Answer:
-6x^2+4x+5
Step-by-step explanation:
g(x)+f(x)=(-8x^2-3x+5)+(2x^2+7x)
=-8x^2-3x+5+2x^2+7x
=-8x^2+2x^2-3x+7x+5
=-6x^2+4x+5
Not sure but you can figure it out.
Answer: C. Use a larger sample size and D. Larger confidence level
Step-by-step explanation: The information will be more accurate, as it is not right now and if there are more people then there will be a huge group of people that agree on one thing.
Step-by-step explanation:
wait, I will look my lecture last year
A = first piece, b = second piece, c = third piece
a + b + c = 47
b = 3a
c = 5a + 2
a + (3a) + (5a + 2) = 47.....combine like terms
9a + 2 = 47
9a = 47 - 2
9a = 45
a = 45/9
a = 5 ft
b = 3a.....b = 3(5)....b = 15 ft
c = 5a + 2....c = 5(5) + 2.....c = 25 + 2....c = 27 ft
longest piece (c) = 27 ft
