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Ulleksa [173]
3 years ago
15

If a1 = 7 and an = An-1 – 3 then find the value of a4.

Mathematics
1 answer:
V125BC [204]3 years ago
8 0

Answer:

-2

Step-by-step explanation:

If a1 = 7 and an = An-1 – 3

a4 = a3 - 3

Get a2;

a2 = a1 - 3

a2 = 7 - 3

a2 = 4

Get a3;

a3 = a2 - 3

a3 = 4 - 3

a3 = 1

GEt the required a4

a4 = a3 - 3

a4 = 1 - 3

a4  = -2

Hence the value of a4 is -2

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When two numbers are multiplied to get product, each number is called a(n)?
Mademuasel [1]

Answer:

Each number is called a factor

Step-by-step explanation:

The multiplication of two numbers is equivalent to adding as many copies of one of them

7 0
3 years ago
Khloe and Emma work at a furniture store. Khloe is paid $245 per week plus 9.5% of her total sales in dollars, xx, which can be
ale4655 [162]

Answer: Their weekly pay would be the same if xx equals $1,600

Step-by-step explanation: The first and most important step is to identify what the question requires, and that is, what is the value of the unknown in the equation of their weekly incomes that would make their pay to be the same? Their weekly pay as per individual is given as follows;

Khloe = 245 + 0.095x ———(1)

Emma = 285 + 0.07x ———(2)

Simply put, we need to find the value of x when equation (1) equals equation (2)

245 + 0.095x = 285 + 0.07x

Collect like terms and we now have

0.095x - 0.07x = 285 - 245

0.025x = 40

Divide both sides of the equation by 0.025

x = 1600

Therefore their weekly pay would be at the same level, if x equals $1600

6 0
3 years ago
Which of the following are solutions to | x+3 = 4x - 7? Check all that apply.
just olya [345]

Answer:

x=​5/​4, ​3/10

6 0
3 years ago
–2x + y = 3 2x – y = 4 Using elimination to solve this system results in the equation .
tankabanditka [31]

Answer:

1 = x and -2 = y

I am fairly happy with this answer

6 0
3 years ago
Can yoy please help solve yhis problem.2/5b+1=11​
shusha [124]

Answer:

(2/5)*b+1 = -11 // + 11

(2/5)*b+1+11 = 0

2/5*b+12 = 0 // - 12

2/5*b = -12 // : 2/5

b = -12/2/5

b = -30

b = -30

Step-by-step explanation:

hope this helped :)

5 0
3 years ago
Read 2 more answers
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