The arithmetic sequences are 3rd one, and 5th one as they are increasing or decreasing by a constant rate of change
Answer:
Step-by-step explanation:
That last number there, the constant, represents the height from which the projectile was launched. So the platform is 108 m high.
Answer:
2.1
Step-by-step explanation:
let unknown number be x
3/4x + 3.5= 6.5 - 2/3x
collect like terms
3/4x+2/3x=6.5 - 3.5
17/12x = 3
cross multiply
12 * 3=17x
36=17x
x=36/17
x=2.1
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Answer:
91
Step-by-step explanation:
Distribute the 7 (7*4+7*9) then add which is 91