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
Nata [24]
3 years ago
12

There are 21 students in a class. The median age of the students is 23. The oldest student is 29.

Mathematics
1 answer:
Varvara68 [4.7K]3 years ago
5 0

Answer:

1) At least one (the 11th) student is 23 (years old), <u>Must be true</u>

2) Some students are younger than 15 <u>Could be true</u>

Step-by-step explanation:

1) The given parameters are;

The number of student in the class = 21

The median age of the student = 23

The age of the oldest student = 29

Therefore, given that the median age = The age of the (n + 1)/2 th student

Where;

n = The number of student in the class = 21

∴ The median age = The age of the (21 + 1)/2 th = 11 th student, when the age of the students are arranged in increasing order, therefore, we have;

At least one (the 11th) student is 23 (years old), <u>Must be true</u>

2) Given that there are 10 students with ages equal to or lower than the  median age, and the difference between the median age and the age of the oldest student = 29 - 23 = 6 years, we have;

Some students are younger than 15 <u>Could be true</u>

You might be interested in
Joesl's father is 45. He is 15 years older than twice joe's age. How old Is joe?
tresset_1 [31]
Joe is 15, 45-15=30 30/2=15
6 0
3 years ago
Lori is running in a marathon, which is 28.4 miles she ran 0.1 of it already. How far has Lori run?
hoa [83]
So she ran the 0.1 of the 28.4
That is she ran 1% of 28.4 miles
0.1 * 28.4 is 2.84

Hope this helps :)
7 0
3 years ago
Need help ASAP! due soon
Pani-rosa [81]

Answer:if this helps it’s -3/2 and the slope is 8 :) C is the best answer!

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Find the solution set of this inequality |11x - 22| &gt; 22<br><br> Need help ASAP!!
MissTica

Your answer should be x < 0 or x > 4.

<em>I'm 3 Brainliests away from ranking up, so one would be much appreciated. Thank you, and good luck!</em>

7 0
3 years ago
Justin bought 5 apples and 4 oranges for £45. On another occasion, he bought 2 apples and 8 oranges which cost £50. Find the cos
Vitek1552 [10]

Answer:

the cost of 3 apples and 7 oranges be £15 and £35 respectively

Step-by-step explanation:

Let us assume the apple be x

And, the oranges be y

Now according to the question

5x + 4y = £45

And,

2x + 8y = £50

Multiply by 2 in equation 1

So,

10x + 8y = £90

2x + 8y = £50

8x = £40

x = £5

And, y be

5(£5) + 4y = £45

£25 + 4y = £45

4y = 20

y = £5

So, the cost of 3 apples and 7 oranges be £15 and £35 respectively

5 0
2 years ago
Other questions:
  • Three hundred four million, eight hundred thousand, four hundred in expanded form?
    13·2 answers
  • A circle has radius of 18 cm. Find the area of the smaller of the two regions determined by a chord with length of 18√2 cm . Hin
    7·2 answers
  • Which of these is the most logical order for the statements and reasons?
    11·2 answers
  • How many centimeters are in 2 inches?<br><br><br> Answer: There are 5.08 centimeters in 2 inches
    10·2 answers
  • A bicycle is originally priced at $60. The online retailer gives a discount and the bicycle is now priced at $42. Enter the perc
    8·2 answers
  • Please select the best answer from the choices provided​
    12·1 answer
  • Purchased a book rs 500 sold 20%profit find its actual profit and sel<br>ling price​
    5·1 answer
  • Anyone here for talk?​
    5·2 answers
  • 16.12 divided by 52 QUICK
    13·2 answers
  • What's the slope and y-intercept?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!