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guapka [62]
3 years ago
14

In an AP, if the 12th term is -13 and the sum of

Mathematics
1 answer:
Natalka [10]3 years ago
8 0

Answer:

the 20 terms is combine the 24 term

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A choral conductor has 1542 singers in her choir, some of them are professional singers. The conductor wants to estimate what pe
stellarik [79]

Answer:

The value is  \r p  =  2.9\%

Step-by-step explanation:

From the question we are told that

   The  number of singers is  N  =  1542

   The  sample  size is  n  =  650

    The  number the number of singers who are professional is k =  19

The  proportion of professional singers is mathematically represented as

       p  =  \frac{k}{n}

=>      p  =  \frac{19}{650}

=>    p  =  0.029

The  percentage estimate of singers who are professional is

      \r p  =  100 * 0.029

       \r p  =  2.9\%

5 0
3 years ago
Compare and order 5.2, -5.6, 3 9/10, the square root of 21??
lara [203]

I would first suggest turning them all to one thing, like all decimals, or fractions. I chose decimals.

5.2, -5.6, 3.9, √21. To solve the square root, you have to simplify it. There is the square root of 3, times the square root of 7 which gets 21. These can't be simplified, so we can't simplify through that. But, the closest whole number that is a square root is 16. You can check by multiplying the same number together twice. Doing this will get you about 4.58

5.2, -5.6, 3.9, and ≈ 4.58. This is a simple ordering problem now.

It ends up as -5.6, 3 9/10, √21, 5.2

There are 2 decimals, one negative. There is one square root, and one mixed number. The square root is an infinite decimal when simplified

Hope this helps! ~Malachi


8 0
3 years ago
Find the total area
Mila [183]

Answer:

800

Step-by-step explanation:

Find the area of everything first.

30 times 38 = 1140. ( This would be if everything was shaded)

Next, find the area of the mini square.

To do that, calculate the length first.

30-7-6= Length= 17

20 times 17 = 340

1140-340= 800

7 0
3 years ago
Christian Woodruff has $160 to spend on parking and admission to Hershey. The parking will cost $12, and admission tickets will
Minchanka [31]

Answer:

7 people

Step-by-step explanation:

Start with $160. and subtract $12 for parking because you have to pay that no matter how many people you buy tickets for.

160-12=148

Now you can see how many tickets you can buy with $148 by dividing by the price of the ticket which is $20.50

148/20.5=7.21951219512

You can buy 7 tickets

if you do the math, there is $4.50 leftover

6 0
3 years ago
Read 2 more answers
Please help. Serious answers please
Alex_Xolod [135]

Answer:

(a+b)< c

if you were to add a+b they you be greater than c, look at the diagram.

It can't be = or >

Hope this helps

plz like & mark brainly

3 0
3 years ago
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