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Olegator [25]
3 years ago
13

Find an explicit formula for the arithmetic sequence 170,85,0,-85..., d(n)=

Mathematics
1 answer:
irinina [24]3 years ago
8 0

Answer:

d(n) = 85 * ( 3 - n )

Step-by-step explanation:

Let's find the common difference of the terms (if any).

The common difference is = 85 - 170 = 0 - 85 = -85 - 0 = -85

For an arithmatic sequence with first term a, common difference d,

  nth term = a + ( n - 1 ) * d

So, d(n) = 170 + ( n - 1 ) * (-85)

             = 255 - 85n

             = 85 ( 3 - n )

[ If there's any mistake, please inform me ]

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The sum of two numbers is 103. The larger number is 5 less than twice the smaller number. Find both numbers.
andrezito [222]

Answer:

x=67

y=36

Step-by-step explanation:

x+y=103

2y=x+5

8 0
3 years ago
Complete the statement<br> 66.4mg = g<br> 66,400<br><br> 6.64<br><br> 0.0664<br><br> 6,640
Ierofanga [76]

Answer:

1 g = 1000 mg

⇒ 1 mg = 1/1000 g

1 mg = 0.001 g

5 0
3 years ago
Is 4-heap Nim with heaps of sizes 22, 19, 14, and 11 balanced or unbalanced? Player I's first move is to remove 6 coins from the
nadya68 [22]

Answer:

Player II should remove 14 coins from the heap of size 22.

Step-by-step explanation:

To properly answer this this question, we need to understand the principle and what it is exactly is being asked.

This question revolves round a game of Nim

What is a game of Nim: This is a strategic mathematical game whereby,  two opposing sides or opponent take turns taking away objects from a load or piles. On each turn, a player remove at least an object and may remove any number of objects provided they all come from the same heap/pile.

Now, referring back to the question, we should first understand that:

                        22₂ = 1 0 1 1 0

                         19₂= 1 0 0 1 1

                         14₂= 0 1 1 1 0

                          11₂= 0 1 0 1 1

and also that the “bit sums” are all even, so this is a balanced game.

However, after Player I removes 6 coins from the heap of size 19, Player II should remove 14 coins from the heap of size 22.

3 0
3 years ago
The equation of the graphed line is 2x – 3y = 12.
Viefleur [7K]

Answer:

<em>6</em>

Step-by-step explanation:

The x-intercept is the x-coordinate of the point on the line that intersects the x-axis. At the x-axis, all y-coordinates are 0. Let y = 0, and solve for x.

2x – 3y = 12

2x - 3(0) = 12

2x = 12

x = 6

6 0
3 years ago
Read 2 more answers
Shane started FFA with a pig that weighed 120 pounds. After six weeks her pig gained 30% in weight. what is the new weight of sh
grigory [225]
First, we must figure out how much weight the pig gained and then add that number to the pig’s initial weight.

To figure out how much weight the pig gained, we must find 30% of 120.

Because 30% = 0.3, 30% of 120 = 0.3 * 120 ( the word of indicates multiplication in mathematics).

0.3 * 120 = 36

Therefore, the pig gained 36 pounds.

To find the pig’s new weight, we must add 36 pounds to the pig’s original 120 pound weight.

36 + 120 = 156

Therefore, the new weight of Shane’s pig is 156 pounds.

Hope this helps!
8 0
3 years ago
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