E = expresso
m = muffins
2e + 3m = 10.....multiply by -2
4e + 2m = 12
----------------
-4e - 6m = -20 (result of multiplying by -2)
4e + 2m = 12
------------------add
-4m = -8
m = -8/-4
m = 2....so muffins cost $ 2 a piece <===
4e + 2m = 12
4e + 2(2) = 12
4e + 4 = 12
4e = 12 - 4
4e = 8
e = 8/4
e = 2......so expresso's cost $ 2 a piece <===
5. x^2+3x+15+40/x-3
6. x^2+4x+9+22/2x-3
7. yes it is a factor
64 1/8 or 64.125 thats my answer
Answer:
True
Step-by-step explanation:
The formula for the area of a triangle is:
area=(base x height)/2
where A is area
a is side a lets say its 8cm
b is side b lets say its 7 cm
theta is 28
