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Advocard [28]
2 years ago
12

Write down in terms of

Mathematics
1 answer:
Nata [24]2 years ago
5 0

Answer:

-5

Step-by-step explanation:

Here,

t2-t1=20-25=-5

t3-t2=15-20=-5

t4-t3=10-15=-5

t5-t4=5-10=-5

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Arrange these fractions in least to greatest order:
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2 years ago
a boy is standing on a pole of height 14.7m throws a stone upwards. it moves in a vertical line slightly away from the pole and
fomenos

Answer:

The time taken for the upward motion is 1 second. The same time is taken for the downward motion

It reaches a maximum height of 4.9 meters.

Step-by-step explanation:

The equation of motion is:

x(t) = -4.9t^{2} + 9.8t

Since the term which multiplies t squared is negative, the graph is concave down, that is, x increases until the vertex, where it reaches it's maximum height, then it decreases.

Vertex of a quadratic equation:

Quadratic equation in the format x(t) = at^{2} + bt + c

The vertex is the point (t_{v}, x(t_{v})), in which

t_{v} = -\frac{b}{2a}

In this question:

x(t) = -4.9t^{2} + 9.8t

So a = -4.9, b = 9.8

Vertex:

t_{v} = -\frac{9.8}{2*(-4.9)} = 1

The time taken for the upward motion is 1 second.

x(t_{v}) = x(1) = 9.8*1 - 4.9*(1)^{2} = 4.9

It reaches a maximum height of 4.9 meters.

Downward motion:

From the vertex to the ground.

The ground is t when x = 0. So

-4.9t^{2} + 9.8t = 0

4.9t^{2} - 9.8t = 0

4.9t(t - 2) = 0

4.9t = 0

t = 0

Or

t - 2 = 0

t = 2

It reaches the ground when t = 2 seconds.

The downward motion started at the vertex, when t = 1.

So the duration of the downward motion is 2 - 1 = 1 second.

5 0
3 years ago
What is the Mean Absolute Deviation of the following numbers?<br> 32, 67,83, 15, 89, 32
hram777 [196]

Answer:

53 I believe

Step-by-step explanation:

add all then divide by how much numbers are there

3 0
3 years ago
Translate the expression<br><br> One less than twice a number
Alja [10]

Answer:

<em><u>2x – 1 = 17</u></em>

Explanation:

Hope it helps you..

Y-your welcome in advance..

(;ŏ﹏ŏ)(ㆁωㆁ)

3 0
2 years ago
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