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Naily [24]
3 years ago
8

Consider the arithmetic sequence 10, 8, 6, 4, ....

Mathematics
2 answers:
Gekata [30.6K]3 years ago
4 0

Answer:

12 - 2n

Step-by-step explanation:

The n th term of an arithmetic sequence is

a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = 10 and d = 8 - 10 = - 2, thus

a_{n} = 10 - 2(n - 1) = 10 - 2n + 2 = 12 - 2n

Triss [41]3 years ago
3 0

Answer:

12-2n

Step-by-step explanation:

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elena55 [62]
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for 18x + 6y: 6(3x + y) is the factored form. if your symbol is subtraction, it's basically the same, you just change the sign.
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4 years ago
Convert 68°F to degrees Celsius.
tekilochka [14]

Answer:

C=5(68°-32)9

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Given: ∠N ≅ ∠S, line ℓ bisects at Q.
bixtya [17]

Answer:

angle NQT equals angle STR

Step-by-step explanation:

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5 0
3 years ago
What is the slope of a trend line that passes through the points (5, 80) and (7, 65)?
Vlad [161]

Answer:

-15/2 or -7.5 or -7½

Negative StartFraction 15 Over 2 EndFraction

Step-by-step explanation:

Slope or gradient of a line is the ratio of change in y co-ordinates to the change in x co-ordinates.

Therefore;

M=∆y÷∆x

The change in y co-ordinates is given by

∆y=y2-y1

Similarly, change in x co-ordinates is given by

∆x=x2-x1

Given the two points as (5, 80) and (7, 65)

X1=5 Y1=80

X2=7 Y2=65

∆y=65-80=-15

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Negative StartFraction 15 Over 2 EndFraction

4 0
3 years ago
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7. The value of x varies directly with y, and
umka21 [38]

Answer:

x = y - 7

Step-by-step explanation:

1. Create an equation

<em><u>Concept</u></em> :

If x = 5, then subtracting 5 from both sides gives you x - 5 = 0. Do this to both variables

If x - 5 = 0 and y - 12 = 0, those two statements equal the same thing. So

x - 5 = y - 12

2. Add 5 to both sides to isolate variable X

x = y  -  7

3. (Optional) Plug given values into new equation to check answers

(5) = (12) - 7

5 = 5 is a true statement

4 0
3 years ago
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