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Xelga [282]
3 years ago
11

What are the rules?​

Mathematics
2 answers:
elena-14-01-66 [18.8K]3 years ago
8 0

3rd row 420 | 21

4th row 20 | 1

5th row 100 | 5

6th row 1000 | 50

7th row 350 | 17.5

constant is 20

NISA [10]3 years ago
4 0

Answer:

See below

Step-by-step explanation:

3rd row 420 | 21

4th row 20 | 1

5th row 100 | 5

6th row 1000 | 50

7th row 350 | 17.5

constant is 20

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from 2002 to 2012, the number of a particular make of cars sold at a dealership yearly declined to 500. The number is expected t
Alinara [238K]
To determine the number of cars that will be sold by the year 2020, we will use the equation,

     N = (N1)(1 - r)^(t)

where N1 is the starting number of cars, r is the rate of the decrease, and t is the number of years from 2012. Substituting the konwn values,

   N = (500)(1 - 0.028)^(8)
    N = 398.38

The closest integer to the calculated value is 398. Thus, the answer is 398 cars. 
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3 years ago
How to solve 4n²-3n-7=0
almond37 [142]
4n^2-3n-7=0\\ \\ a=4, \ \ b=-3 \ \ c=-7\\ \\ \Delta = b^{2}-4ac = (-3)^{2}-4*4* (-7)= 9+112=121

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4 0
3 years ago
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What are the solutions of 3x? - x +4- 0 ?
Karolina [17]

Answer:

We can use quadratic formula

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Step-by-step explanation:

6 0
3 years ago
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Work out the highest common factor (HCF) of 18 and 30
Paraphin [41]

18 = 2\times 3 \times 3\\\\30 = 2 \times 3 \times 5\\\\\text{HCF}~ = 2\times 3 = 6

3 0
2 years ago
Please help !! what’s the answer? i don’t understand !!
dedylja [7]

Answer:

992

Step-by-step explanation:

You must convert the meter the kilometer by miltiplying by 1000

and when you do it you must multiply 0.992 by 1000 since it is a fraction .

or you can work it this way :

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7 0
3 years ago
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