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Lera25 [3.4K]
2 years ago
7

Write a rule for the nth term of the arithmetic sequence 3, 11, 19, 27, 35... what is a20?

Mathematics
1 answer:
vladimir1956 [14]2 years ago
5 0
3, 11, 19, 27, 35...

a = 3
d = 11-3 = 8
a20 = a + 19d = 3 + 19*8 = 3 + 132 = 135

HOPE IT HELPS!
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The population of a small town can be described by the equation PN equals 4000+70n. Where n is the number of years after 2005. E
ruslelena [56]

Answer:

The current population (in 2005) is 4000 because it is the constant. The slope tells us how many people are added to the population, so 70 per year. For ex. 2008 (2008- 2005 = 3=> 3 x 70 = 210 => 210 + 4000 = 4210).

8 0
3 years ago
Solve the equation 8x-7=y-2 for x if y is 51. make sure to first solve for in terms y. x=?
Crank
X=7. if you need explanation message me
7 0
3 years ago
Can someone please help me
Contact [7]

slope = (6 - 1)/(-2 - 1) = 5/-3 = -5/3

Equation

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Hope it helps

6 0
3 years ago
Which numbers are perfect squares? Check all that apply.
Andrew [12]

A perfect square is a number made by squaring a whole number.

Since

  • 1^2=1;
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  • 10^2=100,

numbers 1, 16, 100 are perfect squares. You cannot find such whole number n, that

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therefore, numbers 2, 18, 32, 44, 94 are not perfect squares.

Answer: 1, 16, 100.

4 0
3 years ago
Read 2 more answers
Find the 11th partial sum of the summation of negative 7i plus 22, from i equals 1 to infinity.
marta [7]
I think you mean,

\sum_{i=1}^{\infty}(7i+22)

You can use the usual formula,

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That in this case is,

S_{11}=\frac{11}{2}(29+99)=704

Where I have used,

a_k=7\cdot k +22
3 0
2 years ago
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