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Lesechka [4]
3 years ago
12

4×9×8^-1×3^-3/6^-1 .Ans is 1 but I want the method.​

Mathematics
2 answers:
lana66690 [7]3 years ago
5 0

Answer:

Hi, Hope this will help :-)

podryga [215]3 years ago
5 0
  • Answer:

<em>1</em>

  • Step-by-step explanation:

<em>(4×9×8⁻¹×3⁻³)/6⁻¹ =</em>

<em>= (2²×3²×2⁻³×3⁻³)/2⁻¹×3⁻¹</em>

<em>= (2²×2⁻³×3²×3⁻³)/2⁻¹×3⁻¹</em>

<em>= 2⁻¹×3⁻¹/2⁻¹×3⁻¹</em>

<em>= 1</em>

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The area of a circle is 43.25cm2.<br> Find the length of the radius rounded to 2 DP.
Monica [59]

Answer:

3.71 cm

Step-by-step explanation:

Hi there!

Area of a circle equation: A=\pi r^2 where r is the radius

Plug in the area 43.25 cm²

43.25=\pi r^2

Divide both sides by π to isolate r²

\frac{43.25}{\pi} =\frac{\pi r^2}{\pi} \\\frac{43.25}{\pi}=r^2

Take the square root of both sides to isolate r

\sqrt{\frac{43.25}{\pi}} =r\\3.71=r

Therefore, the length of the radius rounded to 2 decimal points is 3.71 cm.

I hope this helps!

8 0
3 years ago
Solve 2(4 x + 3) &lt; 5 x + 21. { x | x &lt; 9} { x | x &gt; -5} { x | x &gt; -9} { x | x &lt; 5}
Nesterboy [21]

Answer:

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Step-by-step explanation:

2(4 x + 3) < 5 x + 21

Distribute

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Subtract 5x from each side

8x -5x +6 < 5x-5x+21

3x +6 < 21

Subtract 6 from each side

3x+6-6 <21-6

3x <15

Divide each side by 3

3x/3 <15/3

x <5

5 0
3 years ago
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Yuliya22 [10]

Answer:

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Step-by-step explanation:

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Not A because regular means all sides are equal.
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3 years ago
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