I have no idea what the question is so?
Answer:
Step-by-step explanation:
Exact form: 23/20
Decimal form: 1.15
The equivalent polynomial is 12x^2 -23x - 24.
You can get this by multiplying the two parenthesis by each other.
First start by multiplying the two front numbers:
4x * 3x = 12x^2
Then multiply the outermost numbers:
4x * -8 = -32x
Then multiply the innermost numbers:
3x * 3 = 9x
Then multiply the last numbers:
3* -8 = -24
Now combine all of them to get the above polynomial.
Answer:
(- 5, 5 )
Step-by-step explanation:
5x + 7y = 10 → (1)
- 9x + y = 50 ( add 9x to both sides )
y = 9x + 50 → (2)
substitute y = 9x + 50 into (1)
5x + 7(9x + 50) = 10
5x + 63x + 350 = 10 ( subtract 350 from both sides )
68x = - 340 ( divide both sides by 68 )
x = - 5
substitute x = - 5 into (2)
y = 9(- 5) + 50 = - 45 + 50 = 5
solution is (- 5, 5 )
Answer:
30
Step-by-step explanation:
since the width is 20, there are 2 sides, so multiply by 2 and it's 40. Subtract 40 from 100 and you get 60. 60 is both lengths combined, so divide by 2 and you have 30 as your length. :)
