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
Tamiku [17]
3 years ago
8

A família Oliveira consiste no pai, na mãe e em alguns filhos. A idade média da família é de 18 anos. Sem contar com o pai, que

tem 38 anos, a idade média familiar diminui para 14 anos. Quantos filhos tem a família Oliveira? a) 2 b) 3 c) 4 d) 5 e) 6
Mathematics
1 answer:
Vladimir79 [104]3 years ago
3 0

Answer: e) 6

Step-by-step explanation:

Let x be mother + children = 18

Father's age = 38

Average age of the family = 14

38 + 18x /( x + 1 )= 14

Opening the bracket

38 + 18x = 14x + 14

Collecting like terms

24 = 4x

x = 6

no of children in the family is 6.

You might be interested in
Which of the following statements is correct? A. During times of high inflation, interest rates on new loans for cars, homes, an
svet-max [94.6K]

Answer:

D.

Step-by-step explanation:

The longer the interest rate, the more money it will generally cost someone.

8 0
3 years ago
Which statements are correct regarding the properties of trapezoids?
natulia [17]

Answer:

The diagonals of an isosceles trapezoid are congruent.  

The bases of a trapezoid are parallel.

4 0
3 years ago
Please help me with 6-9!!
kolezko [41]
I got C for 6 & 7. I haven't done this in a while so I don't know 8 & 9. I hope I helped!
4 0
4 years ago
What multiple of 8 gets an equal multiple of 9
musickatia [10]

Answer:

72

Explanation:

8*9=72

5 0
3 years ago
Savannah works as a sales rep and receives 4.5% for every $140 she sells. How much commission will she receive?
Kamila [148]
31.1 hope this helps
5 0
3 years ago
Read 2 more answers
Other questions:
  • I am a 2 dimensional shape. my perimeter is also known as a circumference
    5·2 answers
  • Find x in this proportion.<br> 5/2x =25/4 <br> x =<br><br> 2/5<br> 5/2<br> 4/5<br> 8/5
    5·1 answer
  • Function f is an exponential function. x −1 1 3 5 7 f(x) 14 4 64 1024 16,234 By what factor does the output value increase as ea
    6·1 answer
  • Which statement is the correct interpretation of the inequality -3&gt; -4?
    7·2 answers
  • What is the area of triangle LMN?
    15·2 answers
  • What’s the best way to revise?
    6·2 answers
  • A bookstore tracked the data of the weight of their deliveries and the number of books in each box. They created a scatterplot a
    5·2 answers
  • When a= -5, b = -2 and c=1. a(b+c) is?
    13·1 answer
  • What is the solution set for -2n-2≥2?<br> A. n≤-2<br> B. n≥-2<br> C. n≤0<br> D. n≥0
    5·2 answers
  • The sun of 2 positive numbers is 17. Their product is 60
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!