All categories

3 years ago

(Each surfboard is $240) The sales tax on a surfboard is $12. What is the percent of sales tax?

Mathematics

1 answer:

Brums [2.3K]3 years ago

7 0

5% if you set up a proportion, it helps you out more.

You might be interested in

grandpa joe wants to open an account for his grandchildren that he hopes will have $80,000 in it after 20 years. how much must h

kirill [66]

Answer:

$46185.04

Step-by-step explanation:

80000 = X(1 + 0.0275/12)^(20×12)

X = 46185.03749

3 0

3 years ago

Best and correct answer gets brainliest!!!

dmitriy555 [2]

59 degrees!
because you set up your problem: 3c+2+2c-7=90
then combine all like terms: 5c-5=90
Add 5 to both sides: 5c=95
then divide both sides by 5: c=19
Plug in your answer: 3(19)+2=59

8 0

3 years ago

Weight of a rock: In a geology course, students are learning to use a balance scale to accurately weigh rocks. One student plans

statuscvo [17]

Answer:

The student who weighted the rock 5 times has a 95% confidence interval of (25.2, 29.1) which is guaranteed to be more wider (less precise) than the other student who weighted the rock 20 times.

Step-by-step explanation:

What is Confidence Interval?

The confidence interval represents an interval that we can guarantee that the target variable will be within this interval for a given confidence level.

The confidence interval is given by

$CI = \bar{x} + t_{\alpha/2}(\frac{\sigma}{\sqrt{n} } ) \\$

Where $\bar{x}$ is the mean weight $\sigma$ is the standard deviation $t_{\alpha/2}$ is the critical value from t-table and n is the sample size.

The term $t_{\alpha/2}(\frac{\sigma}{\sqrt{n} } )$ is known as margin of error.

As the sample size is decreased the corresponding margin of error increases which results in wider confidence interval which means smaller precision.

The student who weighted the rock 5 times has a 95% confidence interval of (25.2, 29.1) which is guaranteed to be more wider (less precise) than the other student who weighted the rock 20 times.

We can say with 95% confidence that the true mean weight of the rock is within the interval of (25.2, 29.1).

7 0

3 years ago

in 2001, the population in a town was 12% more than it was in 2000. if the population was 25,160 in 2002, which is 10% more than

blagie [28]

2002=25,160
2001=22,644
2000=19,926.72 (need to round to 19,926)
2001:
25,160/10=2516
25,160-2516

2000:
22,644/10=2,264.4 (10%)
2,264.4/5=452.88 (2%)
2,264.4+452.88=2717.28 (12%)
22,644-2717.28=19.926.72

3 0

3 years ago

PLEASE HELPP Divide 24 ÷ -3 drag and drop the correct number into the box to complete the sentence

nikklg [1K]

Option A: -8 is the right answer

Step-by-step explanation:

In order to find the quotient of a divided by b is solved as:

$a/ b = a * \frac{1}{b}$

the answer is the quotient

Given

24 ÷ -3

It will be simplified as:

$24 * \frac{1}{-3} = -8$

The quotient is -8

Hence,

Option A: -8 is the right answer

Keywords: Quotient, remainder

Learn more about division at:

#LearnwithBrainly

3 0

4 years ago