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
kirill [66]
3 years ago
5

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 34 hands raised. How many students have piercings both on their ears and their noses?
Mathematics
1 answer:
stepan [7]3 years ago
6 0
2 students have both their nose and ears pierced
You might be interested in
Please help ASAP!! I'm in. a google meet rn and need to prove I got this question right
Aleks04 [339]

Answer:

x = 5.4

Step-by-step explanation:

(This question has already been answered, but both of the incorrect ones were deleted, so for future reference...)

Fig A is a scale image of Fig D. These two quadrilaterals are similar, and thus, the side lengths of corresponding sides are proportional. Set the proportion x/3 = 7.2/4 (you could alternatively write it as x/7.2 = 3/4 but for the simplicity's sake, and assuming anyone who has this problem would already know how to solve proportions like these...)

7.2/4 = 1.8

so

x/3 = 1.8

now multiply both sides by 3 to get x = 5.4

4 0
3 years ago
This probability distribution shows the typical distribution of pitches thrown to a batter in a given at bat in a baseball game.
Vikki [24]

Answer:

0.35

Step-by-step explanation:

This probability distribution is shown below:

Pitch                   1            2        3          4         5

Frequency         15         20      40        15        10

Probability         0.15     0.2      0.4      0.15      0.1

The probability that the pitcher will throw fewer than 3 pitches to a batter = P(X < 3)

X  is the number of pitches thrown. Therefore:

P(X < 3) = P(X = 1) or P(X = 2)

The additive rule pf probability states that if two events X and Y are dependent events, the probability of X or Y occurring is the sum of their individual probability.

P(X < 3) = P(X = 1) or P(X = 2) = P(X = 1) + P(X = 2) = 0.15 + 0.2 = 0.35

The probability that the pitcher will throw fewer than 3 pitches to a batter = 0.35

8 0
3 years ago
1/3 of 7 as a fraction
klio [65]
Hey There! Whoever we see the keyword “of”, we know that it’s multiplication Therefore we’re multiplying 1/3 and 7/1 that gives us 7/3

3 0
3 years ago
Pls help will give brainliest!!
klio [65]

25 × 4 = 100 - the number of all candies

2/5 of 100 is

\dfrac{2}{5}\cdot100=\dfrac{200}{5}=40

The third model is shaded to show the total number of caramel candies in 4 bags.

6 0
3 years ago
Tell me all the properties of algebra
Keith_Richards [23]

Answer:

  • Commutative Property of Addition.-  
  • 2 + 3 = 3 + 2
  •  Commutative Property of Multiplication.- ex. 5 × 7 = 7 × 5  
  • Associative Property of Addition.- ex.(2 + 3) + 6 = 2 + (3 + 6)  
  • Associative Property of Multiplication.- ex. (7 × 3) × 10 = 7 × (3 × 10)
  • Distributive Properties of Addition Over Multiplication- ex. 2 × (2 + 8) = 2 × 2 + 2 × 8  
  • (2 + 8) × 10 = 2 × 10 + 8 × 10
  • The reciprocal of a non zero real number a is 1/a.- ex. reciprocal of 5 is 1/5 and 5 × (1/5) = 1

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • The circumstance of a circle is 45.53 in what is the diameter of circles
    5·1 answer
  • To prove "p is equal to q" using an indirect proof, what would your starting assumption be?
    10·1 answer
  • If two angles are supplementary the their sum is 180
    9·2 answers
  • Is the function y=<br> -<br> 9x–6 linear
    5·1 answer
  • Find the missing dimension of the cylinder. Round your answer to the nearest whole number.
    7·2 answers
  • What is the answer to this equation in distributive property -4(2x-5)
    9·2 answers
  • What is the slope intercept form for this?<br> Slope= -1 Y intercept= 8
    6·1 answer
  • It takes 20 minutes for 5people to paint 5 walls. How many minutes does it take 9 people to paint 9walls?
    11·1 answer
  • How do i solve this question 5+y=-15 ?​
    6·2 answers
  • Jen butler has been pricing speed-pass train fares for a round trip to New York three adults and four children must pay $118 two
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!