Answer:
a) 2x + 1, 4x + 7
b) L = 19 cm, W = 7 cm, A = 133 cm^2
Step-by-step explanation:
8x^2 + 18x + 7
ax^2 + bx + c
ac = 8 * 7 = 56
56 = 4 * 14
8x^2 + 18x + 7 =
= 8x^2 + 14x + 4x + 7
= 2x(4x + 7) + 1(4x + 7)
= (2x + 1)(4x + 7)
a) 2x + 1, 4x + 7
b)
2(3) + 1 = 7
4(3) + 7 = 19
A = LW = 19(7) = 133
You're 2 solutions are
(9,0)(-5,0)
Sam completed 2/3 of the one on Wednesday and 1/3 of the one on Thursday, so he has done 3 thirds of both.
now, a whole is 1, in this case for thirds that'd be 3/3 for a whole crossword, for two crosswords that'd be 3/3 + 3/3 or 6 thirds, and Sam has completed only 3 thirds of that, 3 thirds is half of 6 thirds.
D. Is the answer because its the only one that makes sense.
D I think not sure tho but it might be