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3 years ago

Enter the value of b when the expression 9x + b is equivalent to 3(3x + 1). BE ker notes

Mathematics

1 answer:

qwelly [4]3 years ago

6 0

Answer:

b = 3

Step-by-step explanation:

Isolate the variable, b. Note the equal sign, what you do to one side, you do to the other:

First, distribute 3 to all terms within the parenthesis:

3(3x + 1) =

3 * 3x = 9x

3 * 1 = 3

9x + b = 9x + 3

Isolate the variable, b. Subtract 9x from both sides:

9x (-9x) + b = 9x (-9x) + 3

b = 3

3 is your value for b.

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Which of the following is a root of the polynomial function below f(x)=x^3+X^2-7x+2

frosja888 [35]

Answer:f(x) = 2x³ - x² - 9x + 6

0 = 2x³ - x² - 9x + 6

0 = 2x³ + 3x² - 4x² - 3x - 6x + 6

0 = 2x³ + 3x² - 3x - 4x² - 6x + 6

0 = x(2x²) + x(3x) - x(3) - 2(2x²) - 2(3x) + 2(3)

0 = x(2x² + 3x - 3) - 2(2x² + 3x - 3)

0 = (x - 2)(2x² + 3x - 3)

0 = x - 2 or 0 = 2x² + 3x - 3

+ 2 + 2 x = -3 ± √(3)² - 4(2)(-3)

2 = x 2(2)

x = -3 ± √9 - 4(-6)

x = -3 ± √9 + 24

x = -3 ± √33

x ≈ -3 ± 5.74

x ≈ -3 + 5.74 or x ≈ -3 - 5.74

4 4

x ≈ 2.74 or x ≈ -8.74

4 4

x ≈ 0.685 or x ≈ -2.185

Step-by-step explanation:

6 0

3 years ago

What ratio is equivalent to 25/35

ikadub [295]

Answer:

5/7

Step-by-step explanation

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3 years ago

This year Benny is 12 years old . his brother lenny's age is 175% of benny's age how old is lenny

Yanka [14]

Lenny should be 21..........

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4 years ago

Equations, Their Slopes And Y-intercepts.

nataly862011 [7]

$Standard\ form:\ Ax+By=C\\\\Slope-intercept\ form:\ y=mx+b\\m-slope,\ b-y-intercept$

$Slope:\ m=\dfrac{b}{a}\\\\\uparrow b\ units\ if\ b > 0\\\downarrow b\ units\ if\ b < 0\\\leftarrow a\ units\ if\ a < 0\\\rightarrow a\ units\ if\ a > 0$

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$Standard\ form:\\\\6x-24y=-48\\--------------------------\\6x-24=-48\qquad|-6x\\-24y=-6x-48\qquad|:(-24)\\y=\dfrac{-6}{-24}x+\dfrac{-48}{-24}\\--------------------------------\\Slope-intercept\ form:\\\\y=\dfrac{1}{4}x+2\\---------------------------\\Slope:\\\\m=\dfrac{1}{4}\begin{array}{ccc}\uparrow\\\rightarrow\\\end{array}\\------------------------------\\y-intercept\to b=2\\\\(0,\ 2)$

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7 0

4 years ago

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maria [59]

Answer:

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Step-by-step explanation:

total made / hourly rate = hours worked and then you can determine if he gets a lawn mower

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3 years ago