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3 years ago

Sales tax on a guitar that costs $140 is $7 dollars what is the percent of sales tax? 140 = p% x 7

Mathematics

1 answer:

svlad2 [7]3 years ago

5 0

Answer:

Step-by-step explanation:

Solve for p by simplifying both sides of the equation, then isolating the variable

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T+8/10=9/10 solve equation

Reika [66]

For this question you can add -8/10 on both sides so you gonna have :
T = 9/10 - 8/10 = 1/10 so the answer is T = 0.1 :))
i hope this is helpful
have a nice day

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4 years ago

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Legalize Marijuana, Part II. As discussed in Exercise 6.12, the 2010 General Social Survey reported a sample where about 48% of

kvv77 [185]

Answer:

Around 2397 Americans must be surveyed to get a margin of error of 2%.

Step-by-step explanation:

We are given the following in the question:

Proportion of US residents who thinks marijuana should be made legal = 48%

$\hat{p} = 0.48$

We have to construct a 95% confidence interval.

Margin of error = 2% = 0.02

Formula for margin of error =

$z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

Putting values, we get,

$0.02 = 1.96\times \sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}\\\\0.02 = 1.96\times \sqrt{\dfrac{0.48(1-0.48)}{n}}\\\\\sqrt{n} = 1.96\times \dfrac{\sqrt{0.48(1-0.48)}}{0.02}\\\\\sqrt{n}=48.96\\n = 2397.0816\approx 2397$

Thus, around 2397 Americans must be surveyed to get a margin of error of 2%.

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3 years ago

Square root of 8 savvas realize

solong [7]

Answer:

square root of 8 is approximately 2.828

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3 years ago

What does the number 160 represent in the rational function that models the situation?

ludmilkaskok [199]

Answer:

Step-by-step explanation:

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4 years ago

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PLEASE ANSWER THiS MATH QUESTION !! 20 POINTS AND BRAINLIEST !!

RoseWind [281]

Answer:

Step-by-step explanation:

Plug in the values of each of the coordinate pairs into the linear system.

2x - 8y = 0, -3x - 8y = 20

2*-4 - 8*-1 = 0

- 8 - (-8) = 0 -> CORRECT!

-3x - 8y = 20

-3*-4 - 8*-1 = 20

12 - (-8) = 20 -> CORRECT!

You don't need to try any other pairs, you already know that this is the solution to the problem! Remember, in the future, just plug all the coordinate pairs into the equation. Whichever one makes the equation true is the correct solution! Hope this helps!

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3 years ago

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Sales tax on a guitar that costs $140 is $7 dollars what is the percent of sales tax￼? 140 = p% x 7

Sales tax on a guitar that costs $140 is $7 dollars what is the percent of sales tax? 140 = p% x 7