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koban [17]
3 years ago
12

The sum of first 'n' terms. Sn of a particular Arithmetic Progression is given by Sn=12n-2n^2. Find the first term and the commo

n difference.
Mathematics
1 answer:
Vitek1552 [10]3 years ago
4 0

Answer:

d=-4 and a=10

Step-by-step explanation:

The sum of a arithmetic sequence is given by (n/2)*(2a+(n-1)d). Comparing coefficients with the given Sn, we have; a-d/2=12 and d/2=-2, d=-4 and a=10.

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(1) the diameter is 20 inches whats the radius? And whats the circumference?

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(2) the diameter 11 inches whats the radius? And whats the circumference?

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8 0
3 years ago
Carrie ate some of the oranges that her mother brought home from the grocery store of the oranges her mother bought 1/4 were lef
Whitepunk [10]
From the given scenario, it can be deduced that Carrie ate 3/5 of what was left of the oranges that were left. To determine the fraction that Carrie ate, we will multiply 3/5 by 1/4. This is equal to 3/20. Thus, Carrie ate approximately 3/20 of the oranges left. 
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3 years ago
Is the data set 3,3,3,4,4,5,25 skewed right skewed left or normally distributed?
OverLord2011 [107]
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3 0
3 years ago
Suppose you are bending stainless steel wire to make the earring shown below. The
lakkis [162]

Given parameters:

Length of earring hook  = 1.5cm

Length of given wire = 45cm

Dimension of the triangle = 3.2cm, 3.2cm and 2.1cm

Unknown:

Number of earrings that can be made from the wire = ?

To solve this problem, we need to calculate the total length of the earring we want to make.

  Total earring length  = Perimeter of earring + length of earring hook

                                      = 3.2 + 3.2 + 2.1 + 1.5  

                                      = 10cm

Now the length of the wire is 45cm,

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  But this is not reasonable, therefore, we can only forge 4 complete earrings from the given length with 5cm of wire remaining.

The number of earrings that can be made is 4.

4 0
3 years ago
CAN U PLZ ANSWER IT?
Vadim26 [7]
So you subtitute into the equation
so T=RH
if R=10 and H=35
so 10 per hour so
10 times 35 or (R times H)
so 350=T

b.
if is R=12 and H=40
subsitute and get
12 times 40 (RH) which is
480=T
4 0
3 years ago
Read 2 more answers
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