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Karolina [17]
3 years ago
8

Find the first three term if the general nth term is T = 2-n

Mathematics
1 answer:
Elena L [17]3 years ago
8 0

Tn = 2n - 6

to find first term ,n= 1

substitute n for 1 in the equation

T1 = 2(1) - 6

T1 = 2 - 6 =-4

to find second term , n =2

substitute n for 2 in the equation

T2 = 2(2) - 6

T2 = 4 - 6 = -2

to find third term, n = 3

substitute n for 3 in the equation

T3 = 2(3) - 6

T3 = 6–6 = 0

FIRST TERM = -4

SECOND TERM = -2

THIRD TERM = 0

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Alik [6]
Yes it is a function. It is a horizontal line. 

Every point on this line is of the form (x,4) where x can be any number you want. The y coordinate is fixed at 4 and cannot change. Two points on this line are (0,4) and (1,4). The horizontal line goes through 4 on the vertical y axis. 

Why is it a function? Because it is impossible to draw a vertical line through more than one point on the graph of y = 4. The graph passes the vertical line test. Put another way, for any x input, there is exactly one y output. 

Side Note: y = 4 is the same as y = 0x+4. Note how its in the form y = mx+b
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8 0
4 years ago
What is the value of x? 1 2 x + 2 = x - 1 4 A) - 2 9 B) - 9 2 C) 1 9 D) 9 2
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3 years ago
Please help the picture is
asambeis [7]

The walls are vertical so the angle opposite X would be a right angle which is 90 degrees.

X would be 180 - 90 - 35 = 55 degrees

X and 2y - 5 are complementary angles which add together to equal 90:

2y - 5 + 55 = 90

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Step-by-step explanation:

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3 years ago
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Rashid [163]

Answer:

Second option: x + x + 18

Step-by-step explanation:

You know that "x" represents the Avery's weigth (in pounds).

Let be "y" the weight of Jada in pounds.

Since Jada weighs 18 pounds more than Avery, you can write this expression:

y=x+18

The weight of them together is:

weight\ together=x+y

Substituting, you get:

weight\ together=x+x+18

Therefore, the expression that tells how much the two of them weigh together is the one provided in the second option:

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4 years ago
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