Escuela Primaria Duarte Asignatura: Matemáticas.

Prof. Marlen L. Fernández

Resumen de la semana del 15 al 19/2/2021. Después de observar las clases, realiza las

siguientes actividades.

Tema I: Relaciona.

1-Es la más absoluta y científica de todas.

Es la que se utiliza en el sistema

internacional de medidas de temperatura.

2-Es una magnitud física que expresa el

grado o nivel de calor o frío de los cuerpos

o del ambiente.

3-Es donde siempre se emplea la escala

Kelvin.

4-Es la equivalencia de dos (2) Kelvin

5-Para pasar Kelvin a grados Celsius la

fórmula es:

°C= K- 273.15

- 456.07

plano científico

Temperatura

Kelvin

Tema II: Realiza la conversión de Kelvin a Celsius.

Observas el ejemplo: Convertir 320 Kelvin a Celsius.

Fórmula: °C= K – 273.15

Ahora sustituimos los valores.

°C= 320 – 273.15

°C = 46.85

320K = 46.85 °C

 300 kelvin a Celsius.

 330 kelvin a Celsius.

 370 kelvin a Celsius.

Tema II: Realiza los siguientes ejercicios, aplicando la regla de los signos y el orden jerárquico

de las operaciones.

a) 23 + 43 =

b) 44 – 56

c) -40 -20 =

d) 7 x 3 =

e) 36/ 9 =

f) 4x (-5) =

g) 18/ -3 =

h) -64/ -8=

i) -7x (-5) =

j) (43 - (48/6) x 3)) + 6 =

=

step-by-step explanation:

we are given a graph for system of inequalities.

in order to write the system of inequalities for the given graph, we need to find the inequality for each of the line separately.

let us find the slope of dotted line first.

taking two coordinates on the graph.

let us say (0,0) and (3,1).

let us find the slope of the line now.

slope of the dotted line would be =.

y-intercept of dotted line is y=0 only.

plugging slope m= and b=0 in slope-intercept form y=mx+b, we get

.

the line is shaded up of that dotted line.

therefore, for shading up we would take greater than inequality symbol > .

and because it's a dotted line we would take only > symbol in place of = sign in above equation of line.

therefore, inequality for dotted line would be

let us take two points (3,1) and (0,4) on the solid line.

slope of the solid line would be =.

for the solid line we have y-intercept b= 4.

plugging slope m= -1 and b=4 in slope-intercept form y=mx+b, we get

y = -1x + 4.

the line is shaded down of that solid line.

therefore, for shading down we would take less than inequality symbol < .

and because it's a solid line we would take ≤ symbol in place of = sign in above equation of line.

therefore, inequality for solid line would be

14.3

step-by-step explanation:

add all the numbers together.

9 + 12 + 15 + 16 + 17 + 17 = 86

now, divide 86 by how many numbers we have: 6.

86 / 6 = 14.3

its a trick question

step-by-step explanation:

dogs love water, just turn on the hose and it will run in circles chasing the water all day : )