Answer:
x = -3, 2, 3.
Step-by-step explanation:
f(x )= x^3 - 2x^2 - 9x + 18 We factor this by grouping:
f(x) = x^2(x - 2) - 9(x - 2)
f(x) = (x ^2- 9)(x - 2)
f(x) = (x - 3)(x + 3)(x - 2).
The zeroes of the function are:
x = -3, 2, 3.
Y intercept = -2
There is no X intercept as it is an asymptote
20% of the participants are girls and got a medal, and 33% of the girls got a medal.
<h3>What percent of the participants were girls who received medal?</h3>
First, we know that 40% of the participants were boys, so the other 60% were girls.
We know that 50% of the boys got a medal, so the percentage (in decimal form) of participants that are boys and got a medal is:
P = (0.4)*(0.5) = 0.2
So, 20% of the participants are boys and got a medal.
We know that the number of girls that got a medal is the same as the number of boys, then we also have that 20% of the participants are women who got a medal.
Then if the percentage of girls that got a medal is x (in decimal form), we must have that:
Q = (0.6)*(x) = 0.2
x = 0.2/0.6 = 0.33
x = 0.33
This means that 33% of the girls got a medal.
If you want to learn more about percentages:
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Answer:
1 1/5 miles per hour
Step-by-step explanation:
3/5 = 0.60
1/2= 0.5 hr
0.60 * 2 = 1.2
1.2 mph = 1 1/5
