This is saying that 5/2=70/x in order to solve you make the equation x=70/(5/2) which would be 140/5 or 28 boys
Answer:
Step-by-step explanation:
343
Answer:
The margin of error for constructing a 95% confidence interval on the population mean income before taxes of all consumer units in the U.S is 1406.32.
Step-by-step explanation:
We are given that according to a survey of 500, the mean income before taxes of consumer units (i.e., households) in the U.S. was $60,533 with a standard error of 717.51.
Margin of error tells us that how much our sample mean value deviates from the true population value.
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<u>Margin of error is calculated using the following formula;</u>
Margin of error =
where, = level of significance = 1 - confidence level
= 1 - 0.95 = 0.05 or 5%
Standard of Error = = 717.51
Now, the value of z at 2.5% level of significance () is given in the z table as 1.96, that means;
Margin of error =
= = 1406.32
Hence, the margin of error for constructing a 95% confidence interval on the population mean income before taxes of all consumer units in the U.S is 1406.32.
The budget categories which comes under variable expenses is:
d) utilities and groceries.
Variable expenses are those that fluctuate. Food costs vary, much like power does. The same goes for costs like entertainment that are more discretionary. One month you might just go to the movies once, but the next you might spend five times as much at a theme park. Some erratic costs, like going to the cinema, are budgeted. Other unforeseen costs include things like auto repairs that folks did not budget for.
Thus, variable expenses include groceries and utilities.
Whereas car payment, student loan, income, rent, mortgage and insurance comes under fixed expenses.
Hence the correct option is d) utilities and groceries.
Learn more about Variable expenses here:
brainly.com/question/5298337
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Answer:
43°
Step-by-step explanation:
The first thing you should do is make the equation. We should know that the sum of all the angles is 180. So it should look like this...
Combine like terms:
Subtract the 137 on both sides:
That's it the value of v is 43°.