Given:
Sum of arithmetic sequence is 21.
Product of arithmetic sequence is 315.
I did a manual computation. Arithmetic sequence means that there is a constant difference between the two consecutive numbers.
x + (x+2) + (x + 2 + 2) = 21
3x + 6 = 21
3x = 21 - 6
3x = 15
x = 15/3
x = 5 1st number
x + 2 = 5 + 2 = 7 2nd number
x + 2 + 2 = 5 + 2 + 2 = 9 3rd number.
5 + 7 + 9 = 21
5 x 7 x 9 = 315
5
x
+
15
+
2
x
=
24
+
4
x
Add
5
x
and
2
x
.
7
x
+
15
=
24
+
4
x
Move all terms containing
x
to the left side of the equation.
3
x
+
15
=
24
Move all terms not containing
x
to the right side of the equation.
3
x
=
9
Divide each term by
3
and simplify.
x
=
3
Domain- [-6, infinite)
Range: [0, Infinite)
This is because you get the x from the square root (-6) and the y from the invisible 0. Because it doesn’t have a negative x, it goes up.
A is (2,-4) B (-2,5) C (0,-6) D(-4,-3) E(3,0) F(5,4)
Answer: 64 years old
Step-by-step explanation:You subtract 2082 by 2018 to get the sum of 64
