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Natasha2012 [34]
2 years ago
14

Solve the system using substitution. Ex-= 3x+2y = 23 1/2X-4= y

Mathematics
1 answer:
adoni [48]2 years ago
3 0

Answer:

-1 1/2

Step-by-step explanation:

x = 5

y = 4

y2 = -1 1/2

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A study dealing with health care issues plans to take a sample survey of 1500 Americans to estimate the mean dollar amount that
frutty [35]

Answer:

The population parameter of this study is the population mean.

Step-by-step explanation:

A population parameter is a numerical measure representing a certain characteristic of the population. For example, population mean, population variance, population proportion, and so on.

The population parameter is computed using all the values of the population.

The population parameter can be estimated using the sample statistic. If the value of the population parameter is not known, then a random sample of large size, say <em>n</em> ≥ 30 can be selected from the population and the statistic value can be computed. This statistic value is considered as the point estimate of the parameter. It is also known as the unbiased estimator of the parameter.

In this case the survey involved sampling of 1500 Americans to estimate the mean dollar amount that Americans spent on health care in the past year.

The sample selected is used to compute the sample mean dollar amount that Americans spent on health care.

So, the population parameter of this study is the population mean.

7 0
2 years ago
What is the name of this type of graph?
Lostsunrise [7]
This depends on the equation.
8 0
3 years ago
What is Associative propert
DENIUS [597]

Answer:

Associative property of multiplication is the grouping of numbers being multiplied can be changed without affecting the product.

here is an example!

Addison Rae work using the associative property:

(-8.5)(5)(-4) =

(-8.5)(-20) =

170

hope this helped it was from my FLVS schooling :)

8 0
3 years ago
Express the square root of -80 in its simplest terms.
spin [16.1K]

Answer:

C

Step-by-step explanation:

noting that \sqrt{-1} = i

Given

\sqrt{-80}

= \sqrt{16(-1)(5)}

= \sqrt{16} × \sqrt{-1} × \sqrt{5}

= 4i\sqrt{5} → C

4 0
3 years ago
Solve for x<br>.............​
Inessa [10]

Answer:

Step-by-step explanation:

7388

8 0
3 years ago
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