Step-by-step explanation:
given,
![2k \div 3 = 6 \\ 2k \div3 \times 3 = 6 \times 3 \\ 2k = 18 \\ k = 18 \div 2 \\ = 9](https://tex.z-dn.net/?f=2k%20%5Cdiv%203%20%3D%206%20%5C%5C%202k%20%5Cdiv3%20%5Ctimes%203%20%3D%206%20%5Ctimes%203%20%5C%5C%202k%20%3D%2018%20%5C%5C%20k%20%3D%2018%20%5Cdiv%202%20%5C%5C%20%20%3D%209)
Answer:
1.199 ≤ x ≤ 1.201
Step-by-step explanation:
You want ...
|y -7| ≤ 0.005
Substituting the expression for y, you have ...
|5x+1 -7| ≤ 0.005
|x -1.2| ≤ 0.001 . . . . . simplify, divide by 5
-0.0001 ≤ x -1.2 ≤ 0.001 . . . . . "unfold" the absolute value
1.199 ≤ x ≤ 1.201 . . . . . . . . . . . .add 1.2
Answer:
3,9,27,81,243,729,2187
Step-by-step explanation:
each number up times it by 3
3x3=9 ,9×3=27, 27×3=81,81×3=243,243×3=729,729×3=2187 and so on
I don't like dividing polynomials so I'm going to set x=1 and try them out.
(1-2-14+3)/4 = -3
Of the choices, only D gives -3 when x=1
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That's as much test-taking as math. If we were to divide
x^2 - 5x + 1
-------------------------------
x + 3 | x^3 - 2x^2 - 14x + 3
x^3 + 3x^2
-5x^2 - 14x
5x^2 + 15x
x + 3
x + 3
More work, still choice D