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Law Incorporation [45]
3 years ago
9

There are five students of different ages. Their median age is 13 years A) what are two possibilities for the ages of the three

oldest students? B) if each student is a different age, how many students must be younger than 13? C) in complete sentences, describe what a median is to another student in the class. Pretend that the student was absent the day you learned about medians.
Mathematics
1 answer:
Levart [38]3 years ago
6 0
A) the median is the middle measurement. Their ages could be 13, 14 and 15.
B) 2 students must be younger than 13
C) Like I said, the median is the middle measurement. If you have a list of numbers, you have to order them and take the middle number.

:) Have a nice day and maybe consider grading this answer brainliest? <3
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What does x equal<br> 18 ÷ x = -2<br> -9<br> 9<br> -6<br> -8
BARSIC [14]
<h3>Answer:</h3>

x=-9

<h3>Solution:</h3>
  • 18÷x=-2
  • Multiply both sides by x
  • 18=-2x
  • -2x=18
  • Now, divide both sides by -2:
  • x=-9

Hope it helps.

Do comment if you have any query.

8 0
2 years ago
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La edad de Alejandro equivale a las dos quintas partes de la edad de Andrea. Si la suma de
Mariana [72]

Las edades de Andrea y Alejandro son 40 y 16 años, respectivamente.

En esta pregunta debemos traducir el enunciado en ecuaciones algebraicas y resolver el sistema resultante. Tras una lectura cuidadosa tenemos el siguiente sistema de ecuaciones:

y = \frac{2}{5}\cdot x (1)

x + y = 56 (2)

Donde:

  • x - Edad de Andrea, en años.
  • y - Edad de Alejandro, en años.

A continuación, procedemos a resolver el sistema:

(1) en (2):

x + \frac{2}{5}\cdot x = 56

\frac{7}{5}\cdot x = 56

7\cdot x = 280

x = 40

Por (1):

y = \frac{2}{5}\cdot 40

y = 16

Las edades de Andrea y Alejandro son 40 y 16 años, respectivamente.

Para aprender más sobre álgebra, invitamos cordialmente a ver esta pregunta verificada: brainly.com/question/8122776

8 0
3 years ago
Emery earns money mowing his neighbors' lawns. He charges $1.25 per square yard for each lawn he mows. His neighbors, the Flores
aleksandr82 [10.1K]

Answer: 4.2 yards

Step-by-step explanation:

Let x = length of the Flores' lawn in yards.

Then, Area of lawn = 4x  sq. yard [Area of rectangle = width x length , here width = 4 yds (given)]

Charge per square yard = $1.25

Charge for Flores lawn = 1.25 × (Area of lawn)

= 1.25 (4x)

= 5x

As per given,

5x=21\\\\\Rightarrow\ x=\dfrac{21}{5}\\\\\Rightarrow\ x=4.2

Hence, the length of the Flores's lawn = 4.2 yards

5 0
3 years ago
Increase £55 by 37%<br> Give your answer rounded to 2 DP.
bogdanovich [222]

Answer:

75.35

Step-by-step explanation:

I hope this helped

5 0
3 years ago
What is the value of the expression 1/2x(6x9x1)+15
Orlov [11]
1/2x(6x9x1)+15
1/2x(6x9)+15
1/2x54+15
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42

4 0
3 years ago
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