In parallelogram abcd, ae and cf are perpendicular to diagonal bd, and ef = 10 cm. if bd = 28 cm, then how long are de and bf? (diagram is not drawn to scale.)

Its false.

Step-by-step explanation:

i believe that the slope of the line is -5

step-by-step explanation:

"standard form:

3x2 + 14x − 10 = 0

solutions based on quadratic formula:

x1   = −14 − √ 142 − 4×3×(−10) /   2×3   = −14 − 2 × √ 79 /   6   ≈ −5.296

x2   = −14 + √ 142 − 4×3×(−10) /   2×3   = −14 + 2 × √ 79 /   6   ≈ 0.629