the answer is 0 because u will need to multiply ur answer to 0 at the end and everything × 0=0 :)
X^2 + y^2 = 25
2x + y = -5.....y = -2x - 5
x^2 + (-2x - 5)^2 = 25
x^2 + (-2x - 5)(-2x - 5) = 25
x^2 + (4x^2 + 20x + 25) = 25
5x^2 + 20x + 25 = 25
5x^2 + 20x = 0
5x(x + 4) = 0
5x = 0 2(0) + y = -5
x = 0 y = -5
x + 4 = 0 2(-4) + y = -5
x = -4 -8 + y = -5
y = 3
solutions are : x = 0, y = -5.....and x = -4, y = 3
Answer:
-74/15
Step-by-step explanation:
Step one: 14/9/ -2/3=
14/9 x -3/2= -7/3
Step 2: -7/3-13/5
Find common denominator:
-35/15 - 39/15= -74/15
Note that the given cos(57°)cos(94°)-sin(57°)sin(94°) resembles the formula
cos a cos b - sin a sin b, which is cos (a+b).
Therefore, cos(57°)cos(94°)-sin(57°)sin(94° = cos (57+94) = cos 151.
Well, 10 percent of 2.50 would be 0.25. If you add 0.25, to the original cost it equals 2.75. Bella would have spent 2.50 originally.