Answer:
(-∞, 5 U 7 , ∞)
Step-by-step explanation:
Given the inequality expressions
d – 4 > 3 or d – 4 < 1
For d - 4 > 3
Add 4 to both sides
d-4 + 4 > 3 + 4
d > 7
7 < d
this means that d is greater than 7,
(7 , ∞)
For d - 4 < 1
Add 4 to both sides
d - 4 + 4 < 1 + 4
d < 5
This means d is less than 5
(-∞, 5)
The required solution is (-∞, 5 U 7 , ∞)
<span>altogether there are 42 marbles, there are 30 other marbles not colored orange, 30:42 simplified is 15:21</span>
Answer: x = 7 , y = 3
Step-by-step explanation:
Since they are integers , it means they are whole numbers.
Let the first number be x and the second number be y , then ,interpreting the question , we have
x + y = 10 ...................................... equation 1
x - y = 4 ........................................ equation 2
solving the resulting simultaneous linear equation by substitution method.
From equation 2 , make x the subject of the formula, that is
x = 4 + y .............. equation 3
substitute x = 4 + y into equation 1 , equation 1 becomes
4 + y + y = 10
4 + 2y = 10
subtract 4 from both sides
2y = 10 - 4
2y = 6
divide through by 2
y = 3
substitute y = 3 into equation 3 to find the value of x
x = 4 + y
x = 4 + 3
x = 7
Therefore : x= 7 and y = 3
Answer:
Based on the graph, the bird is initially flying from a certain height and not the ground(A). It flies from a certain height to reach a higher altitude and then flies steadily without changing it's altitude until reaches a certain point(B). The bird is perhaps at rest and not moving before it starts to descent down to the ground. The altitude decreases over time at C.
Step-by-step explanation:
