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alisha [4.7K]
3 years ago
12

A police car drives 108km in 1 1/2 hours what is its average speed in kilometers per hour.

Mathematics
1 answer:
zhuklara [117]3 years ago
7 0

ANSWER

72km/h

EXPLANATION

The average speed of the car can be calculated using the formula:

Average Speed=total distance/ total time taken.

The car covers a distance of 108km in 1½ hours.

We substitute the values into the formula to obtain,

Average  \:  \: Speed= \frac{108}{1.5}

Average  \:  \: Speed=72 {kmh}^{ - 1}

Therefore the average speed of the journey is 72km/h

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If the vertex of a parabola is (0, 3), what is the axis of symmetry
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Answer:

The equation of the axis of symmetry for this parabola is x = 0.

Step-by-step explanation:

For parabola's, it's axis of symmetry always goes through the vertex of the parabola. In other words, the axis of symmetry is vertical line that goes through the x-coordinate of the vertex.

Now, the vertex is given as (0,3) which is at x = 0, y = 3.

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A communications tower is supported by two wires, connected at the same point on the ground. One is attached to the tower at D a
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10.99 m

Step-by-step explanation:

✍️What we are basically asked to solve here is to find the distance between C and D.

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✍️Finding BC using trigonometric ratio formula:

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✍️Finding BD using trigonometric ratio formula:

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Thus:

tan(\theta) = \frac{opposite}{adjacent}

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Multiply both sides by 42

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

The distance between two points can be calculated with the formula

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