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
Elina [12.6K]
3 years ago
12

Adding school fairest 20% of the people are under 16 years old one third of the people remaining are teachers if there are 21 te

achers at the fair how many people are there at the fair Total
Mathematics
1 answer:
dedylja [7]3 years ago
4 0
<span>In the fairest school 20% are below 16 years old
1/3 are teachers which is equals to = 21
Let’s start solving:
=> 1/3 of 100% = ( 100 / 3 = 33.33% )
thus 33.33% = 21
=> 21 x 3 = 63, is the total number of people in the school.
Let’s try solving the number of people below 16 years old
Then there are 20% of it:
=> 63 * .20 = 12.6
Thus, there are around 13 people who are 16 years old younger.</span>



You might be interested in
Pls help it’s not 2 and not 10
eduard

Answer:

11.18

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What is a forecast error
Mama L [17]

Answer:In statistics, a forecast error is the difference between the actual or real and the predicted or forecast value of a time series

Step-by-step explanation:find the Mean Absolute Percent Error (MAPE) of your forecast. Statistically MAPE is defined as the average of percentage errors.

4 0
3 years ago
Given that a trapezoid has the following dimensions, find the area. Area = ________ units2
rjkz [21]
The formula for the area of a trapezoid is A = a+b/2 * h. So just plug in the dimensions.
A = 5 + 3/2 * 5
A = 8/2 * 5
A = 4 * 5
A = 20 units²
I hope this helps love! :)
8 0
3 years ago
Police estimate that​ 25% of drivers drive without their seat belts. If they stop 6 drivers at​ random, find the probability tha
Furkat [3]

Answer:

17.80% probability that all of them are wearing their seat belts.

Step-by-step explanation:

For each driver stopped, there are only two possible outcomes. Either they are wearing their seatbelts, or they are not. The drivers are chosen at random, which mean that the probability of a driver wearing their seatbelts is independent from other drivers. So we use the normal probability distribution to solve this problem.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

Police estimate that​ 25% of drivers drive without their seat belts.

This means that 75% wear their seatbelts, so p = 0.75

If they stop 6 drivers at​ random, find the probability that all of them are wearing their seat belts.

This is P(X = 6).

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 6) = C_{6,6}.(0.75)^{6}.(0.25)^{0} = 0.1780

17.80% probability that all of them are wearing their seat belts.

3 0
3 years ago
Read 2 more answers
What is the numerical expression for the phrase? <br><br> Add 17 to the product of 3/4 and 12
nevsk [136]
Product = multiply

3/4 x 12 = 9
17 + 9 = 26
4 0
3 years ago
Read 2 more answers
Other questions:
  • If the length of the side of a square is doubled, what is the ratio of the areas of the original square to the area of the new s
    7·1 answer
  • g The tensile 0.2 percent offset yield strength of AISI 1137 cold-drawn steel bars up to 1 inch in diameter from 2 mills and 25
    8·1 answer
  • The Martinez family is having their swimming pool filled with water by a professional company. A tanker truck can fill the pool
    15·1 answer
  • The perfect squares between 50 and 104
    8·2 answers
  • PLZ HELP!! I WILL NAME BRAINLIEST thxs
    14·1 answer
  • Two adjacent supplementary angles are
    8·2 answers
  • The sum of two numbers is -41. The difference of the two numbers is -17. What are the two numbers?
    9·1 answer
  • In the figure below, ∆ABC ~ ∆QRS.
    12·2 answers
  • Which of the following arrangement of the numbers 75, 4, 3,100 forms a proportion?
    12·1 answer
  • Write an equation in standard form of the line passing through the points (12, 3) and (-3, 8).
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!