<h3>
Answer: x ≥ 5</h3>
Since x is a natural number, this is the same as saying x > 4
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Explanation:
Let's solve for x
Since 
, this means x is a natural number and a value from the set {1,2,3,4,...} aka the set of positive whole numbers. Zero is not in the set of natural numbers.
So we'll need to round that 4.667 to the nearest whole number to get x ≥ 5
If we were to replace x with anything from the set {5, 6, 7, 8, ...}, then that would make the original inequality to be true.
The notation x ≥ 5 and x > 4 are identical when x is a natural number, because we're describing the same solution set of any whole number 5 or larger.
-3y = -2x - 1
y = x - 1
Substitute the y in the first problem for it's equivalent (the second problem):
-3(x - 1) = -2x - 1
Distribute
-3x + 3 = -2x - 1
Add 2x to both sides
-1 x + 3 = -1
Subtract 3 from both sides
-1x = -4
x = 4
Now put that back into one of the original equations:
y = x - 1
y = 4 - 1
y = 3
So, x is 4 and y is 3.
Answer: (a) car exhaust; (b) chemicals and (d) people
Step-by-step explanation:
Indeed, it all starts from people. They are the ones who use the cars and make the pollution happen. It is also people who use chemicals to pan and find gold, for example, polluting rivers.
Answer:
To find the inverse equation, switch the x and y variables then solve for y.
Original equation: .
y = 100 - x²
Inverse:
x = 100 - y²
y² = 100 - x
y = + √(100 - x) or the first option
Step-by-step explanation:
Answer:59.3km
Step-by-step explanation:
Convert 5346m to km to give= 5.346km
Then 4536cm to km gives 0.04536km
Total 5.39136km/day
In eleven days, multiply km per day by 11
It gives 59.3km
