Answer:
4
Step-by-step explanation:
Answer:5.25
3(1/7 + 1/x) = 1
3([x + 7]/7x) = 1
3x + 21 = 7x
4x = 21
x = 21/4 OR 5.25
=5x^2+4x−5
Let's simplify step-by-step.
3x2−5x+1+2x2+9x−6
=3x2+−5x+1+2x2+9x+−6
Combine Like Terms:
=(3x2+2x2)+(−5x+9x)+(1+−6)
=5x2+4x+−5
D
Answer :
an = -9 + (9-1) 5
an = -9 + (8) 5
an = -9 + 40
an = 31 is the answer
Hope it helped
