All categories

3 years ago

Anson collected 720 seashells. Then he gave 209 seashells to

Mathematics

1 answer:

vaieri [72.5K]3 years ago

3 0

Answer:

18.75%

Step-by-step explanation:

720 - (209+376) =

720 - 585 = 135

135/720 = 0.1875 --> 18.75%

You might be interested in

A man and his three children spent $40 to attend a show. A second family of three children and their two parents spent $53 for t

wariber [46]

The cost for the children tickets is $9

5 0

3 years ago

Complete the following to analyze the graph shown.

Svetradugi [14.3K]

At zero, the value of the function is zero. It then rises to its maximum value, then falls to zero and then to its minimum value and then back to zero.

So, the graph follows the pattern of Sine Function: (B. zero-max-zero-min-zero) starting at the origin. This suggest the coefficient a of the sine function is positive.

Maximum value of the function as seen from the graph is 5, and the minimum value is -5. So the amplitude of the function is 5 and the vertical translation k = 0 as the graph rises equally above and below x-axis.

5 0

4 years ago

Read 2 more answers

Ron co. sold sweatshirts for $20 and baseball caps for $10. A total of 154 sweatshirts and baseball caps were sold for total sal

aliya0001 [1]

He sold 77 sweatshirts that got him 1540 dollars and 77 hats that got him 1320 dollars witch is total of 2,860 dollars and 154 idems

6 0

3 years ago

Read 2 more answers

Let the abbreviation PSLT stand for the percent of the gross family income that goes into paying state and local taxes. Suppose

gavmur [86]

Answer:

Number of families that should be surveyed if one wants to be 90% sure of being able to estimate the true mean PSLT within 0.5 is at least 43.

Step-by-step explanation:

We are given that one wants to estimate the mean PSLT for the population of all families in New York City with gross incomes in the range $35.000 to $40.000.

If sigma equals 2.0, we have to find that how many families should be surveyed if one wants to be 90% sure of being able to estimate the true mean PSLT within 0.5.

Here, we will use the concept of Margin of error as the statement "true mean PSLT within 0.5" represents the margin of error we want.

SO, Margin of error formula is given by;

Margin of error = $Z_(_\frac{\alpha}{2}_ ) \times \frac{\sigma}{\sqrt{n} }$

where, $\alpha$ = significance level = 10%

$\sigma$ = standard deviation = 2.0

n = number of families

Now, in the z table the critical value of x at 5% ( $\frac{0.10}{2} = 0.05$ ) level of significance is 1.645.

SO, Margin of error = $Z_(_\frac{\alpha}{2}_ ) \times \frac{\sigma}{\sqrt{n} }$

0.5 = $1.645 \times \frac{2}{\sqrt{n} }$

$\sqrt{n} =\frac{2\times 1.645 }{0.5}$

$\sqrt{n} =6.58$

n = $6.58^{2}$

= 43.3 ≈ 43

Therefore, number of families that should be surveyed if one wants to be 90% sure of being able to estimate the true mean PSLT within 0.5 is at least 43.

4 0

3 years ago

Please help!!!! I'm being timed I will give Branly

lyudmila [28]

Answer:

11 X 34 then divide that by two which is 187

Step-by-step explanation:

4 0

3 years ago