Answer: The radius of the new water tower is approximately 21 ft^3
Step-by-step explanation:
So we know the volume of the Water Tower is 66840 ft^3 and the new one's volume will hold 3/5 as much. so you will multiply 66840 by 3/5 to find the volume of the new one.
66840 * 3/5 = 40104 so the new water tower will hold 40104 cubic feet of water.
Now to find the radius we will use the formula v= 4/3
r^3
40104 = 4/3 * * r^3
40104= 4.1887* r^3
r= 21
Answer:
He isn't correct. He spent 25% more time this week than the previous one.
Step-by-step explanation:
We will make proportion.
first week 20 hours is 100%
second week 25 hours is x%
20 : 25 = 100 : x
When we multiply external and internal members we get:
20x =25 · 100 => x = 2500/20 = 125%
We conclude the following:
Evan spent 125% of the time in hours compared to the last week or Evan spent 25% more time this week than the previous one.
God with you!!!
-10 -10y = 10
+10 +10
-10y = 20
20/-10 = -2
Y = -2
Answer:
(2, 3 )
Step-by-step explanation:
Given the 2 equations
3x - 5y = - 9 → (1)
x + 2y = 8 → (2)
Multiplying (2) by - 3 and adding to (1) will eliminate the x- term, that is
- 3x - 6y = - 24 → (3)
Add (1) and (3) term by term to eliminate x
(3x - 3x) + (- 5y - 6y) = (- 9 - 24), that is
- 11y = - 33 ( divide both sides by - 11 )
y = 3
Substitute y = 3 into either of the 2 equations and solve for x
Substituting in (2)
x + 2(3) = 8
x + 6 = 8 ( subtract 6 from both sides )
x = 2
Solution is (2, 3 )
Answer:
(2,3)
Step-by-step explanation:
