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monitta
3 years ago
15

If the radius of a coin is 20cm ,find its surface area.​

Mathematics
1 answer:
jasenka [17]3 years ago
4 0

Answer:

It's surface area is 1257.14cm^2

Step-by-step explanation:

area=22/7×20cm×20cm

=3.14×20cm×20cm

=1257.14cm^2

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Which statement about rational and irrational numbers is always true?
DIA [1.3K]

Answer:

D.Any irrational number added to any irrational number is equal to a rational number.

5 0
3 years ago
Umm pls help me ik how to do it but not sure on this specific one
Lapatulllka [165]

9514 1404 393

Answer:

  -8, +9

Step-by-step explanation:

You need factors of (6)(-12) = -72 that have a sum of +1.

From your knowledge of multiplication tables, you know that 72 = 8·9. Then -72 = (-8)(9), and those two factors have a sum of +1.

  6x^2 +x -12

  = 6x^2 +9x -8x -12

  = 3x(2x +3) -4(2x +3)

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8 0
3 years ago
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Soloha48 [4]

for number one, the mean would be 45 minutes

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5 0
3 years ago
What is the slope of a line perpendicular to a line that contains the points (-5, 4) and (-2, 4)?
larisa86 [58]
Answer: B. No slope


Explanation: The slope of a perpendicular line will always be the negative reciprocal of the slope of the given line. That means that you first have to find the slope of the given line by using the two points on that line:

Point 1: (-5, 4)
Point 2: (-2, 4)
Slope=(y2-y1)/(x2-x1)
Slope=(4-4)/((-2)-(-5))
Slope=0/3

If the slope of the initial line is 0/3 and the slope of its perpendicular line is the negative reciprocal of that slope, that means the slope of the perpendicular line will be -3/0 which is undefined because you can’t divide -3 by 0.

Therefore, the slope of the perpendicular line is undefined, or in other words, there isn’t an exact slope.



Hope that helps シ
3 0
3 years ago
In Exercise,solve for<br> 0 &lt; x - 5
uysha [10]

Answer:

x > 5

Step-by-step explanation:

0 < x-5. Add 5 to both sides...

+5 +5

5 < x Rearrange answer

x > 5

3 0
3 years ago
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