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Harrizon [31]
2 years ago
8

What is the mean of the following data set?

Mathematics
1 answer:
worty [1.4K]2 years ago
6 0

Answer:

B

Step-by-step explanation:

After adding them all together, we end up with 351. There are 12 numbers, so we do 351/12, getting 29.25.

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A researcher wants to survey people from different age groups to analyze voting patterns. Which type of survey will best accompl
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Answer: Stratified sampling


Step-by-step explanation:

Stratified sampling is a random sampling method in which the population is divided into non-coinciding groups are called strata and a sample is picked out by some design within each stratum.

Given: A researcher wants to survey people from different age groups to analyze voting patterns.

Thus he will make different groups according to different ages to analyze voting patterns that are called stratum.

Thus, Stratified sampling best accomplish this goal.


6 0
3 years ago
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Which two line segments are congruent
agasfer [191]

Answer:

AB and EF

Step-by-step explanation:

They are the same length

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If the initial velocity stays the same, but the height the projectile is launched from changes , how would the amount of time ch
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Answer:

Part A

The height to which the projectile reaches is given by the following formula;

\Delta y = y-y_0 = v_{0y} \times t-\dfrac{1}{2} \times g \times t^2

Where;

v_{0y} = The initial velocity of the projectile = Stays the same

y = The height the projectile reaches

y₀ = The height from which the projectile is launched

g = The acceleration due to gravity

t = The time taken

Given that the projectile has the same initial velocity, the variation of Δy with time, 't', will be the same when the project is launched from a different height, and the time change that it takes for the projectile to reach the maximum height will be the same for the previous launch height

Part B

From the change in eight of the projectile, Δy = y - y₀, the maximum height reached, 'y', is therefore given as follows;

y = Δy + y₀

The maximum height will increase by 'y₀', where 'y₀' is the difference between new height and the previous height, y_i

That is, if y₀ > y_i, the maximum height reached increases and if y₀ < y_i, y₀ will be added as y = Δy - y₀ and the maximum height reached decreases

Step-by-step explanation:

6 0
2 years ago
Solve for x.<br><br> 4^2x = 5^2x-1
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Answer:

X= 1/9

Step-by-step explanation:

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3 years ago
Geometry: Can someone explain this one. Only if you know the answer please. Thanks. (It's not AAA) ​
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Answer:

ASA

Step-by-step explanation:

8 0
3 years ago
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