Answer:
C
Step-by-step explanation:
Solving the inequality
2(x - 2) - 4x > 4 ← distribute and simplify left side
2x - 4 - 4x > 4
- 2x - 4 > 4 ( add 4 to both sides )
- 2x > 8
Divide both sides by - 2, reversing the symbol as a result of dividing by a negative quantity
x < - 4
The only value from the list less than - 4 is - 5
Thus a solution to the inequality is x = - 5
20 15 10 5 0 5 10 15 20
I already withdraw it and saw the answer
Answer:
~1.29 inches
Step-by-step explanation:
C = 2πr
C = 3r + 4.25
2πr = 3r + 4.25
2πr - 3r = 4.25
r(2π-3) = 4.25
r = 4.25/(2π-3) ≈ 1.29
Answer:
20m
Step-by-step explanation:
Given the formula that modelled the height given as;
h=30+40t-5t^2
At t = 4s
h=30+40(4)-5(4)^2
h = 30+160-80
h = 160-60
h = 110m
At t = 2s
h=30+40(2)-5(2)^2
h=30+80-20
h = 110-20
h= 90m
Difference in height = 110-90 = 20m
Hence the height is 20m higher above the ground at 4s than at 2s