The graph of f(x) = 2x3 – 19x2 + 57x – 54 is shown below. mc018-1.jpg How many roots of f(x) are rational numbers?
2 answers:
Answer: there are 3 root of f(x) which are rational numbers (2,0), (3,0) and (4.5,0)
Explanation:
Rational numbers are those that can be written in the form of p/q: q should not be equal to zero
since, the graph cuts x-axis at three points but rational are two
all integers are rational numbers
attached is the graph please have a look at it
You might be interested in
The answer is 15000
3000*6=1800
3000*-2=-6000
18000-6000=12000
12000+3000=15000
3000*6=1800
3000*-2=-6000
18000-6000=12000
12000+3000=15000
50% is 
We have two ways to do this, pick your favor:
either by fractions:
÷ 
(
Multiply by the reciprocal of which is 2(flip it)
× 2 = 
= 1.25
Or change them to decimals:
= 0.5
0.625 ÷ 0.5
0.5 I 0.625
multiply by 10 to make it easier to divide(it still gives us the same answer)
0.5 × 10 = 5
0.625 × 10 = 6.25
1.25
5 I 6.25
-5
12
-10
25
-25
0
0.625 ÷ 0.5 = 1.25
We have two ways to do this, pick your favor:
either by fractions:
(
Multiply by the reciprocal of
Or change them to decimals:
0.625 ÷ 0.5
0.5 I 0.625
multiply by 10 to make it easier to divide(it still gives us the same answer)
0.5 × 10 = 5
0.625 × 10 = 6.25
1.25
5 I 6.25
-5
12
-10
25
-25
0
0.625 ÷ 0.5 = 1.25