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3 years ago

Find all roots: x^3-7x^2-12x = 0

Mathematics

1 answer:

Pepsi [2]3 years ago

5 0

Answer:

The roots are 0, 3 and 4.

Step-by-step explanation:

x^3-7x^2-12x = 0 Take out x:

x(x^2 - 7x - 12) = 0 Factor the expression in the brackets:

x(x - 3)(x - 4) = 0

x = 0 or x - 3 = 0 or x - 4 = 0, so

The roots are 0, 3 and 4.

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Please help, I honestly have no clue if it's each or none.

RideAnS [48]

Answer:

C there is no mode

Step-by-step explanation:

The mode is the number that appears most often. Since there is no number that appears more than once, there is no mode

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3 years ago

The area of the base of a rectangular prisim four and three fourths and the height of two and one third what is the volume

VikaD [51]

Data:
$A_{base} = 4 \frac{3}{4} = \frac{4*4+3}{4} = \frac{16+3}{4} \to A_{base} = \frac{19}{4}$

$h (height) = 2 \frac{1}{3} = \frac{3*2+1}{3} = \frac{6+1}{3} \to h (height) = \frac{7}{3}$
$v (volume) = ?$

Formula: $V = A_{b}*h$

Solving:
$V = A_{b}*h$
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$V = \frac{133}{12}$
$V = 11.08333....$
$\boxed{\boxed{V \approx 11.08}}\end{array}}\qquad\quad\checkmark$

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4 years ago

If f(x) = x2 and g(x) = x - 3, then f(g(x)) = ?

attashe74 [19]

Answer:

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Step-by-step explanation:

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3 years ago

How to find the mean of 2, 7, 6, 1, 9, 2, 4, 9

Lady_Fox [76]

Answer:

Step-by-step explanation:

Add the numbers together, then divide that by the amount of numbers

(2 + 7 + 6 + 1 + 9 + 2 + 4 + 9)/8

40/8 = 5

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3 years ago

Identify whether each cube root or square root lies between 2 and 3, 4 and 5, or 9 and 10.

leva [86]

Answer:

The cube root and square root are not given, but I'm going to give a chart that might help.

Square roots:

2 = √4

3 = √9

4 = √16

5 = √25

9 = √81

10 = √100

Cube roots:

2 = ^3√8

3 = ^3√27

4 = ^3√64

5 = ^3√125

9 = ^3√729

10 = ^3√1000

3 0

3 years ago