Answer:
Answer of question 1 :
Explanation:
Let x be the legs of ducks
And y be the legs of cows
According to the question,
2x + 4y = 52...…..(i) ( as ducks ahs two legs and as cows has 4 legs)
As he has 21 animals in total so,
x + y = 21...…..(ii)
We have make the equation. We will solve them by eliminatory method or substitution method. Here, I'll go for substitution method.
From equation (ii)
x = 21 - y....…..(iii)
Putting the value of x in equation (i),
2x + 4y = 52
2( 21 - y ) + 4y = 52
42 - 2y + 4y = 52
2y = 52 - 42
y = 10/2
y = 5 ( He has 2 cows)
putting the value of y in equation (ii)
x + y = 21
x + 5 = 21
x = 21 -5
x = 16 ( He has 16 ducks)
I would select A. Nitrogen due to the fact Nitrogen is found in most soil samples and Aluminum and mercury are metals. Also, limestone i don't find beneficial to plants whatsoever.
Answer:
I think more volume is marbles that is half its size.
The type of technology used by the customer in purchasing new furniture using a special app on a mobile phone is Augmented reality (AR)
<h3>What is Augmented reality?</h3>
Augmented reality (AR) can be defined as the developed version of the real world with the use of digital instruments. It is the use of mobile phone with a special app by businesses.
It uses visual, auditory and other sensory information onto the world in order to improve one's experiences. It has helped individuals to ease their shopping problems. New items can be purchased using mobile phone from the comfort of one's environment.
Therefore, augmented reality is the type of technology used by the customer in purchasing new furniture using a special app on a mobile phone.
Learn more about augmented reality:
brainly.com/question/9054673
