(1,-4)
x=1, y=-4.
Solve for the first variable in one of the equations, then substitute the result into the other equation.
V=(4/3)pir^3
4.5pi=(4/3)pir^3
divide both sides by pi
4.5=(4/3)r^3
times 3/4 both sides
3.375=r^3
cube root both sides
1.5=r
radius is 1.5cm
To solve for x, put all of the angle measurements on one side of an equation and set it equal to 360, because the sum of any exterior angles is 360 degrees. hope this helped!
Answer:
<h2>1).</h2>
(5a3b)(2ab)
Expand
That's
15ab( 2ab )
we have the answer as
<h3>30a²b²</h3>
<h2>2).</h2>
5y(-y² + 7y - 2)
Expand
That's
<h3>- 5y³ + 35y² - 10y</h3>
Hope this helps you
