Answer:
Step-by-step explanation:
hello :
the nth term of an arithmetic sequence is :
An =An+(n-p)d ....a common difference is : d
let : n=15 and p=1 d= 4 A15 =43
A15 = A1 + (15-1)(4)
43= A1 +56
A1= 43-56 = - 13
Answer:
A
Step-by-step explanation:
Doesn’t pass the linear line test. 2 y values for 1 x value
4r²<span>– 16 = 84
4r</span>² = 84+16
4r²= 100
r²=25
r=√25
r=<span>±5</span>
Answer:
The answer for the equation is 
.
Step-by-step explanation:
Solve:
-Factor out the 
:
-Factor out the 
:
-Then, you rewrite the complete factored expression:
So, the answer is 
.
Answer:
28.3 m
Step-by-step explanation:
diameter=9m
circumference=pi*d
3.142*9=28.3
