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3 years ago

15

In a class, there are 18 girls and 14 boys. If the teacher selects two students at random to attend a party with the principal,

what is the probability that the two students are the same sex?

1 answer:

Alexandra [31]3 years ago

4 0

Answer:

0.492 is the answer

Step-by-step explanation:

You might be interested in

I need help please!!

mina [271]

Step-by-step explanation:

11

$\frac{ - 1}{5} \times \frac{4}{7}$

$\: \: \: \: \: \frac{ - 4}{35}$

12

$\frac{ - 1}{2} \times \frac{4}{5}$

$\frac{ - 2}{5}$

13

$\frac{ - 3}{2} \times \frac{7}{ - 10}$

$\frac{21}{20}$

14

$\frac{1}{2} \times \frac{7}{8}$

$\frac{7}{16}$

15

$\frac{ - 9}{5} \times \frac{1}{2}$

$\frac{ - 9}{10}$

16

$\frac{ - 32}{9} \times \frac{1}{3}$

$\frac{ - 32}{27}$

17

$\frac{ - 2}{1} \div \frac{ - 19}{5}$

$\: \: \: \: \: \: \frac{ - 2}{1} \times \frac{5}{ - 19}$

$\: \: \: \: \frac{ - 10}{19}$

18

$\frac{1}{9} \div \frac{ - 4}{3}$

$\frac{1}{9} \times \frac{3}{ - 4}$

$\frac{ - 1}{12}$

19

$\frac{13}{7} \div \frac{23}{4}$

$\frac{13}{7} \times \frac{4}{23}$

$\frac{52}{161}$

20

$\frac{ - 37}{10} \div \frac{9}{4}$

$\frac{ - 37}{10} \times \frac{4}{9}$

$\frac{ - 74}{45}$

5 0

3 years ago

Read 2 more answers

The radius of a circle is 4 feet. What is the area of a sector bounded by a 45° arc?

DIA [1.3K]

Answer:

$Area = 6.28\ ft^2$ or $Area = 2 \pi\ ft^2$

Step-by-step explanation:

Given

$Radius, r = 4ft$

$Angle, \theta = 45$

Required

Calculate the area of the sector

When angle is given in degrees, the area of sector is calculated as thus;

$Area = \frac{\theta}{360} * \pi * r^2$

$Substitute\ r = 4\ and\ \theta = 45$

$Area = \frac{\theta}{360} * \pi * r^2$ becomes

$Area = \frac{45}{360} * \pi * 4^2$

$Area = \frac{45}{360} * \pi * 16$

$Area = \frac{45*16}{360} * \pi$

$Area = \frac{720}{360} * \pi$

$Area = 2 * \pi$

$Area = 2 \pi\ ft^2$

The above is the area in terms of π

Solving further.... (Take π as 3.14)

$Area = 2 \pi\ ft^2$ becomes

$Area = 2 * 3.14\ ft^2$

$Area = 6.28\ ft^2$

Hence, the area of the sector is

$Area = 6.28\ ft^2$ or $Area = 2 \pi\ ft^2$

8 0

3 years ago

Someone plz help but instead of sending a link because I can’t open then can you please just tell me, thanks!

Neporo4naja [7]

Answer:

Options A and C and F are correct.

Step-by-step explanation:

5(2+4)

5*2+5*4

5*6

Have a great day! :)

and can I please have brainliest?

Thanks!

5 0

3 years ago

Read 2 more answers

Two trucks started toward each other at the same time from towns 500 km apart. One truck traveled at a rate of 65 km per hour wh

ale4655 [162]

They met after (4 hours).
(60+65)*x=500<span />

5 0

3 years ago

The heights of two similar cylinders are 3cm and 4cm respectively. The total area of the bigger cylinder is 400cm².Calculate the

shusha [124]

Answer:

Step-by-step explanation:

Total surface area = 2πr(r+h)

If the total area of the bigger cylinder is 400cm² and radius is 4cm, then;

400=2(3.14)(r)(r+4)

400= 6.26r(r+4)

400=100.48 + 25.12h

299.52 = 25.12h

H = 299.52/25.12

H = 11.92cm

For the smaller cylinder

The height is calculated as;

H/h = R/r

11/92/

8 0

3 years ago