An equation:
It is used to express exact values.
Therefore, we will use an equation when when know that the quantity given is strictly equal to a given value.
Examples:
1- Price of a kilo of apples is $2
This is translated as ........> cost of 1 kilo = $2
2- The length of a ruler is 30 cm
This is translated as ......> length = 30 cm
An inequality:
It is used to show relation or compare between a quantity and a value. Therefore, we use it when we find keywords as "at least, at most, greater than, less than, ..... etc"
Example:
1- The distance between two cities is at least 20 miles.
This means that the distance can be 20 miles or more
This is translated as:
distance ≥ 20 miles
ΔThe Answer to your question is D).<span>109.2%</span>Δ
Easy and simple:::::
4(2x-3)=3+8x-11
Solve for x, i.e separate x in one side and the other terms in the other side
8x - 12 = 8x - 8
8x - 8x = -8 + 12
This equation has all real number as solutions.....infinite number of solutions
Answer:
x = 10; y = 20
Step-by-step explanation:
y = 2x
y = x +10
Substitute y of the second equation with 2x.
2x = x + 10
x = 10
y = 2x = 2(10)
y = 20
Answer: x = 10; y = 20
(-infinity sign,-7) (-7, infinity sign)
