Slope intercept is almost the best for everything.
point slope is for when you only know the points on a line
standard form is for when solving systems of equations
Answer:

And solving we got:

If we subtract 100 from both sides we got:



Step-by-step explanation:
For this case we have the following equation given:

We want to find a general expression given by:

Where the center is (h.k) and the radius is r.
We can begin completing the squares of the equation given and we got:

And solving we got:

If we subtract 100 from both sides we got:

Then we can conclude that the center is:

And the radius would be:

ax -5a - ax+ a2= ax-ax=0 5a+a2
Volume of a cylinder= (height) x area of the base (circle)
We know the height = 160 cm (given), let's find the radius of the base.
The circumference of the base = 87.92 = 2πR==> R=87.92/(2π) =13.993 cm
Area of circle = πR²=π(13.993)² = 615.128 cm²
Hence the volume of the cylinder = 615.128 x 160 = 92,420.48 cm³
Answer:
15C is 59F
Step-by-step explanation:
As an equation, F = (1 4/5)C + 32. 1 and 4/5 is the same as 9/5.
Substitute 15 for C.
F = (9/5)C + 32
F = (9/5)(15) + 32 Multiply 15 by the top number in 9/5
F = 135/5 + 32 Convert 32 to a fraction over 5
F = 135/5 + 160/5 Add the numerators under the same denominator
F = 295/5 Divide
F = 59 Degrees in Farenheit
Therefore 15°C is 59°F.