Answer:
I think you attached the wrong pdf! The pdf is about world history. Isn't this question regarding maths?
Step-by-step explanation:
If 1 pound cost $1.74 then .5 (1/2) pound should cost $0.87
Work:
1.74 x 0.5 = 0.87
1.74 - 0.87 = 0.87
Hope this helps!
Answer:
Step-by-step explanation:
This could help
https://www.mathsisfun.com/algebra/inequality-solving.html
Answer:
96
Step-by-step explanation:
commom difference = d
a₆ + a₇ = 16
a₅ + a₈ = (a₆ - d) + (a₇ + d) = a₆ + a₇ = 16
a₄ + a₉ = (a₆ - 2d) + (a₇ + 2d) = a₆ + a₇ = 16
Similarly,
a₃ + a₁₀ = 16, a₂ + a₁₁ = 16, a₁ + a₁₂ = 16
so
a₁ + a₂ + ... + a₁₁ + a₁₂ = 6 x 16 = 96
