Answer:
radius=3.19 km
Step-by-step explanation:
32/3.14159=r^2
r=3.19 km
To find y = mx + b you need to determine the slope. To find slope use the formula
m = y2 - y1 / x2 - x1
Use two points on the graph such as (4, 100) and (12, 300)
Now plug it into the formula
m = 300 - 100 / 12 - 4
m = 200 / 8
m = 25
Now we know the slope, but we need to find the y-intercept.
y = mx + b
y = 25x + b
Substitute one of the points (4, 100) as the y value and x value to find b, the y intercept
100 = 25(4) + b
100 = 100+ b
100 - 100 = b
0 = b
Now plug in your formula
Y = 25x + 0
y = 25x
Answer:
50.3% of profit.
Step-by-step explanation:
English muffins are on sale for $1.99 per package, but only if you buy five packages.
Therefore, the price of five packages of muffins on sale is $(1.99 × 5) = $9.95.
There is a $1.00 discount per package on sale.
So, the ordinary price per package of muffins is $(1.99 + 1) = $2.99.
Therefore, the ordinary price of five packages of muffins is $(2.99 × 5) = $14.95.
Hence, the percentage of profit that I will make when I purchase the package of muffins in the sale is ≈ 50.3 % (Answer)
Well if its fora circle it would be r ( radios, Half of the Diameter) divided by 9
8.1x - 4.5y = 5.4.....subtract 8.1x from both sides
-4.5y = -8.1x + 5.4...divide both sides by -4.5
y = (- 8.1/-4.5)x + 5.4 / -4.5...simplify
y = 1.8x - 1.2 <==