Answer:
a=6
b=-14
Step-by-step explanation:
Answer:
Ok so what is the question?
Step-by-step explanation:
Answer:
Third number is 12
Step-by-step explanation:
Let
be common difference &
be the third number. Set up the following equations:

Solve the simultaneous equation for x-term:

Let’s make sure that we get accurately answer. Substitute x = 12 in any equations which I’ll choose (1):

Now add each terms with common difference as 7:
-2+7 = 5
5+7 = 12
12+7 = 19
19+7 = 26
So our pattern is -2, <u>5</u>, <u>12</u>, <u>19</u>, 26. Since the question only asks for third number then the answer is 12
Answer:
Step-by-step explanation:
mid point=((7-1)/2,(-1+5)/2)=(3,2)
rDistance (D) = Speed (S) * Time (T)
S * T = r*20/60 mins = r / 3
So r/3