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
Ira Lisetskai [31]
4 years ago
6

In a class of 30 students, everyone has either a pierced nose or a pierced ear. The professor asks everyone with a pierced nose

to raise his or her hand. Nine hands go up. Then the professor asked everyone with a pierced ear to do likewise. This time there are 25 hands raised. How many students have piercings both on their ears and their noses?
Mathematics
1 answer:
spin [16.1K]4 years ago
7 0
There are 4 students who have piercings both on their ear and their noses.
You might be interested in
You put $3000 in a CD (certificate of deposit) at the promotional rate of 5.6% simple interest. How long will it take to earn $3
PolarNik [594]
First take 5.6 percent of 3000. Which is 5.6/100×3000= 168.
336 divided by 168 is 2.

The final answer is 2 years
6 0
4 years ago
Wich is longer 5 miles or 10 km
charle [14.2K]
10 kilometers because 10 kilometers = 6.21371192 miles or
6.21 the formula to convert miles to kilometers5 mi*63360 in 1 mi*2.54 cm 1 in*1 km 100000…
3 0
3 years ago
Read 2 more answers
Need help now please<br> Which model accurately represents the chemical equation 2H2 + O2è 2H2O?
maw [93]

Answer:

B

Step-by-step explanation:

-The balanced chemical reaction of oxygen and water is written as:

2H_2_{(g)}+O_2_{(g)}->2H_2O_{(l)}

-You notice that 2 moles of hydrogen gas reacts with one mole of oxygen gas to form 2 moles of water

-Hence, the correct choice is B

6 0
3 years ago
The area of a sector is 30 m2 in a circle with radius 4 m. What is the arc length of the sector?
Sunny_sXe [5.5K]

Answer:

15 m

Step-by-step explanation:

The area of the circle is

A =pi r^2

A = pi 4^2 = 16 pi

The area of the sector is 30

The fraction is

30/16 pi  

Take this time 2pi which are the  radians of a circle

30 /16 pi * 2 pi = 15/4

This is the number of radians the angle is

The arc length is s = r * theta where theta is in radians

s = r  theta

  = 4 * 15/4

  = 15

5 0
3 years ago
5 pints of red and 4 pints of yellow make orange paint. if 32 pints of yellow paint are mixed, how many pints of orange paint wi
frez [133]

Answer:23

Step-by-step explanation:

add 5 and 4 then subtract it from 32

3 0
4 years ago
Read 2 more answers
Other questions:
  • Question 15
    9·1 answer
  • Answer these please.
    5·1 answer
  • In the last chapter, we looked at three outliers arising from a plot of Average Wind Speed by Month in the Hopkins Forest. Each
    5·1 answer
  • 5
    7·1 answer
  • Hey i need help for this
    5·2 answers
  • Sophia read a total of 10 books over 2 months. If Sophia has read 20 books so far, how many months has she been with her book cl
    7·2 answers
  • 21 more than a number
    11·2 answers
  • A bag contains marbles of 4 different colors: 8 blue marbles , 24 red marbles, 16 grreen marbles, 4 yellow marbles. What is the
    13·1 answer
  • Five friends had lunch together. Their
    11·1 answer
  • Mr Gardener wants to have an annual intrest off 1000. if the annual intrest rate is 5% how much money should he invest
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!