Answer:
in this diagram their are boxes.
on which 21 are shaded so the fraction is
Step-by-step explanation:
21/100
because their are total 100 boxes and 21 are shaded
hope you like the answer.
Answer:
<em>f(x) = 2(x + 2)(x - 3)(x - 4) or</em>
<em>f(x) = 2x^3 - 10x^2 - 4x + 48</em>
Step-by-step explanation:
If a cubic function has zeros a, b, c, then its equation is
f(x) = k(x - a)(x - b)(x c)
f(x) = k(x - (-2))(x - 3)(x - 4)
f(x) = k(x + 2)(x - 3)(x - 4)
f(5) = k(5 + 2)(5 - 3)(5 - 4)
f(5) = k(7)(2)(1)
f(5) = 14k
We are told f(5) = 28, so we set 14 equal to 28 and solve for k.
14k = 28
k = 2
f(x) = 2(x + 2)(x - 3)(x - 4)
f(x) = 2x^3 - 10x^2 - 4x + 48
Answer:
15 hours
Step-by-step explanation:
We can use the formula below to solve this:
Where
t is the time taken for BOTH to fill up the pool [6 hours]
a is the time taken by first tap [10 hours]
b is the time taken by second tap [we need to find this]
Now putting in all the into and solving for y, we get:
Hence, its gonna take 15 hours for the second tap to fill the pool alone.
M<1 = 360 / 3 = 120
m<2 = 120/2 = 60
m<3 = 180 - 90 - 60
m<3 = 30
answer
30 (third choice)