Answer:
4x^2 -8
Step-by-step explanation:
f(x)=3x^2-9
g(x)=x^2+1
(f+g)(x)=3x^2-9 +x^2+1
Combine like terms
= 4x^2 -8
<span> sum of the first 10 positive even numbers can be represented as
</span>
2+4+6+8+...+20
=2(1+2+3+4+..+10)
=2*(1+10)*10/2=110
so the right answer is D <span>The sum is 10x11</span>
Let's assume
rent of the one chair = x
rent of the one table = y
3x + 2y = 24
8x + 4y = 53
multiply the first equation by 2
6x + 4y = 48
8x + 4y = 53
if we subtract from last equation to previous equation,
2x = 5
x = 2.5
y = 8.25
Therefore the cost of one chair is 2.5 dollars
the cost of one table is 8.25 dollars
Answer:
c
Step-by-step explanation:
123/999 = 0.123 repeating.
