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Ilia_Sergeevich [38]
3 years ago
5

If r is the radius of a circle and d is its diameter, which of the following is an equivalent formula for the circumference C =

2r?
 A.C = 2d
Mathematics
1 answer:
velikii [3]3 years ago
3 0
We know d = 2r
C equals either 2πr or πd
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The perimeter of a stop sign is 96
Fittoniya [83]

Answer:

x = 44

Step-by-step explanation:

4+4+2x+2x= 96

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8+4x=96

-(subtract 8 from both sides)

4x=88

-(divide by 4 on both sides to get you x alone)

x=44

4 0
3 years ago
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Ryan has $3$ red lava lamps and $3$ blue lava lamps. He arranges them in a row on a shelf randomly, then turns $3$ random lamps
hjlf

There are 6! = 720 ways of arranging the lamps.

If the leftmost lamp is red, there are 3 choices of lamp in the leftmost position, and the remaining 5 can be placed in any order, so there are 3×5! = 360 ways of arranging the lamps and the leftmost is red.

Hence there is a 360/720 = 1/2 probability that the leftmost lamp is red.

Ignoring lamp color for the moment, the probability of arranging 3 lit lamps and 3 unlit lamps is the same, 1/2.

Since Ryan arranges the lamps randomly by color, then turns 3 of them on randomly, the two events are independent. So

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7 0
2 years ago
True or false - A reflection is an example of a rigid transformation?
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True
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4 0
3 years ago
Ellen is making small bags.of confetti from a large bag of confetti that weighs 4.75 pounds .If she puts the same amount of conf
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<span>If she puts the same amount of confetti in each 5 bags  - means that she divides all amount into 5 bags.
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8 0
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Assume that I=E/(R+r) prove that 1/I=R/E+r/E ?​
Serggg [28]

Explanation:

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