All categories

3 years ago

And can some one help me on this one too thanks :)

Mathematics

1 answer:

tester [92]3 years ago

3 0

Step-by-step explanation:

Hi,

25n represents this equation because, in cents, a quarter is worth 25 cents and n is the number of quarters you have. Not sure how you want to draw that though.

The output when it's ten is 250 cents.

The independent variable is the number of quarters because they affect the total overall cost.

The dependent variable is the total cost because it's what's determined.

I hope this helps :)

You might be interested in

Write 90% as a decimal and fraction in simplest form

solong [7]

90% as a decimal is .9 and then as a fraction in simplest form is 9/10
Hope it helps

5 0

3 years ago

Find the median of the following numbers. 14, 17, 21, 28, 40.

Elis [28]

Answer:21

Step-by-step explanation: The median is the number in the middle sorted from least to greatest, here 21 is the middle number.

4 0

3 years ago

Read 2 more answers

Help with this question please

Maru [420]

Answer:

I don't know so sorry!

5 0

3 years ago

Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 13. Use the empirical rule

Yuri [45]

Answer:

(a) 68% of people has an IQ score between 87 and 113.

(b) 5% of people has an IQ score less than 74 or greater than 126.

Step-by-step explanation:

Given information:Scores of an IQ test have a bell-shaped distribution,

mean = 100

standard deviation = 13

According to the empirical rule

68% data lies between $\overline{x}-\sigma$ and $\overline{x}+\sigma$ .

95% data lies between $\overline{x}-2\sigma$ and $\overline{x}+2\sigma$ .

99.7% data lies between $\overline{x}-3\sigma$ and $\overline{x}+3\sigma$ .

(a)

$\overline{x}-\sigma=100-13=87$

$\overline{x}+\sigma=100+13=113$

$[\overline{x}-\sigma,\overline{x}+\sigma]=[87,113]$

Using empirical rule we can say that 68% of people has an IQ score between 87 and 113.

(b)

$\overline{x}-2\sigma=100-2(13)=74$

$\overline{x}+2\sigma=100+2(13)=126$

$[\overline{x}-2\sigma,\overline{x}+2\sigma]=[74,126]$

Using empirical rule we can say that 95% of people has an IQ score between 74 and 126.

The percentage of people has an IQ score less than 74 or greater than 126 is

P = 1- percent of people has an IQ score between 74 and 126.

P = 1- 95%

P = 5%

Therefore 5% of people has an IQ score less than 74 or greater than 126.

(c)

$\overline{x}-3\sigma=100-3(13)=61$

$\overline{x}+3\sigma=100+3(13)=139$

$[\overline{x}-3\sigma,\overline{x}+3\sigma]=[61,139]$

Using empirical rule we can say that 99.7% of people has an IQ score between 61 and 139.

The percentage of people has an IQ score less than 61 or greater than 139 is

P = 1- percent of people has an IQ score between 61 and 139.

P = 1- 99.7%

P = 0.3%

The percentage of people has an IQ score greater than 139 is

$P=\frac{1}{2}(0.3\%)=0.15\%$

Therefore 0.15% of people has an IQ score greater than 139.

5 0

4 years ago

Two classes are planning to go on a field trip together. One clas with 18 students is being joined by 6 boys and 11 girls from a

Serjik [45]

Answer: The boys made up 6b of the original class.

Step-by-step explanation:

7 0

3 years ago