Answer:
(- 4, - 12 ) , (4, 12 )
Step-by-step explanation:
Given the 2 equations
y = 3x → (1)
y = x² + 3x - 16 → (2)
Substitute y = x² + 3x - 16 into (1)
x² + 3x - 16 = 3x ( subtract 3x from both sides )
x² - 16 = 0 ( add 16 to both sides )
x² = 16 ( take the square root of both sides )
x = ±
= ± 4
Substitute these values into (1) for corresponding values of y
x = - 4 : y = 3 × - 4 = - 12 ⇒ (- 4, - 12 )
x = 4 : y = 3 × 4 = 12 ⇒ (4, 12 )
You have to make a proportion:
12+x/8=8/x
Then cross multiply to solve for x
So the container is 85 g or it holds 85gs
Answer:
42.39 
Step-by-step explanation:
cone formula: 
diameter to radius
9 cm to 4.5
1.) 
2.) 
3.) 
4.) divide 121.5 by 3

5.) multiply by 3.14
V = 42.39