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mr Goodwill [35]
3 years ago
10

X-3=2x-3-x Please solve with answer and how you got the answer

Mathematics
1 answer:
Fofino [41]3 years ago
3 0

Answer:

3x-3

Step-by-step explanation:

You have to combine like terms. <em>x</em> and 2<em>x</em> have the same variable, so this equals 3x, and then you subtract 3 so:

x-3=2x-3-x

    =3x-3

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Which economic indicator measures inflation<br>A) GDPB) CPI <br>C) unemployment rate
Anastaziya [24]
The answer is A) GDP

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3 years ago
There are 20 nickels in a dollar
Natasha_Volkova [10]

answer: n = 20

Step-by-step explanation:To write an equation, define variables. n will be the number of nickels. d will be the number of dollars. We want to know the number of nickels so the equation will be equal to n. Since there are 20 nickels in each dollar, 1 dollar will have 20 nickels. 2 dollars will have 40 nickels or 2*20. For d dollars, it will be 20d.n = 20d

3 0
3 years ago
There are 5 girls to every 6 boys enrolled in West Prep Middle School. If
Elena-2011 [213]

Answer:

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5 0
3 years ago
A sample of size =n72 is drawn from a population whose standard deviation is =σ25. Part 1 of 2 (a) Find the margin of error for
kherson [118]

Answer:

a) margin of error ME = 5.77

b) Margin of error becomes smaller

Step-by-step explanation:

Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.

The confidence interval of a statistical data can be written as.

x+/-zr/√n

x+/-ME

Where margin of error ME = zr/√n

a)

Given that;

Mean = x

Standard deviation r = 25

Number of samples n = 72

Confidence interval = 95%

z(at 95% confidence) = 1.96

Substituting the values we have;

ME = 1.96(25/√72)

ME = 1.96(2.946278254943)

ME = 5.774705379690

ME = 5.77

b)

For n = 89

ME = 1.96(25/√89)

ME = 1.96(2.649994700015)

ME = 5.193989612031

ME = 5.19

5.19 is smaller than 5.77 in a) above. So,

Margin of error becomes smaller

6 0
3 years ago
Hi guys mind helping me with this
Anton [14]

Answer:

i actually have the same question  

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
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