Answer:
hey bro
Step-by-step explanation:
hwy bro
my name is inkolnown
this is yout answer
4, 7, 12, 19, 28
1st difference +3 +5 +7 +9
2nd difference +2 +2 +2
This is a geometric sequence
The form is:
an² + bn + c
2a is always = to the second difference
2a = 2
a = 1
3a + b = 2nd term - 1st term
3(1) + b = 3
3 + b = 3
b = 0
a + b + c = 1st term
1 + 0 + c = 4
1 +c = 4
c = 3
nth term of sequence {substitute all we have found}
1n² + 0 + 3
n² + 3
Answer:
Step-by-step explanation:
Let the four consecutive integers be
x ,x+1,x+2,x+3
According to the given statement the sum of 2nd and 4th is 48 so,
x+1+x+3=48
2x+4=48
2x=44
x=22
So the four consecutive integers are
x=22,
x+1=23,
x+2=24,
x+3=25
Answer:
2(x+8)
If you want the second step this is it: 2x+16
x=variable
Step-by-step explanation:
Answer:
Humans can detect sounds in a frequency range from about 20 Hz to 20 kHz.
(Human infants can actually hear frequencies slightly higher than 20 kHz, but lose some high-frequency sensitivity as they mature; the upper limit in average adults is often closer to 15–17 kHz.)
