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1 answer:
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You can determine this by finding zeros of quadratic function,
.
Which eliminates first and third option.
Now we have up and down parabolas left.
If we factor we find that the coefficient before
determines how it is turned, since its positive its an upward turned parabola hence the answer is the last graph.
Hope this helps.
Answer:
a. 360.323 m
b.
Step-by-step explanation:
Distance covered from A to B = speed x time
= 110 x 2.8
= 308 m
Distance covered from B to C = speed x time
= 110 x 1.7
= 187 m
The sum of angles at B = +
=
a. The distance of the plane from it starting point to C can be determined by applying the cosine rule.
=
+
- 2ac Cos B
Sot hat;
=
+
- 2(187 x 308) Cos
But, Cos = 0
So that,
=
+
= 34969 + 94864
= 129833
b =
= 360.323
The distance from A to C is 360.323 m.
b. Applying the sine rule;
=
=
=
Sin A =
= 0.5190
⇒ A = 0.5190
=
The bearing of the plane from its original location = +
=