Ask question

Ask question

All categories

3 years ago

7

the mean age of w student book club is 14.2 years. a 27-year-old teacher is invited to join the club. how does the teachers age

affect the new mean?

1 answer:

Masteriza [31]3 years ago

3 0

The answer is B. the new mean age will be greater than 14.2 because 27 is bigger than the mean age.

You might be interested in

Lucas is selling ribbons to raise money for the Juvenile Diabetes Research Foundation. His expenses include $23 for materials, p

Tanzania [10]

Using the equation, the amount of ribbon she needs to sell to break even is 50 ribbons.

<h3>How to represent system of equation and solve?</h3>

x = number of ribbons

y = expenses or revenue

Therefore, the system of equation for this situation is as follows;

y(expenses) = 23 + 0.04x

y = 23 + 0.04x

He charges $0.50 per ribbon. Therefore,

y(revenue) = 0.50x

y = 0.50x

Therefore, for her to break even,

23 + 0.04x = 0.50x

23 = 0.46x

x = 23 / 0.46

x = 50

Therefore, she needs to sell 50 ribbons for her to break even.

learn more equation here: brainly.com/question/20910741

#SPJ1

8 0

1 year ago

The number of fish in a lake decreased by 20% between last year and this year. Last year there were 75 fish in the lake. What is

7nadin3 [17]

Answer:

90

Step-by-step explanation:

75 × (20/100) = 15

75+15=90

7 0

3 years ago

Micaela works in a department store selling clothing. She makes a guaranteed salary

marusya05 [52]

Answer:

the answer is 565

Step-by-step explanation:

20% of her 1075 is 215

so 215+ 230= 565

7 0

2 years ago

2. Use the conversion table to convert the following metric units into the given English units.

ruslelena [56]

Answer:

<h2>I need only 5 brainlisted please give me</h2>

Step-by-step explanation:

<h3>please anyone please I request you all</h3>

5 0

2 years ago

5r^2-13r-6=0 <br><br> How do I solve this

frosja888 [35]

$5 {r}^{2} - 13r - 6 = 0 \\ a = 5 \\ b = - 13 \\ c = - 16 \\$

<em>r</em><em>=</em><em> </em><em><u>-</u></em><em><u>(</u></em><em><u>-</u></em><em><u>1</u></em><em><u>3</u></em><em><u>)</u></em><em><u>±</u></em><em><u>></u></em>

<em><u> $\sqrt{( - 13) {}^{2} } - 4.5( - 6)$ </u></em>

<u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>2</em><em>.</em><em>5</em>

<em>r</em><em>=</em><em> </em><em><u>1</u></em><em><u>3</u></em><em><u>±</u></em><em><u>1</u></em><em><u>7</u></em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>1</em><em>0</em>

<em>r</em><em>=</em><em><u>1</u></em><em><u>3</u></em><em><u>+</u></em><em><u>1</u></em><em><u>7</u></em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em>1</em><em>0</em>

<em>r</em><em>=</em><em><u>1</u></em><em><u>3</u></em><em><u>-</u></em><em><u>1</u></em><em><u>7</u></em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em>1</em><em>0</em>

<em> $r = 2 \\ r = \frac{ - 2}{5}$ </em>

<em> $this \: the \: answer \: your \: question \\ \\ mark \: me \: as \: a \: brainlist \: plz$ </em>

7 0

2 years ago

Read 2 more answers