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2 years ago

Someone please help!

Mathematics

1 answer:

motikmotik2 years ago

7 0

Answer:

1. 35, 32, 29, 26 are in Arithmetic Sequence having common difference - 3.

5. -7, -9, -11, -13 are in Arithmetic Sequence having common difference - 2.

Step-by-step explanation:

1. 35, 32, 29, 26 are in Arithmetic Sequence having common difference - 3.

2. -1. 6, -36, 216 are not in Arithmetic Sequence.

3. -2, -4, -8, -16 are not in Arithmetic Sequence.

4. -1, 1, 4, 8 are not in Arithmetic Sequence.

5. -7, -9, -11, -13 are in Arithmetic Sequence having common difference - 2.

6. 1, -5, 25, -125 are not in Arithmetic Sequence. (Answer)

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A motorboat covers the distance from one pier to the other pier in 4 hours and the way back in 5 hours. What is the speed of the

aleksklad [387]

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3.5(r + c) = 70
r + c = 20
c = 20 - r

4(r + c) = distance from pier to pier
5(r - c) = distance from pier to pier
4(r + c) = 5(r - c)
4(r + 20 - r) = 5(r - 20 + r)
80 = 10r - 100
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Step-by-step explanation:

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2 years ago

Find the coordinates of the midpoint of a line segment with the given endpoints (14,-8), (12,-1)

Flauer [41]

Answer:

The coordinates of the midpoint of a line segment with the given endpoints (14,-8), (12,-1) are $\mathbf{(13,\frac{-9}{2})}$

Step-by-step explanation:

We need to find the coordinates of the midpoint of a line segment with the given endpoints (14,-8), (12,-1)

The midpoint of line segment can be found using formula:

$Midpoint=(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})$

We have $x_1=14, y_1=-8, x_2=12, y_2=-1$

Putting values and finding midpoint

$Midpoint=(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})\\Midpoint=(\frac{14+12}{2},\frac{-8-1}{2})\\Midpoint=(\frac{26}{2},\frac{-9}{2})\\Midpoint=(13,\frac{-9}{2})$

So, the coordinates of the midpoint of a line segment with the given endpoints (14,-8), (12,-1) are $\mathbf{(13,\frac{-9}{2})}$

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2 years ago