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Troyanec [42]
3 years ago
10

Factorise: X(squared)-9

Mathematics
2 answers:
Gwar [14]3 years ago
7 0

(x+3)(x-3)

−

3

)

(

x

+

3

)

Explanation:

x

2

−

9

is a

difference of squares

and in general

horsena [70]3 years ago
5 0

see this photo answer plz

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Anestetic [448]
The answer is B 5x=15
3 0
3 years ago
Find the surface area S of the following cylinder.
Tanya [424]

Answer:

384π

Step-by-step explanation:

From the diagram,

Diameter ( d ) = 16

Height ( h ) = 16

To find : Surface area of Cylinder = ?

Radius ( r ) = ?

Formula : -

r = d / 2

r = 16 / 2

r = 8

Formula : -

Surface area of Cylinder = 2πr ( r + h )

Surface area of Cylinder = 2πr ( r + h )

= 2π x 8 ( 8 + 16 )

= 16π x 24

Surface area of Cylinder = 384π

4 0
3 years ago
Carmen drew line A and line B in the two scatter plots shown. one scatter plot contains 12 points indicating a negative correlat
blondinia [14]

The true statement is that only line A is a well-placed line of best fit

<h3>How to determine the true statement?</h3>

The scatter plots are not given. However, the question can still be answered

The features of the given lines of best fits are:

<u>Line A</u>

  • 12 points in total
  • Negative correlation
  • Passes through the 12 points with 6 on either sides

<u>Line B</u>

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  • Positive correlation
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For a line of best fit to be well-placed, the line must divide the points on the scatter plot equally.

From the given features, we can see that line A can be considered as a good line of best fit, because it divides the points on the scatter plot equally.

Read more about line of best fit at:

brainly.com/question/14279419

#SPJ1

4 0
2 years ago
4h+7=4h-3 i think i have it but im not sure 100% so i need hlp
SSSSS [86.1K]

                                                 <u>4h + 7 = 4h - 3</u>

Subtract  4h  from each side:            7 = -3

There is no value of  ' h ' that can make this a true statement,
so the equation has no solution.


5 0
3 years ago
Read 2 more answers
Multiplying radicals
Mazyrski [523]

\bf (\sqrt{8x})(5\sqrt{2x})\implies 5\sqrt{2x\cdot 8x}\implies 5\sqrt{16x^2}\implies 5\sqrt{4^2x^2} \\\\\\ 5\sqrt{(4x)^2}\implies 5(4x)\implies 20x

8 0
3 years ago
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