If all the beads in a jar are either orange or purple and the ratio of orange to purple beads is 6 to 5, what is the ratio of th
1 answer:
Answer:
a. purple to orange =
b. purple to all beads=
c. all beads to orange=
Step-by-step explanation:
Given:
Colour of beads in jar = orange or purple
The ratio of orange to purple beads = 6 : 5
Solution:
Let number of orange beads be= 6x
Number of purple beads=5x
Total no of beads= 6x+5x=11x
a. Ratio of purple to orange.
Ratio of purple to orange=
Ratio of purple to orange=
Ratio of purple to orange=
b. Ratio of purple to all beads
Ratio of purple to all beads=
Ratio of purple to all beads=
Ratio of purple to all beads=
c. Ratio of all beads to orange
Ratio of purple to all beads=
Ratio of purple to all beads=
Ratio of purple to all beads=
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Answer:
b.
Step-by-step explanation:
We have to look at sign changes in f(x) to determine the possible positive real roots.
There is only one sign change here, between the -8x and the +4. So that means there is only 1 possible real positive root.
Now we have to look at sign changes in f(-x) to determine the possible negative real roots.
There are 3 sign changes here. That means there are either 3 negative roots or 3-2 = 1 negative root. So we have:
1 positive
3 or 1 negative
We need to pair them up now with all the possible combinations.
If we have 1 positive and 1 negative, we have to have 2 imaginary
If we have 1 positive and 3 negative, we have to have 0 imaginary
Keep in mind that the total number or roots--positive, negative, imaginary--have to add up to equal the degree of the polynomial. This is a 4th degree polynomial, so we will have 4 roots.