Step-by-step explanation:
x^3 - 5x^2 - 4x + 20 (I'm assuming this is what you meant)
(1)^3 - 5(1)^2 - 4(1) + 20 = 1 - 5 - 4 + 20 = 12
(-1)^3 - 5(-1)^2 - 4(-1) + 20 = -1 - 5 + 4 + 20 = 18
(2)^3 - 5(2)^2 - 4(2) + 20 = 8 - 20 - 8 + 20 = 0
Now I know (x-2) is a factor of the polynomial.
Synthetic division
2 | 1. -5. -4. 20
| 2. -6. -20
-----------------------------
1. -3. -10. 0
x^2 -3x -10
Factor -> (x-5)(x+2)
So the factors of the original polynomial are (x-5), (x+2), and (x-2)
f(x) = 0 when x = -2,2,or 5
Answer:
65% as a fraction would be 13/20
Step-by-step explanation:
Answer:
2.2
Step-by-step explanation:
Answer:
Please check the explanation.
Step-by-step explanation:
Given the function
![8.2\times \frac{6.7}{0.46}](https://tex.z-dn.net/?f=8.2%5Ctimes%20%5Cfrac%7B6.7%7D%7B0.46%7D)
![\mathrm{Multiply\:fractions}:\quad \:a\times \frac{b}{c}=\frac{a\:\times \:b}{c}](https://tex.z-dn.net/?f=%5Cmathrm%7BMultiply%5C%3Afractions%7D%3A%5Cquad%20%5C%3Aa%5Ctimes%20%5Cfrac%7Bb%7D%7Bc%7D%3D%5Cfrac%7Ba%5C%3A%5Ctimes%20%5C%3Ab%7D%7Bc%7D)
![=\frac{6.7\times \:8.2}{0.46}](https://tex.z-dn.net/?f=%3D%5Cfrac%7B6.7%5Ctimes%20%5C%3A8.2%7D%7B0.46%7D)
![\mathrm{Multiply\:the\:numbers:}\:6.7\times \:8.2=54.94](https://tex.z-dn.net/?f=%5Cmathrm%7BMultiply%5C%3Athe%5C%3Anumbers%3A%7D%5C%3A6.7%5Ctimes%20%5C%3A8.2%3D54.94)
![=\frac{54.94}{0.46}](https://tex.z-dn.net/?f=%3D%5Cfrac%7B54.94%7D%7B0.46%7D)
(Round to 1 significant number)
Usually it is 7%
so. 07 × 2,500 = $175
hope this helps
IN exchange can u mark me as brainlist