Answer:

Step-by-step explanation:

2.0046

Hope this helps mark me as brainliest

The **arithmetic sequences** are as follow:

<h3>What is Arithmetic Sequence?</h3>

An **arithmetic sequence **in algebra is a **sequence** of numbers where the **difference** between every **two consecutive** **terms **is the **same**.

1)** t(n) = 5n + 4**

t(1) = 9, t(2) = 14, t(3) = 19

So,

9,14,19,...

d= 14-9 = 5

d= 19-14 =5

Hence, it is an **AP**

2) **1, 2, 4, 8 , 16**

Hence, it is **not** an **AP**

3) **3, 6, 9 ,...**

It is an **AP**

4)It is given that it is an **AP**

5) tn = **2*3^n**

t1= 6, t2= 18, t3= 54

So, 6, 18, 54,...

Hence, it is **not **an **AP**

6) **3 , 1, 1/3,...**

**It is not an AP**

7)** t(n+1)= 6*t(n)**

t(1) = -1

t(2)=-6

t(3)= -36

Hence, it is **not **an **AP**

8) **-3, 1, 5, 9**

Hence, it is an **AP**.

9) **1, 4, 9,...**

Hence, it **not** an **AP**

10)** 2,1,0,1,2,...**

It is **not** an **AP**

11) **t(n)= -2n-5**

t(1)= -7, t(2)= -9, t(3)= -11

Hence, it is an **AP**

12)** tn= (1/2)^n**

t1= 1/2, t2= 1/4, t3= 1/8

It is **not **an **AP**

Learn more about **AP **here:

brainly.com/question/24873057

**#SPJ1**

A) 2x+1+16/(x+4) is correct

length × width = Area of rectangle

length=Area/ width

(2x²+9x+20)/(x+4)= length

length= to the above answer

**Answer:**

1,41,

**Step-by-step explanation:**

**Answer:**

x = 57 y = 137

**Step-by-step explanation:**

x + 43 + 90 = 180

x + 43 + 90 - 90 = 180 - 90

x + 43 = 90

x + 43 - 43 = 90 - 43

x = 57

43 + y = 180

43 + y - 43 = 180 - 43

y = 137