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SpyIntel [72]
3 years ago
10

Help me please for the brainliest answer

Mathematics
1 answer:
AveGali [126]3 years ago
4 0

Answer with Step-by-step explanation:

a) {n}^{2}  + 3 \\  \\ n = 1 \\  {1}^{2}  + 3 \\ 1 + 3 \\  = 4 \\  \\ n = 2 \\  {2}^{2}  + 3 \\ 4 + 3 \\  = 7 \\  \\ n = 3 \\  {3}^{2}  + 3 \\ 9 + 3 \\  = 12 \\  \\ n = 4 \\  {4}^{2}  + 3 \\ 16 + 3 \\  = 19 \\  \\ n = 10 \\  {10}^{2}  + 3 \\ 100 + 3  \\  = 103

In this sequence,

1st term = 4

2nd term = 7

3rd term = 12

4th term = 19

10th term = 103

b)2 {n}^{2}  \\  \\ n = 1 \\ 2 \times  {1}^{2}  \\ 2 \times 1 \\  = 2 \\  \\ n = 2 \\ 2 \times  {2}^{2}  \\ 2 \times 4 \\  = 8 \\  \\ n = 3 \\ 2 \times  {3}^{2}  \\ 2 \times 9 \\  = 18 \\  \\ n = 4 \\ 2 \times  {4}^{2}  \\ 2 \times 16 \\ =   32 \\  \\ n = 10 \\ 2 \times  {10}^{2}  \\ 2 \times 100 \\  = 200

in this sequence,

1st term = 2

2nd term =8

3rd term = 18

4th term =32

10th term = 200

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Step-by-step explanation:

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The diameter of a circle is 9 m. Find the circumference \textit{to the nearest tenth}to the nearest tenth.
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Answer:

C=28.3m

Step-by-step explanation:

From the question we are told that:

Diameter d=9m

Radiusr=4.5m

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8 0
3 years ago
A country's population in 1992 was 72 million. In 1998 it was 76 million. Estimate the population in 2012 using the exponential
stepan [7]
We assume the annual percentage increase is the same. We will work out the constant k using the formula

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P = 76
A = 72
t = 6 years (from 1992 to 1998)

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76=72e^{6k}
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7 0
3 years ago
<img src="https://tex.z-dn.net/?f=552551418%20%5Cdiv%205225%20%5Ctimes%2015%20%2B%201152" id="TexFormula1" title="552551418 \div
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Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Match the slope and y-intercept with the correct linear equation. Question 1 options: m = -2, b = 3 m = 23, b = -25 m = 3, b = 5
scoray [572]

Answer:

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  • m =23,\ b =-25 → Equation 3 (y=23x - 25)
  • m = 3,\ b = 5 → Equation 1 (y=3x + 5)

Step-by-step explanation:

The equation of the line in Slope-Intercept form is:

y=mx+b

Where "m" is the slope of the line and "b" is the y-intercept.

Knowing this,  and having the equations provided in the exercise, you can identify the slope and  the y-intercept of each line.

- In Equation 1:

y=3x + 5\\\\\\m=3\\b=5

 - In Equation 2:

y =-2x+3\\\\\\m=-2\\b=3

 - In Equation 3:

y=23x - 25\\\\\\m=23\\b=-25

3 0
3 years ago
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