For this, I will be factoring by grouping to solve for y.
Firstly, factor y^3 + 5y^2 and -9y - 45 separately, Make sure that they have the same quantity on the inside:
Now you can rewrite it as . However we are not finished factoring.
Now with y^2 - 9, we will apply the difference of squares rule, which is . Apply it as such:
Now that it is completely factored, we can apply the Zero Product Property and solve for y:
<u>In short, y = -5, -3, and 3.</u>
Well what does star equal?
Answer:
D
Step-by-step explanation:
The equation of a circle centred at the origin is
x² + y² = r² ( where r is the radius ) , then
x² + y² = ( )² , that is
x² + y² = 249 → D
1/4 of 80 is 20 so there's 60 left the second day.
2/5 of 60 is 24.
60-24=36
There are 36 students left after the second day.
Answer:600
Step-by-step explanation:
Make the number 6 x 1000
Take 10% of the 1000
Now put the 6 and the 100 together