1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Helga [31]
3 years ago
14

8 55% of students in a school are boys.

Mathematics
1 answer:
ioda3 years ago
5 0

Answer:

Ratio = 11:9

Boys = 440

Girls = 360

Explanation:

Given that, in a school,

Total number of students = 800

Also,

Percent of boys = 55%

Therefore, number of boys = 55% of 800

No. of boys = 55/100 x 800

No. of boys = 55 x 8 =

No. of boys = 440

Therefore, we will get,

No. of girls = (800-440)

No. of girls = 360

Therefore, we will get,

Ratio of boys to girls = 440/360

Ratio = (40*11)/(40x9)

Ratio = 11/9

Hence, the ratio of boys to girls is 11:9 and number of boys and girls is 440 and 360 respectively.

You might be interested in
Calculate the loss on selling 50 shares of stock originally bought at 133/4 and sold at 12. A. $687.50 B. $87.50 C. $600.00 D. $
lianna [129]

Answer:

The loss would be 1062.50

Step-by-step explanation:

To find this, first convert the purchase price into a decimal.

133/4 = 33.25

Now multiply that my the number of shares bought.

33.25 * 50 = 1662.50

This is the amount that was spent. Now to find the sale price, multiply the number of shares by the new price.

50 * 12 = 600

And to find the total loss, subtract the amount of the purchase price from the sale price.

600 - 1662.50 = -1062.50

7 0
3 years ago
Read 2 more answers
A production facility employs 10 workers on the day shift, 8 workers on the swing shift, and 6 workers on the graveyard shift. A
Zigmanuir [339]

Answer:

The probability that all 4 selected workers will be from the day shift is, = 0.0198

The probability that all 4  selected workers will be from the same shift is = 0.0278

The probability that at least two different shifts will be represented among the selected workers is = 0.9722

The probability that at least one of the shifts will be unrepresented in the sample of workers is P(A∪B∪C) = 0.5256

Step-by-step explanation:

Given that:

A production facility employs 10 workers on the day shift, 8 workers on the swing shift, and 6 workers on the graveyard shift. A quality control consultant is to select 4 of these workers for in-depth interviews:

The number of selections result in all 4 workers coming from the day shift is :

(^n _r) = (^{10} _4)

=\dfrac{(10!)}{4!(10-4)!}

= 210

The probability that all 5 selected workers will be from the day shift is,

\begin{array}{c}\\P\left( {{\rm{all \ 4 \  selected   \ workers\  will \  be  \ from  \ the \  day \  shift}}} \right) = \frac{{\left( \begin{array}{l}\\10\\\\4\\\end{array} \right)}}{{\left( \begin{array}{l}\\24\\\\4\\\end{array} \right)}}\\\\ = \frac{{210}}{{10626}}\\\\ = 0.0198\\\end{array}

(b) The probability that all 4 selected workers will be from the same shift is calculated as follows:

P( all 4 selected workers will be) = \dfrac{ (^{10}_4) }{(^{24}_4)}+\dfrac{ (^{8}_4) }{(^{24}_4)} + \dfrac{ (^{6}_4) }{(^{24}_4)}

where;

(^{8}_4) } = \dfrac{8!}{4!(8-4)!} = 70

(^{6}_4) } = \dfrac{6!}{4!(6-4)!} = 15

∴ P( all 4 selected workers is ) =\dfrac{210+70+15}{10626}

The probability that all 4  selected workers will be from the same shift is = 0.0278

(c) What is the probability that at least two different shifts will be represented among the selected workers?

P ( at least two different shifts will be represented among the selected workers)  = 1-\dfrac{ (^{10}_4) }{(^{24}_4)}+\dfrac{ (^{8}_4) }{(^{24}_4)} + \dfrac{ (^{6}_4) }{(^{24}_4)}

=1 - \dfrac{210+70+15}{10626}

= 1 - 0.0278

The probability that at least two different shifts will be represented among the selected workers is = 0.9722

(d)What is the probability that at least one of the shifts will be unrepresented in the sample of workers?

The probability that at least one of the shifts will be unrepresented in the sample of workers is:

P(AUBUC) = \dfrac{(^{6+8}_4)}{(^{24}_4)}+ \dfrac{(^{10+6}_4)}{(^{24}_4)}+ \dfrac{(^{10+8}_4)}{(^{24}_4)}- \dfrac{(^{6}_4)}{(^{24}_4)}-\dfrac{(^{8}_4)}{(^{24}_4)}-\dfrac{(^{10}_4)}{(^{24}_4)}+0

P(AUBUC) = \dfrac{(^{14}_4)}{(^{24}_4)}+ \dfrac{(^{16}_4)}{(^{24}_4)}+ \dfrac{(^{18}_4)}{(^{24}_4)}- \dfrac{(^{6}_4)}{(^{24}_4)}-\dfrac{(^{8}_4)}{(^{24}_4)}-\dfrac{(^{10}_4)}{(^{24}_4)}+0

P(AUBUC) = \dfrac{1001}{10626}+ \dfrac{1820}{10626}+ \dfrac{3060}{10626}-\dfrac{15}{10626}-\dfrac{70}{10626}-\dfrac{210}{10626} +0

The probability that at least one of the shifts will be unrepresented in the sample of workers is P(A∪B∪C) = 0.5256

5 0
3 years ago
What is the square root of 38 to the nearest tenth
Ipatiy [6.2K]
6.16441 which rounds to 6.2 in the tenths place

5 0
3 years ago
What is the sum of (3x-2)(2x-7)​
Doss [256]

Answer:6x-9

Step-by-step explanation: I think so I’m not sure tho

5 0
3 years ago
Read 2 more answers
How many tablespoons are in 1/2 cup
evablogger [386]

Answer:

8

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • You earn $9.20 per hour at your summer job.Write and solve an inequality that represents the number of hours you need to work in
    8·1 answer
  • How do you do 18+2x=-8x+6(7+3x)
    8·1 answer
  • What is 2+2x•13(14-2x)
    15·1 answer
  • Find the difference. Simplify completely. Please show work.<br><br>1. 7/9 - 3/8 <br>2. 5 4/5 - 2 1/4
    6·1 answer
  • What is the angle of rotation of the minute hand of a clock moving from 11:15 to 11:40
    12·2 answers
  • A triangle has a perimeter of 33cm. If the three sides of the triangle are n, 3n−4, and 3n−5, what is the length of each side?
    11·1 answer
  • Write the equation of the line from the graph(serious answers only pls)
    5·1 answer
  • HELP ME PLZZZ ASAP!!!!
    11·1 answer
  • PLS HELP THIS IS DUE
    6·1 answer
  • On a coordinate plane, a line is drawn from point a to point b. point a is at (9, negative 8) and point b is at (negative 6, 7).
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!