Here using symbols demonstrates your feelings, and so the reader/viewer/listener and understand the topic more clearly and their reactions will be more likely as you think
Answer:
At a point X = 1.5 and Y = 4, the two lines will intersect
Explanation:
Given,
Two lines will intersect at the point with co-ordinates (X, Y) that will satisfy both the equations.
Hence,
y = 4x - 2 - Eq 1
y = 7 - 2x - Eq 2
Solving Eq 1 & 2, we get -
Eq 1 -Eq 2 will give
0 = 6X -9
6X = 9
X = 1.5
Y = 7 - 2*1.5 = 7-3 = 4
At a point X = 1.5 and Y = 4, the two lines will intersect
Explanation:(a) Was this an observational study or an experiment? Explain your reasoning. Experiment, because certain variables were controlled (he sets the screen brightness to low and then starts a movie) to determine if iPhones last longer if the screen brightness is set to low, and it proves the cause and effect relationship.
(b) What is the explanatory variable and the response variable? Response Variable- To determine if iPhones last longer if the screen brightness is set to low Explanatory variable- he sets the screen brightness of 10 of the iPhones to high and starts a movie, then the other 10 to low and starts a movie.
(c) Was a random sample used to collect the data? Yes- “he selects a random sample of 20 brand new iPhones”
Answer:
La era digital es un período continuo en la historia de la humanidad caracterizado por un cambio global de una industria tradicional establecida por la revolución industrial a una industria digitalizada e informatizada basada en la transferencia de información. Asimismo, la era digital se caracteriza por amplias oportunidades para que los individuos transmitan y reciban libremente información y acceso instantáneo, tanto a los conocimientos adquiridos como a cualquier información sobre los planes marcados por la humanidad. El inicio de la era de la información está asociado con la revolución digital de la misma manera que la Revolución Industrial marcó el inicio de la Era Industrial.
