Answer:
We know that our world is in 3 dimensions i.e. there are three directions and so, three co-ordinates are required.
Now, if we have to find a position of an object lying on a flat surface, this means that there are only two directions and so, two co-ordinates are needed.
So, we can define the domain ( xy-axis ) in such a way that there are two axis - horizontal where right area have positive values & left area has negative values and vertical where upward side have positive values & downward side has negative values.
For e.g. if we want to find the position of a pen on the table. We will make our own xy-axis and see in which quadrant the pen lies.
Let us say that the pen lies at (2,3), this means that the position of pen is in the first quadrant or it is 2 units to the right of y-axis and 3 units up to the x-axis.
This way we can see that two directions are sufficient to find the position of an object placed on a flat surface.
Position of an object on a flat surface can be adequately described using measurements in the vertical and horizontal directions from a certain reference point. This concept is inherent in the use of vector quantities in physics which allow us to describe motion in two perpendicular directions.
To describe the position of an object on a flat surface, we can use two measures: the vertical and horizontal displacement from a certain reference point. This reference point is often called the origin in a Cartesian coordinate system, which is a type of frame of reference.
Let's imagine you're looking at a map. If we want to specify a location on that map, we can describe it in terms of its distance east (or west) and north (or south) from a particular point. This technique uses horizontal and vertical measurements to describe the position.
This concept is inherent in the idea of vector quantities. In two dimensions, a vector describes motion in two perpendicular directions, such as vertical and horizontal. The principle that motions along perpendicular axes are independent allows us to analyze these two directions separately. Each vector in this context has vertical and horizontal components, and the length of the vector (representing the object's total displacement) is calculated based on these two components.
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-4t
4t
-10t
10t
The simplification of the expression 5t + (t - 3) - [(7t + 5) - (8 - 3t)] using PEMDAS rule is -4t.
Thus, option 1 is correct.
A method of reducing an expression, equation, or problem to a more concise or straightforward form is referred to as simplification.
Initially the small bracket then curly brackets and at last large brackets are required to solve according to the laws of simplification using PEMDAS rules.
The given expression can be simplified as:
5t + (t - 3) - [(7t + 5) - (8 - 3t)]
5t+t-3-[7t+5-8+3t]
5t+t -3-7t-5+8-3t
-4t
The simplification of the expression 5t + (t - 3) - [(7t + 5) - (8 - 3t)] is -4t.
Thus, option 1 is correct.
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There are 1.3 miles in 2,200 yards.
It is the conversion of one unit to another unit with its standard conversion.
Examples:
1 hour = 60 minutes
1 minute = 60 seconds
1 km = 1000 m
We have,
2,200 yards ____(1)
1 mile = 1760 yards _____(2)
Now,
From (1) and (2),
1 mile = 1760 yards
Multiply 2,200/1760 on both sides.
2,200/1760 x 1 mile = 2,200/1760 x 1760 yards
1.25 miles = 2,200 yards
Rounding to the nearest tenths.
1.3 miles = 2,200 yards
Thus,
There are 1.3 miles in 2,200 yards.
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Answer:
1.25 mi
Step-by-step explanation:
First, we want to convert a yard into feet; recall 1 yard = 3 feet.
Then we want to divide that by the number of feet in a mile 1 mile = 5280feet.
So 2200*3 =6600, then divide by 5280
6600/5280 = 1.25 mi
2200 yard is 1.25 miles
Answer with Step-by-step explanation:
Let Aaron's height be represented by x
and Peter's height be represented by y
Aaron is 15 centimeters taller than Peter.
i.e. x=y+15
Five times Aaron's height exceeds two times Peter's height by 525 centimeters.
i.e. 5x=2y+525
Putting x=y+15 in 5x=2y+525
5(y+15)=2y+525
5y+75=2y+525
5y-2y=525-75
3y=450
Dividing both sides by 3,we get
y=150
Putting the value of y in x=y+15,we get
x=150+15
x=165
Hence, system of linear equations that relates Aaron's height (x) and Peter's height (y) is:
x=y+15
5x=2y+525
Aaron's height is 165 centimeters
and Peter's height is 150 centimeters
Answer:
m = (- 3, 3 )
Step-by-step explanation:
given endpoints (x₁, y₁ ) and (x₂, y₂ ) then the midpoint M is
M = ( , ) ← midpoint formula
let (x₁, y₁ ) = g (8, - 6 ) and (x₂, y₂ ) = h (- 14, 12 ) , them midpoint m is
m = ( , ) = ( , ) = (- 3, 3 )