F(x) = x² + x - 20 = x² + 5x - 4x - 20 = x(x + 5) - 4(x + 5) = (x + 5)(x - 4)
f(x) = 0 ⇔ (x + 5)(x - 4) = 0 ⇔ x + 5 = 0 or x - 4 = 0 ⇒ x = -5 or x = 4
Answer: C. x = -5 and x = 4.
Answer:
y=-1/3x-3
Step-by-step explanation:
Answer:
It's D = 20 units
here is the pic :)
Step-by-step explanation:
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Answer:
98 degrees
Step-by-step explanation:
the full degree of a triangle is 180 degrees
52 + 30 = 82
180 - 82 = 98
Answer:
Step-by-step explanation:
3. V triangular prism =B*h=18*12*35=7560 cubic feet
4. V cone= pi*r^2*h=pi*8^2*9=3.14*64*9=1808.6 cubic feet
5. V=B*h/3=15*9*13/3=5*9*13=585 cubic milimeters
