Heya!!!
Answer to your question:
2x-y=0 ----(i)
3x-2y=-3 -----(ii)
multiply (i) by 2
4x-2y=0 -------(iii)
Subtracting (ii) from (iii)
4x-2y-3x+2y=0-(-3)
x=3
put value of x in (i)
2 (3)-y=0
y=6
x=3,y=6
Hope it helps *_*
Answer:
The outering is 11 cm so let's see what the Area is. We use the formula Area of a circle:
A = πr² = πd2/4
If:
Radius, r = 11 cm
Then:
Diameter, d = 22 cm
Circumference, C = 69.115038378975 cm
Area, A = 380.13271108436 cm²
now all we need to do is subtracts the inner circle Area.
If:
Radius, r = 9 cm
Then:
Diameter, d = 18 cm
Circumference, C = 56.548667764616 cm
Area, A = 254.46900494077 cm²
Thus: 380.13271108436 cm² - 254.46900494077 cm² =
125.6637061436 cm²
Step-by-step explanation:
Answer:
74
Step-by-step explanation:
What I'm getting at, is that you need to add all the hour sold cups up, and then double it because she expects to sell twice as much. 15 + 11 +5 +6 = 37, and 37 doubled is 74
Answer: w is equal to the sum of angles x and y. (W=x+y)
Step-by-step explanation:
The exterior angle of a triangle (in this case w) is equal to the sum of the two remote interior angles of the triangle (in this case angles x and y)
40x + 120= 400
40x= 280
X=7
It took 7 hours to repair.