Answer:
1 / (x-2)(x+3)
Step-by-step explanation:
Given in the question the expression:
(x + 1) / (x² + x - 6) ÷ (x² + 5x + 4) / (x+4)
factorisation of (x² + x - 6) = (x-2)(x+3) by using quadratic equation
(x + 1) / (x-2)(x+3) ÷ (x² + 5x + 4) / (x+4)
Taking reciprocal to convert ÷ into ×
(x + 1) / (x-2)(x+3) x (x+4) / (x² + 5x + 4)
factorisation of (x² + 5x + 4) = (x+1)(x+4) by using quadratic equation
(x + 1) / (x-2)(x+3) x (x+4) / (x+1)(x+4)
cancel (x + 1) from both expression
1 / (x-2)(x+3) x (x+4) / (x+4)
cancel (x+4)
1 / (x-2)(x+3) Simplified form
Answer:
1 = 52
2 = 68
3 = 40
4 = 25
Step-by-step explanation:
1 = (4 + 3)^2 + (12 / 4)
7^2 + 3
49 + 3
= 52
2 = (12 x 9 - 7^2) + 9
(108 - 49) + 9
59 + 9
= 68
3 = (30 - 2) / 7 + 6^2
28 / 7 + 36
4 + 36
= 40
4 = (2 x 7 + 4^2) - 5
(14 + 16) - 5
30 - 5
= 25
Hope this helps!! Brainliest plz??
Let x= number of 3 cent stamps
let y=number of 5 cent stamps
x+y=8
3x+5y=36
3x+5y=36 3x-5y=36
-3(x+y=8) . -3y-3y=-24
2y=12
y=6
x+6=8
-6 . -6
x=2
There will be 2 3 cent stamps and 6 5 cent stamps
Answer:
Its a quadratic function y = 2x^2.
Step-by-step explanation:
8 = 2(-2)^2
2 = 2(-1)^2
0 = 2(0)^2
2 = 2(1)^2
8 = 2(2)^2
So the function is y = 2x^2 ( a quadratic function)
<u><em>subsitution</em></u> means subsituteing something for another and getting the answer
the way to do this is to get an easy equation and make it equal to only one placeholder so
y=2x
so you can subsitute y for 2x anywhere you see a y
3x+y=5
subsitutute
3x+2x=5
5x=5
divide both sides by 5
x=1
subsitute
y=2(1)
y=2
<u><em>elimination</em></u> is when you elimintate one of the terms by adding the equations together and canceling som of them out
so y=2x
subtract y from both sides
0=2x-y or 2x-y=0
add this to the second equation
3x+2x+y-y=0+5
5x=5
divide both sides by 5
x=1
subsitute
y=2(1)
y=2
x=1
y=2
