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3 years ago

Factor the expression completely: x⁴ + 27x

Mathematics

2 answers:

Aleks04 [339]3 years ago

8 0

See attached picture for answer:

il63 [147K]3 years ago

7 0

I dont know if this is right but here u goo

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One dozen students each drop a brass tack six times from a height of six inches onto a level hard surface. They record the numbe

pshichka [43]

Experimental Probability = 2/3

To find the experimental probability that the tack lands point-up for student 4, we can use the following equation

$\frac{Point-up}{Attempts}\\\frac{4}{6} or\frac{2}{3}$

If this helped you a Brainliest would be appreciated!

8 0

3 years ago

) Find the coordinates of the point A' which is the symmetric point

soldier1979 [14.2K]

Let, coordinate of point A' is (x,y).

Since, A' is the symmetric point A(3, 2) with respect to the line 2x + y - 12 = 0.

So, slope of line containing A and A' will be perpendicular to the line 2x + y - 12 = 0 and also their center lies in the line too.

Now, their center is given by :

$C( \dfrac{x+3}{2}, \dfrac{y+2}{2})$

Also, product of slope will be -1 .( Since, they are parallel )

$\dfrac{y-2}{x-3} \times -2 = -1\\\\2y - 4 = x - 3\\\\2y - x = 1$

x = 2y - 1

So, $C( \dfrac{2y -1 +3}{2}, \dfrac{y+2}{2})\\\\C( \dfrac{2y + 2}{2}, \dfrac{y+2}{2})$

Also, C satisfy given line :

$2\times ( \dfrac{2y + 2}{2}) + \dfrac{y+2}{2} = 12\\\\4y + 4 + y + 2 = 24\\\\5y = 18\\\\y = \dfrac{18}{5}$

Also,

$x = 2\times \dfrac{18}{5 } - 1\\\\x = \dfrac{31}{5}$

Therefore, the symmetric points is $A'(\dfrac{31}{5}, \dfrac{18}{5})$ .

7 0

3 years ago

I need help i will mark brainiest

o-na [289]

Step-by-step explanation:

option D

16+ 125/ 6= 141/6 = 47 / 2 = 23.5

plz mark my answer as brainlist plzzzz.

hope this will be helpful to you .

8 0

2 years ago

Read 2 more answers

20:37

NISA [10]

Answer: Choice A

Ahmed started 6 floors above ground level, then he went down 8 floors

The +6 or simply 6, is positive, so he's on the 6th floor to start. Then adding on -8, which is the same as subtracting 8, moves him down 8 floors.

6 + (-8) = 6 - 8 = -2 indicates he's 2 floors below ground level, so he's in basement level 2 (perhaps some kind of parking garage).

5 0

3 years ago

Read 2 more answers

The length of the room is 3 times the width and the total area of the room is 27 square meters. What is the length of the living

Vika [28.1K]

$l=3w\\
lw=27\\\\
3w\cdot w=27\\
3w^2=27\\
w^2=9\\
w=3 \vee w=-3\\
-3\not\in\mathbb{N}\\\\
l=3\cdot3\\
l=9
$

7 0

3 years ago