Answer:
x = 9
y = 9
Step-by-step explanation:
Given :
Let :
Kenyan French roast coffee = x
Cost per x = $8
Sumatran Coffee = y
Cost per y = $10
x + y = 18 - - - - (1)
8x + 10y = 9 * 18 ;
8x + 10y = 162 - - - - (2)
From (1):
x = 18 - y
Put x = 18 - y in (2)
8(18 - y) + 10y = 162
144 - 8y + 10y = 162
2y = 162 - 144
2y = 18
y = 9
x = 18 - y
x = 18 - 9
x = 9
211.8 I just took the test and I had the same question I rounded it to 212 and it said it was wrong so you had to put exactly 211.8
Answer:
A=πr2 is the formula of pi so
it would be A=3.14*100
or 3.14*10^2
3.142 is not pi
and 20 is not 10^2
Step-by-step explanation:
Answer:
50cm^2
Step-by-step explanation:
The diameter of the circle will be 8cm. The radius will be 4cm.
We will use the formula for the are of the circle to find the area. It is:
A=πr²
A=π(4)²
A=π16
A=50.2654...
1 plant would cost you $1.96. cause in one tray has 16 plant you divide that into $8.15 and you'll get $1.96 for one plant.
