers is equal to 3/5?
Vedmedyk [2.9K]
3/5 = 60%
20 ÷ 5 = 4
3 x 4 = 12

Answer is A) 12/20
4 0
3 years ago
Read 2 more answers
Other questions:
  • On a camping trip, people are divided into several groups. Each group needs to fill a 3-quart (3/4 -gallon) jug with water for c
    9·1 answer
  • DUPLICATE. WITH ATTACHMENTS
    14·1 answer
  • Mrs. Battle is designing a brick walkway to install in her front yard.
    5·1 answer
  • Determine the slope of the line that passes through the points (-8, -7) and (10, 1).
    14·1 answer
  • Hellppp what statement is true???
    10·1 answer
  • The f(x)=2^x and g(x)=f(x+k). If k=-5, what can be concluded about the graph of g(x).
    9·2 answers
  • One adult and 3 student tickets cost $11.50. Three adult and 2 student tickets cost $17.00.
    10·1 answer
  • The length of a given rectangle is six more than twice its width. Write a fully simplified expression to represent its perimeter
    11·1 answer
  • Andy is awake for 16 hours every day. he spends 15% of the time he is awake swimming laps at the pool. what is the expression th
    10·2 answers
  • Chef Rita is cooking for a Sunday brunch. She knows that 22 pancakes can feed 8 people. She is wondering how many people (p) she
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!