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kipiarov [429]
3 years ago
9

Is it correct to say that there is no object with order of rotational symmetry as 0.Justify

Mathematics
1 answer:
irinina [24]3 years ago
3 0
No, we cannot say <span>that there is no object with an order of rotational symmetry as 0.

For example: 

</span><span>What do you think the rotational symmetry order of an alphabet "A" is?</span><span>

</span><span>The alphabet "A" has got rotational symmetry of order 1, which means </span>NO rotational symmetry is there for letter "A" because we can't rotate it.
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From a shipment of 65 transistors, 6 of which are defective, a sample of 5 transistors is selected at random.
Vladimir79 [104]

Answer:

a) 8259888

b) 34220

c) 45057474

Step-by-step explanation:

Given,

The total number of transistor = 65,

In which, the defective transistor = 6,

So, the number of non defective transistor = 65 - 6 = 59,

Since, out of these transistor 5 are selected,

a) Thus, the number of ways = the total possible combination of 5 transistors = {65}C_ 5

=\frac{65!}{(65-5)!5!}

=8259888

b) The number of samples that contains exactly 3 defective transistors = the possible combination of exactly 3 defective transistors = {6}C_3\times {59}C_2

=\frac{6!}{(6-3)!3!}\times \frac{59!}{(59-2)!\times 2!}

=20\times 1711

=34220

c) The number of sample without any defective transistor = The possible combination of 0 defective transistor = ^6C_0\times ^{59}C_5

=1\times 45057474

=45057474

5 0
3 years ago
Please answer correctly !!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!!!
zepelin [54]

Answer:

Step-by-step explanation:

∠DEF is congruent to ∠EFA

4 0
3 years ago
Condense log₂ 4 + log₂ 5
yawa3891 [41]

Answer:   \log_2(20)

Work Shown:

\log_2(4) + \log_2(5)\\\\\log_2(4*5)\\\\\log_2(20)\\\\

The rule used is \log_{b}(\text{x}) + \log_{b}(\text{y}) = \log_{b}(\text{xy})

7 0
2 years ago
Read 2 more answers
What is the sum of the series?
lana66690 [7]

Answer:

44

Step-by-step explanation:

substitute k = 1, 2, 3, 4 into 2k² - 4 and sum the terms

k = 1 : 2(1)² - 4 = 2 - 4 = - 2

k = 2 : 2(2)² - 4 = 8 - 4 = 4

k = 3 : 2(3)² - 4 = 18 - 4 = 14

k = 4 : 2(4)² - 4 = 32 - 4 = 28

sum = - 2 + 4 + 14 + 28 = 44

8 0
4 years ago
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15 + 13d + 12 helpppp
VladimirAG [237]

Answer:

its 13d+27

Step-by-step explanation:

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3 years ago
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