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AnnyKZ [126]
3 years ago
10

In the past 6 6 days, Adrion's travel time to school has varied: 22 22 minutes, 27 27 minutes, 34 34 minutes, 29 29 minutes, 20

20 minutes, and 18 18 minutes. The work shown is her calculation of the mean absolute deviation of the time traveled. Which step contains the first error Adrion made?
Mathematics
2 answers:
Lera25 [3.4K]3 years ago
5 0

Answer:

Step 4

Step-by-step explanation:

aleksklad [387]3 years ago
3 0

Answer:

6

,

22

,

27

,

34

,

29

,

20

,

18

 has more than one absolute value, which means that it can't be written as piecewise.

Step-by-step explanation:

6

,

22

,

27

,

34

,

29

,

20

,

18

 can't be written as piecewise.

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Simplify <br><br> (1/2)^2 -6(2-2/3)
Kruka [31]

Answer:

= −31/4

(Decimal: -7.75)

Step-by-step explanation:

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3 years ago
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What is (0,-2) a solution of 2x-4y=-8
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Answer:

Step-by-step explanation:

4 0
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Experiments on learning in animals sometimes measure how long it takes a mouse to find its way through a maze. The mean time is
Sladkaya [172]

Answer:

Option A.

Step-by-step explanation:

In an experiment a mouse took the mean time to find its way through a maze = 18 seconds.

So the mean time μ = 18

So null hypothesis says,

H₀ : μ = 18

Then a researcher thought that the mice can complete the maze faster than the time taken earlier.

So he thinks mean time taken by 10 mice will be less than 18 seconds.

Or μ < 18

Alternate hypothesis says will be

Hₐ : μ < 18

Therefore, null hypothesis and alternate hypothesis will be

H₀ : μ = 18

Hₐ : μ < 18

Option A. will be the answer.

4 0
3 years ago
Find the slope between the<br> following points:<br> (-1,19) and (11,16)
patriot [66]

Answer:

Slope =-1/4

Step-by-step explanation:

y=mx+n

Slope=m=(y2-y1)/(x2-x1)

A(-1,19).... x1 =-1, y1=19

B(11,16)..... x2=11, y2=16

Slope=(16-19)/(11-(-1))=(-3)/(11+1)=-3/12=-1/4

4 0
3 years ago
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A baseball is thrown in a parabolic arc. It's position above the ground at a given point in time can be represented by the quadr
SCORPION-xisa [38]

Answer:

The baseball reached 9 feet high above the ground

Step-by-step explanation:

The given quadratic function representing the position of the baseball above ground is p(t) = 1/2·g·t² + v₀·t + p₀

Where;

t ≥ 0

g = -32 ft./sec²

v₀ = The initial velocity

p₀ = The initial position

Given that when the ball is thrown, we have;

The initial, straight up, velocity, v₀ = 16 ft./sec

The initial position, p₀ = 5 ft.

Substituting the above values in the quadratic function representing the position of the baseball above ground, we have;

p(t) = 1/2·(-32)·t² + 16·t + 5 = 16·t - 16·t² + 5

At the maximum point, the rate of change of the height with time = 0, therefore;

dp(t)/dt = 0 = d(16·t - 16·t² + 5)/dt = 16 - 32·t

16 - 32·t = 0

16 = 32·t

t = 16/32 = 0.5 seconds

Therefore, the time takes to reach the maximum height = 0.5 seconds

The height (maximum) reached in 0.5 seconds is given as follows;

h(t) = 16·t - 16·t² + 5, from which we have;

h(0.5) = 16 × 0.5 - 16 × (0.5)² + 5 = 9

Therefore, the height baseball reached = 9 ft. above ground

7 0
3 years ago
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