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
g100num [7]
3 years ago
15

In a class of 40 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. Eight hands go up. Then the professor asked everyone with a pierced ear to do likewise. This time there are 35 hands raised. How many students have piercings both on their ears and their noses?
Mathematics
1 answer:
viktelen [127]3 years ago
6 0

Answer:

3 students

Step-by-step explanation:

If everyone in the class has either a pierced nose or ear, we just simply have to add up the total number of hands raised and minus the number of students in the class.

35+8=43

43-40=3

3 students have both a pierced nose and pierced ear.

You might be interested in
Please explain the answer I don't know how to do it. (slope on a table) 19 points
svlad2 [7]

Answer:

x=4

y=3

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Thirty pounds of grass seed will cover 1\3 of an acre. Which unit rate describes this situation?
erik [133]
As always, the "unit rate" can be written two ways. You have not specified which one you want.

.. (30 lb)/(1/3 ac) = 90 lb/ac

.. (1/3 ac)/(30 lb) = (1/90) ac/lb
7 0
3 years ago
The circular play area has a diameter of 16 feet. There is a walkway that surrounds the play area and is 3 feet wide. What is th
patriot [66]

Answer:

If you use 3.14 as an approximation for PI, the answer will be A) 179 sq. feet.

Step-by-step explanation:

The process to determine the area of the sidewalk is computed by figuring the area of the outer circle (Diameter = 16' + 3' + 3') and subtracting the area of the fountain (Diameter = 16') from that.

Area of Circle = PI times Radius squared

Outer circle radius = (22 ft /2) = 11 ft

Area of outer circle (includes fountain area too) = 3.14 x 11 x 11 = 379.94 ~ 380

Inner circle radius = (16 ft / 2) = 8 ft

Area of Fountain = 3.14 x 8 x 8 = 200.96 ~ 201

Area of sidewalk =  380 - 201 =  179

Read more on Brainly.com - brainly.com/question/11852368#readmore

4 0
3 years ago
Thanks guys for the help. This one and one more and I’m done!
Karolina [17]

Answer: 60n^{3}

Step-by-step explanation:

To find the least common multiply, you must descompose 12 and 15 into their prime factors, as you can  see below:

12=2*2*3=2²*3

15=3*5

Choose the common and non common numbers with their greastest exponents:

3*5*2²=60

Now you must choose the common and non common variables with their greastest exponents:

n³

  Therefore, you can conclude that the least common multiply is:

60n^{3}

8 0
3 years ago
Read 2 more answers
Please help will mark brainliest if correct
dangina [55]

Answer:

B   -------   DE ≅ RS

it's B because DE and RS both contain the equal angles.

4 0
3 years ago
Other questions:
  • The equation is =360
    10·1 answer
  • Jerome bought eight packs of baseball cards at a garage sale. Each pack had 10 cards. He gave his younger sister three cards fro
    11·1 answer
  • Which relation below represents a one to one function
    7·2 answers
  • What is the answer to p2+14p-38=0
    9·2 answers
  • Use the net as an aid
    14·1 answer
  • I need brainly help with this math problem I reward with brainiest
    5·1 answer
  • Vera bought 10 cups of grape juice. If each serving is 1/3 cup, how many servings of grape juice did she buy?
    13·2 answers
  • The question is below pls helppppppppp
    11·2 answers
  • PLEAAAAASE help me if you have heart!!
    9·2 answers
  • Find k and help with the equation!
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!