Answer:
5x - 4y = 20
Step-by-step explanation:
First find slope
(5- -10)/(8- -4) = 15/12 = 5/4
(y - 5) = 5/4 (x - 8), multiply everything by 4 so you don't have fractions
4y - 20 = 5x - 40
5x - 4y = 20
Its "7/10"
Just think of it as ➡7÷10 = 0.7; 7÷ 10 = .7
Look for the number that comes to that decimal when you're dividing
Answer:
(a) 
(b) nth term: 
Step-by-step explanation:
Solving (a)
Given

The first 3 terms.
When n = 1



When n = 2



When n = 3



So, the first three terms are:

Solving (b)
Given

Required
The nth term
The sequence is arithmetic.
So, first calculate the common difference (d)


The nth term is then calculated as:

Where

So:
and 


Collect like terms


Answer:
A
Step-by-step explanation:
18=1×18=18
2×9=18
. 3×6=18
6×3=18
9×2=18
18×1=18
30=1×30=30
2×15=30
3×10=30
5×6=30
6×5=30
10×3=30
15×2=30
30×1=30
Answer:
If I really understood the question the result is $54.44
Step-by-step explanation:
240.93-130.47= 110.46
110.46-56.02=54.44