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GrogVix [38]
3 years ago
10

How do you solve this multi-step equation? -4x-7-3x+4=25

Mathematics
1 answer:
kirill115 [55]3 years ago
5 0

Answer:

x= -4

Step-by-step explanation:

Combine alike terms:

-7x-3=25

Add a 3 to both sides:

-7x=28

Divide by -7 on both sides:

x= -4

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Brian invests £7900 into his bank account.
DENIUS [597]

Step-by-step explanation:

1. use the equation

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7 0
2 years ago
Name the sampling method used in each of the following situations:
elixir [45]

Answer:

a) Convenient

b) Cluster

c) Stratified

d) Systematic

e) Random

Step-by-step explanation:

Samples may be classified as:

Convenient: Sample drawn from a conveniently available pool.

Random: Basically, put all the options into a hat and drawn some of them.

Systematic: Every kth element is taken. For example, you want to survey something on the street, you interview every 5th person, for example.

Cluster: Divides population into groups, called clusters, and each element in the cluster is surveyed.

Stratified: Also divides the population into groups. However, then only some elements of the group are surveyed.

Situation a:

Asks all from a single group(sitting passengers), that is, convenint sample.

Situation b:

First she separates the students by row, then from each row, she chooses all students. So this is Cluster sampling.

Situation c:

The manager separates the stores by location, and then in each location, random customers are chosen. This is an example of Stratified sampling.

Situation d:

Marks for every fourth patron, that is, every 4th element. So Systematic sampling.

Situation e:

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6 0
3 years ago
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1 year ago
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pav-90 [236]

Answer:

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Step-by-step explanation:

6(2x-1)/5 => (12x - 6)/5 because of the distributive property.

You cannot simplify farther after you reach (12x - 6)/5.

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3 years ago
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ddd [48]

Answer:

Step-by-step explanation:

volume=area of side triangle×distsnce between triangles

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5 0
2 years ago
Read 2 more answers
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