X^2 - 10x + 36 = 0;
We use the quadratic formula: x = ( - b + or - i
)/ (2a);
We have a = 1; b = -10; c = 36;
Then, x = ( 10 + or -i
)/2 = 5 + or -
)/2 ;
Perimeter = Side + Side + Side
Side 1 = x
Side 2 = x + 7
Side 3 = 2x-7
Plug into the equation:
84 = x + (x + 7) + (2x-7)
84 = x + x + 7 + 2x - 7
Combine like terms:
84 = 4x
Divide by 4 and solve for x:
21 = x
Side 1 = 21
Side 2 = 28
21+7=28
Side 3 = 35
21(2) - 7 = 42 - 7 = 35
B is 90-42=48° since complementary angles add to 90°
Answer:
Each car is 4.5 inches, but I'm not sure what your question is.
Step-by-step explanation:
Answer:
Didn't post the picture
Step-by-step explanation:
