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rewona [7]
2 years ago
14

A train travels 120 km in 2 hours and 30 miniutes. what is the average speed in km/h ?​

Mathematics
1 answer:
elena-s [515]2 years ago
6 0

Answer:

120/2.5 = 48

48 km/hr

Step-by-step explanation:

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Which expression represents the phrase?"4 more than the product of 8 and n."A) 8n – 4B) 8n + 4C) 4(8 + n)D) (8 + n) – 4
Dafna11 [192]

Answer:

B) 8n+4

Step-by-step explanation:

The product of 8 and n means 8n. Four more means +4. These together equal B) 8n+4

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Y=-4x-41 that passes through (-2,7)
dalvyx [7]

Answer:

Parallel: y=-4x-1

Perpendicular: y=-4x+13/2

Step-by-step explanation:

For the equation y=-4x-41, the slope is -4. Writing a line related to this equation has two options:

  • If the line will be parallel to it then this is the slope of the new line as well. Use the point-slope form to write the equation, then simplify and convert into the slope intercept form.

(y-7)=-4(x--2)


y-7=-4x-8


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  • If the line will be perpendicular to it then the slope is the negative reciprocal of the previous slope. It is 1/4.

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y-7=1/4x-1/2


y=-4x+13/2


4 0
3 years ago
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Identify the recursive formula for the sequence given by the explicit formula An) = 20
UNO [17]

Answer: f(n) = {f(1)=-4

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Or Answer B.

Step-by-step explanation:

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3 years ago
Kite ABCD is rotated 180 degrees clockwise about the origin and then reflected over the y-axis, followed by a reflection over th
sleet_krkn [62]

Answer:

Step-by-step explanation:

Answer:

(-5, 1)

Explanation:

We are given a kite on the graph which is rotated 180° clockwise about the origin and then reflected over the Y axis followed by reflection over the X axis.

We are to find the coordinates of point A after the complete transformation.

A (-5, 1)

When a point is rotated 180° clockwise about the origin, the signs of its coordinates change.

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Then this point A' is reflected over the Y axis where the y coordinate remains the same but x coordinate changes its sign.

A' (5, -1) ---> A'' (-5, -1) - after reflection through y axis

Now this point A'' is reflected over the X axis where the x coordinate remains the same while y coordinates changes its sign.

A'' (-5, -1) ---> A''' (-5, 1) - after complete transformation

7 0
3 years ago
Write two equivalent expressions to represent the area of this rectangle.
Alex777 [14]
5(x-2) or 5x-10 are both correct
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3 years ago
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