2 tonnes =2000kg
2000kg÷ 96=21.05 (2dp)
therefore it would take around 21 years for the elephant to increase his mass 2 tonnes
Mark the two equations below as A and B,
A: 3x+y=4
B: 2x+y=7
Because there's a y for both A and B, elimination (or linear combination, depending on the book) works well. If we add both equations we get 2y for the y terms. What if we subtracted instead. y - y = 0, and we eliminate the y terms. For subtracting, we multiply B by -1.
3x + y = 4
-2x - y = -7
Adding both equations (remember to change the signs on B) gives that 1x = -3 and so x = -3.
Now we take x = -3 and put into an original equation. Let's go into A.
3x+y=4
3 * -3 + y = 4 letting x = -3
-9 + y = 4
y = 13 adding 9 on both sides
So x = -3 and y = 13, or the ordered pair (-3, 13) - the 2nd one given - is our solution.
Answer:
Step-by-step explanation:
A removeable discontinuity is always found in the denominator of a rational function and is one that can be reduced away with an identical term in the numerator. It is still, however, a problem because it causes the denominator to equal 0 if filled in with the necessary value of x. In my function above, the terms (x + 5) in the numerator and denominator can cancel each other out, leaving a hole in your graph at -5 since x doesn't exist at -5, but the x + 1 doesn't have anything to cancel out with, so this will present as a vertical asymptote in your graph at x = -1, a nonremoveable discontinuity.
25% is the percent that was taken away from the original price. 75% is how much of the original price is still needed to be paid after the discount
