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navik [9.2K]
3 years ago
10

A dinner plate has a circumference of 106.76 cm. What is the area of the dinner plate? Use = 3.14.

Mathematics
1 answer:
meriva3 years ago
5 0
Well, first you have to figure out with the radius is to figure out what the area is.
The radius is <span>16.99cm.
From there, after doing the math, you can figure out that the area of the dinner plate is </span><span>906.85cm. (See the attached image)

<em>Hope this helps!!

Ps: Pls mark brainliest!! It will help me Rank up which I am almost there!!
</em></span>

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Answer:

2(2x-5)(2x+5)

Step-by-step explanation:

I think you meant to say 8x^2-50. If so then factoring this down should be easy. Since there is no x value in the middle the equation will have a positive and a negative number. This is also a perfect square therefore, this factors down to: 2(2x-5)(2x+5).

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3 years ago
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7. There are 12 singers auditioning for the school musical. In how many ways can the director choose first a lead singer and the
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Answer: The director can choose first a lead singer and then a stand-in for the lead singer in 132 ways.

Step-by-step explanation:

Given : The total number of singers auditioning for the school musical.= 12

The director wanted choose first a lead singer and then a stand-in for the lead singer.

We use Permutations here because order of selecting the singers matters.

The number of permutations of selecting r things out of n things = ^nP_r=\dfrac{n!}{(n-r)!}

Similarly , the number of ways to select 2 singers in an order from 12 singers

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