Answer:
x=3, -3.
Step-by-step explanation:
x^2+9=18
x^2=18-9
x^2=9
x=sqrt(9)
x=3, -3
Answer:
What least number should be added to 15871 to make it a perfect Square
A)
A polygon is a closed shape so there must be at least three sides. Therefore, the least value that n can be would be three.
b)
n value
3 0
n(n-3)/2
3(3-3)/3
3(0)/3
0/3
0
4 2
n(n-3)/2
4(4-3)/2
4(1)/2
4/2
2
5 5
n(n-3)/2
5(5-3)/2
5(2)/2
10/2
5
16, 5, 25, 6, 36, 7, 49, 8, 64, 9, 81, 10, 100
The pattern is starting at 1 then squaring it. Then, you move to the next number after one, then square it, and so on.
Answer:
20 hrs
Step-by-step explanation:
20 hours: The volume of the pool is (length) × (width) × (height), or 30×10×2=600 cubic meters. Use a standard work equation, RT= W, where W represents the total work of 600 m
3
.
0.5×t=600
t=1200 minutes
Convert this time to hours by dividing by 60: 1200÷60=20 hours.
Alternatively, you could convert first:
hr
0.5m
3
×60min=
hr
30m
3
Next, use the standard work equation:
30 t = 600
t = 20 hours