Answer:
500 grams is 20 percent of 2.5 kg
Step-by-step explanation:
500*100 = 50,000
50,000/2500=20
Answer:
y = 120x + 3
Step-by-step explanation:
1. Write out basic structure of formula
y = mx + b
y = oz. of water after x hours
m = rate of change
x = number of hours,
b = oz. of water you started with
2. Plug in what you already know
The problem states that the bucket already has 3 oz. of water, so
y = mx + 3
3. Solve for m
2 oz. of water are added to the bucket after 1 minute, making a ratio of 2:1. Since there are 60 minutes in an hour, multiply both parts of the ratio by 60 to get 120:60. This means that every 60 minutes (1 hour), 120 oz. of water are added to the bucket each hour.
4. Complete the equation
You now know that the rate of change is 120 oz. per hour, and that the bucket originally had 3 oz. of water in it, so you can complete the equation:
y = 120x + 3
<h2>
Center is (7,-3) and radius is 8</h2>
Step-by-step explanation:
Equation of circle with (h,k) as center and radius r is given by,
(x-h)²+(y-k)² = r²
Here we need to find the radius and center of the circle given by the equation (x-7)²+(y+3)²=64
Changing equation to (x-h)²+(y-k)² = r² form
(x-7)²+(y+3)²=64
(x-7)²+(y-(-3))² = 8²
So, h = 7 , k = -3 and r = 8
Center is (7,-3) and radius is 8