3 years ago

State if the polygons are similar

Mathematics

1 answer:

DerKrebs [107]3 years ago

8 0

Answer:

yes they are

Step-by-step explanation:

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Find the nth term<br><br> 1, 5, 9. 13, 17

mojhsa [17]

a1 = 1 and d = 4

a(n) = a1 + d(n - 1)

a(n) = 1 + 4(n - 1)

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2 years ago

Which is an equivalent expression for 21a+35?

ki77a [65]

Answer:

7(3a + 5)

Step-by-step explanation:

Rewrite 21 as 7 · 3

Rewrite 35 as 7 · 5

Therefore,

⇒ 21a + 35 = 7 · 3a + 7 · 5

Factor out common term 7:

⇒ 7 · 3a + 7 · 5 = 7(3a + 5)

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2 years ago

a number is divided by 3 and the result is added to 1. the new result is doubled to give the final result 80. whats the number

Gnesinka [82]

78, because you have to do the inverse operation so 80/2= 40 then 40-1= 39 and 39*3 = 78

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3 years ago

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Dima020 [189]

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2 years ago

Suppose the sample space for a probability experiment has 8 elements. If elements from the sample are selected without replaceme

Gwar [14]

Answer: Number of ways $=\dfrac{8!}{8!0!}\ or \ 1$

Step-by-step explanation:

When there is no replacement , we use combination to find the number of ways to choose things.

Number of ways to choose r things out of ( with out replacement) = $^nC_r=\dfrac{n!}{r!(n-r)!}$

The number of ways to choose 8 things = $^8C_8=\dfrac{8!}{8!(8-8)!}=\dfrac{1}{0!}=1 [\because 0!=1]$

Hence, Number of ways $=\dfrac{8!}{8!0!}\ or \ 1$

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2 years ago