answer.
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
Katena32
1 month ago
5

L'età media di Aldo, Bruno, Carlo e Davide è 16 anni. Se non si tiene conto di Davide, l'età media dei tre rimanenti sale a 18.

Qual è l'età di Davide? ​
Mathematics
1 answer:
AnnZ [12.3K]1 month ago
4 0

Answer:

Davide is 10 years old.

L'età di Davide è 10.

Step-by-step explanation:

The average ages of Aldo, Bruno, Carlo, and Davide amount to 16 years.

Let’s denote:

x for Aldo's age.

y for Bruno's age.

z for Carlo's age.

w for Davide's age.

The average for all four is 16 years.

This gives us:

16 = \frac{x + y + z + w}{4}

x + y + z + w = 64

Excluding Davide, the average age of the other three is 18. Therefore:

18 = \frac{x + y + z}{3}

x + y + z = 54

Substituting into the original equation:

x + y + z + w = 64

54 + w = 64

w = 10

Hence, Davide’s age is indeed 10.

L'età di Davide è 10.

You might be interested in
According to the U.S. Census Bureau (2016), a substantial pay gap still exists. The average American man, with an advanced colle
Leona [12618]

Answer:

The earnings gap, over a career spanning 30 years, between men and women totals $1,200,150

Step-by-step explanation:

Calculated annually.

The typical male earns $90,761 each year.

The typical female earns $50,756 per annum.

Therefore, the annual difference is:

90,761 - 50,756 = 40,005

Across 30 years:

30*40,005 = 1,200,150

The earnings gap over a 30-year career, when comparing men and women, is $1,200,150

0 0
2 months ago
There are 345 students at a college who have taken a course in calculus, 212 who have taken a course in discrete mathematics, an
AnnZ [12381]

Answer:

There are 369 students who enrolled in either calculus or discrete mathematics.

Step-by-step explanation:

I'll create a Venn diagram to illustrate these figures.

Let’s define:

A represents the count of students who completed calculus.

B stands for those who took discrete mathematics.

We have the following:

A = a + (A \cap B)

Here, a denotes the students who studied calculus exclusively, while A \cap B represents those who took both subjects.

Using the same reasoning:

B = b + (A \cap B)

There are 188 students taking both calculus and discrete mathematics.

This implies that A \cap B = 188

A total of 212 students studied discrete mathematics.

<pBased on this, B = 212

345 students have attended a calculus course.

<pSo, from this information, A = 345

We find the total number of students who took either calculus or discrete mathematics.

(A \cup B) = A + B - (A \cap B) = 345 + 212 - 188 = 369

A total of 369 students participated in either calculus or discrete mathematics.

4 0
1 month ago
A container contains 13 almonds, 8 walnuts, and 19 peanuts. You randomly choose one nut and eat it. Then you randomly choose ano
Inessa [12570]

Answer: 8/40 and 13/40

Step-by-step explanation:

6 0
21 day ago
16.A guidance counselor is planning schedules for 30 students. Sixteen students say they want to take French, 16 want to take Sp
PIT_PIT [12445]

Response: 7

Detailed explanation:

A Venn diagram can help visualize this problem.

There are a total of 5 students interested in both French and Latin.

Out of these, 3 students also want to learn Spanish, meaning only 2 students want solely French and Latin.

Moreover, there are 5 students who wish to study only Latin.

This results in 1 student wanting both Latin and Spanish, calculated by 11 - 5 - 3 - 2.

There are 8 students who desire only Spanish, and 4 students who want both Spanish and French.

In the same manner, those wishing to study only French amount to 16 - 4 - 3 - 2 = 7.

8 0
1 month ago
Read 2 more answers
How much would it cost to buy 100 shares in ODX group Inc and 300 shares
PIT_PIT [12445]

Complete Question

The entire question can be found in the first uploaded image

Answer:

The expense for acquiring 100 shares of ODX group Inc and 300 shares of peer Comms Lts is

         C  =  \$ 775

Step-by-step explanation:

   From the chat, the expense for 100 shares of ODX is \$175

    The price of 100 shares of peer Comms Lts is \$ 200

Thus, the cost for 300 shares of peer Comms Lts amounts to k  =  3 * 200 =  \$ 600

Overall, the total cost for 100 shares of ODX group Inc and 300 shares of peer Comms Lts can be calculated as

           C  =  175 + 600

           C  =  \$ 775

 

 

7 0
2 months ago
Other questions:
  • A botanist found a correlation between the length of an aspen leaf and its surface area to be 0.94. Why does the correlation val
    5·1 answer
  • Which expression is equivalent to (f g) (5)?
    10·2 answers
  • From a bag containing 5 nickels, 8 dimes, and 7 quarters, 5 coins are drawn at random and all at once. What is the probability o
    12·1 answer
  • Mark noticed that his bus is late to school 5% of the time. He wants to design a spinner he can use to simulate the situation an
    12·2 answers
  • The function c(x) = 0.5x+70 represents the cost c (in dollars) of renting a truck from a moving company, where x is the number o
    8·2 answers
  • The photo shows a small coin. The scale from the actual coin to the photo is
    6·1 answer
  • The International Business Club starts the school year with $250.50 in their account. They spend $35 each month on activities. T
    11·1 answer
  • Credit cards place a three digit security code on the back of cards. What is the probability that a code starts with the number
    10·1 answer
  • If x = 3z and z=2y, then x=?
    10·1 answer
  • Consider coordinate system a, with the x axis along the plane. which forces lie along the axes?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!