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8_murik_8 [283]
2 years ago
8

DATE

Mathematics
1 answer:
nataly862011 [7]2 years ago
7 0

Answer:

ok this was a good one so here

Step-by-step explanation:

time (seconds)

distance (meters)

speed (meters per second)

4 120 30

25 750 30

9 270 30

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complete the concept map by naming the sampling that you have learned in this module then briefly discuss each
Dmitry [639]

In systematic sampling, individuals are selected at regular intervals from the sampling frame.

<h3>How to explain the sampling?</h3>

Stratified sampling- In this method, the population is first divided into subgroups (or strata) who all share a similar characteristic

<u>Clustered sampling.</u>- a clustered sample, subgroups of the population are used as the sampling unit, rather than individuals. The population is divided into subgroups, known as clusters, which are randomly selected to be included in the study

<u>Simple random sampling. </u>-In this case each individual is chosen entirely by chance and each member of the population has an equal chance, or probability, of being selected.

Quota sampling--This method of sampling is often used by market researchers. Interviewers are given a quota of subjects of a specified type to attempt to recruit.

Learn more about sampling on:

brainly.com/question/17831271

#SPJ1

6 0
2 years ago
Ashley and Kris are saving money for a vacation. Ashley currently has
USPshnik [31]

Answer:

Step-by-step explanation:

1) y = 50x + 2500

2) y = 200x + 1000

if we build a system with the two equations, we have:

50x+2500 = 200x + 1000

150x = 1500

x = 10

y = 2000 + 1000 = 3000

3) 10

4) $3000

8 0
2 years ago
I cant understand this.
djverab [1.8K]
Multiply the top one by 3 for x, so you can eliminate x and find y

then plug in the y into one of the equations to find x
7 0
3 years ago
The Masseys are installing new tiles in their bathroom. Each tile is 1 2 of a foot long, and the bathroom is 6 feet long. How ma
Zielflug [23.3K]

Answer:

12 tiles will fit

Step-by-step explanation:

1/2 foot is 6 inch

6 inch times 12 is 6ft

4 0
2 years ago
What are the real and complex solutions of the polynomial equation? x^3-64=0
Marrrta [24]

Answer:

Step-by-step explanation:

A difference of two perfect cubes,  x^3 - y^3 can be factored into

(x-y) • (x^2 +xy +y^2) =0  equation 1

x ^3 - 64 = 0

(x)^3 - (4)^3 = 0   equation 2

Now substituting equation 2 into equation 1, we get

(x-4) (x^2+(x).(4) +(4)^2) = 0

(x-4) (x^2+4x+16) = 0

so the solutions are

1) x - 4 =0

x=4

x^2 + 4x + 16 = 0

By using the quadratic formula we get the followig solutions:

          - B  ±  √ B2-4AC

 x =   ————————

                     2A

x =(-4-√-48)/2=-2-2i√ 3 = -2.0000-3.4641i

x =(-4+√-48)/2=-2+2i√ 3 = -2.0000+3.4641i

4 0
3 years ago
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