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
eduard
3 years ago
13

There are 60 boys in the third year, 24 of whom study chemistry. What percentage of third year boys study chemistry.

Mathematics
2 answers:
quester [9]3 years ago
8 0

Answer:

40%

Step-by-step explanation:

24/60 = .4

igor_vitrenko [27]3 years ago
6 0

Answer:

40%

Step-by-step explanation:

Divide the total by the amount possible.

You might be interested in
A factory produces some batteries daily. 7/8 of the batteries are packaged immediately. 2/3 of the
frozen [14]

Answer:

\[\frac{1}{24}\]

Step-by-step explanation:

Let the total number of batteries produced daily be represented by x.

7/8 of the batteries are packaged immediately.

So the total number of packaged batteries = \[\frac{7x}{8}\]

Remaining batteries = \[x-\frac{7x}{8}\]

= \[\frac{x}{8}\]

Two third of the remaining batteries are sent to charity.

So the total number of batteries sent to charity= \[\frac{2}{3} * \frac{x}{8}\]

= \[\frac{x}{12}\]

Remaining batteries are faulty.

So the total number of faulty batteries = \[\frac{x}{8} - \frac{x}{12}\]

= \[\frac{3x - 2x}{24}\]

= \[\frac{x}{24}\]

So the faction of batteries which are faulty =

= \[\frac{x}{24} \div x\]

= \[\frac{1}{24}\]

3 0
3 years ago
Pls, help due in 30 mins!! it is math.
taurus [48]

Answer:

2. scale factor 2 | x = 4.5

3. scale factor 1.5 | x = 12

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Meredith deposits $1,400 into an account that earns 3% annual simple interest. How many years will it take Meredth to earn $294
Valentin [98]

Answer:

21 years

Step-by-step explanation:

8 0
3 years ago
Graph the function y = |1.6x – 2| – 3.2. Over which interval is the function increasing?
klasskru [66]
You are to graph   <span>y = |1.6x – 2| – 3.2.  I trust you know that the graph of y=|x| is v-shaped, opening up, with vertex at (0,0).

Let's rewrite </span><span>y = |1.6x – 2| – 3.2 by factoring 1.6 out of  |1.6x - 2|:

                     </span><span>y = 1.6*|x – 2/1.6| – 3.2

This tells us that the vertex of   </span><span>y = |1.6x – 2| – 3.2   is at (2/1.6,  -3.2).  If you need an explanation of why this is, please ask.

Plot the vertex at (1.25, -3.2).
Find the y-intercept:  Let x = 0 in  </span><span>y = |1.6x – 2| – 3.2 and find y:

                                                      y = 2-3.2 = -1.2

The y-intercept is located at 0, -1.2)

Plot this y-intercept.

Now draw a straight line from the vertex to this y-intercept.  Reflect that line across the y-axis to obtain the other half of the graph.</span>
8 0
3 years ago
Read 2 more answers
A sample has a sample proportion of 0.3. which sample size will produce the
jasenka [17]

The sample size of 36 will produce the widest 95% confidence interval when estimating the population parameter option (b) is correct.

<h3>What are population and sample?</h3>

It is described as a collection of data with the same entity that is linked to a problem. The sample is a subset of the population, yet it is still a part of it.

We have:

A sample has a sample proportion of 0.3.

Level of confidence = 95%

At the same confidence level, the larger the sample size, the narrower the confidence interval.

As we have a 95% confidence interval the sample size should be lower.

The sample size from the option = 36 (lower value)

Thus, the sample size of 36 will produce the widest 95% confidence interval when estimating the population parameter option (b) is correct.

Learn more about the population and sample here:

brainly.com/question/9295991

#SPJ1

7 0
2 years ago
Other questions:
  • I am the largest number that rounds to 241.699 when rounded to the nearest thousandth. What number am I? Please explain how you
    7·1 answer
  • Does anyone know how to do this I need help
    13·1 answer
  • In 2016, the population of the United States was approximately 3.24 x 10^8. It is expected that the population will be about 3.9
    11·1 answer
  • O is the center of the circle. calculate the values of x and justify your answer
    11·1 answer
  • What's the equation of a line with slope 5 and y-intercept -2
    8·2 answers
  • Based on a table provided in your reading material, determine the monthly
    9·1 answer
  • Evaluate <br> |-9|= <br><br> Please helpp
    6·2 answers
  • If the function f(x) = x 2 has the domain {0, 1, 4, 9}, what is its range?
    5·1 answer
  • PLEASE HELP NOW!!!!!!!!!
    10·1 answer
  • WHOEVER ANSWERS THIS WILL GET BRAINLIEST!!! SERIOUS ANSWERS ONLY!!!
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!