At a restaurant the cost for a breakfast taco and a small glass of milk is $2.05. The cost for 3 tacos and 4 small glasses of mi
1 answer:
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Answer:
J. The equation has one real solution and two complex solutions.
Step-by-step explanation:
Complex solutions come in pairs, so there can only be an even number of them. So we can rule out G, H, and K.
To find the other roots, we can factor using either long division or grouping. To use long division, see the attached picture. To use grouping:
3x³ − 4x² + x − 10 = 0
3x³ − 6x² + 2x² + x − 10 = 0
3x² (x − 2) + (2x + 5) (x − 2) = 0
(x − 2) (3x² + 2x + 5) = 0
The other factor is 3x² + 2x + 5. The discriminant of this is (2)² − 4(3)(5) = -56. Since the discriminant is negative, the roots are complex.
Answer:
B
Step-by-step explanation:
given
A = (
+
)h
multiply both sides by 2 to eliminate the fraction
2A = ( +
)h
divide both sides by the multiplier h
=
+
Subtract from both sides
-
=
, that is
=
-