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
nekit [7.7K]
2 years ago
15

A tutor work with 3 students. The oldest student is 6 years oldder then the middle student, and the youngest student is 3 years

younger than the middle student. The sum of the ages of the students is 30. How many years old is the youngest student
Mathematics
1 answer:
Dennis_Churaev [7]2 years ago
6 0

Answer:

9 years old.

Step-by-step explanation:

Since the ages of all of these students are being represented in relation to the middle student's age then we can create formulas for each student and then apply them to the formula for the sum of their ages and solve for the middle child's age (M) like so... (oldest child's age is represented by variable O and youngest child's age is represented by variable Y)

O = M + 6

Y = M - 3

30 = (M+6) + M + (M-3)  ... combine like terms

30 = 3M + 3  ... subtract 3 from both sides

27 = 3M  ... divide both sides by 3

9 = M

Now we know that the middle child is 9 years old.

You might be interested in
Hey! please help i’ll give brainliest
Anuta_ua [19.1K]

Answer:

b

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
|-25.6|+|-11.4| What is the answer to this
12345 [234]
37. The absolute value symbol turns any negative number positive if it's within those brackets, so that's why the answer is positive. Hope this helped!
3 0
2 years ago
1. Juan y Pedro viajan a España de vacacion
olga_2 [115]

Answer:

€ 5000

Step-by-step explanation:

¡Espero que esto ayude!

=)

8 0
2 years ago
Read 2 more answers
McKenzie runs 1.5 mi every 10 min. At this rate, how many miles does she run in 1 hour? Enter your answer in the box.
prohojiy [21]
There are 60 minutes in an hour. 6x10=60. if 6*10=50, and there are 1.5 mi per every 10 minutes, we multiply 1.5 times 6 to get our answer, which is 9.

our answer is 9, i think
8 0
2 years ago
Read 2 more answers
Hi everyone how are you and what is 4 divieded by 12
rusak2 [61]

ookies. OK

How to calculate 12 divided by 4

Long Division

Here we will show you step-by-step with detailed explanation how to calculate 12 divided by 4 using long division.

Before you continue, note that in the problem 12 divided by 4, the numbers are defined as follows:

12 = dividend

4 = divisor

Step 1:

Start by setting it up with the divisor 4 on the left side and the dividend 12 on the right side like this:

4 ⟌ 1 2

Step 2:

The divisor (4) goes into the first digit of the dividend (1), 0 time(s). Therefore, put 0 on top:

0

4 ⟌ 1 2

Step 3:

Multiply the divisor by the result in the previous step (4 x 0 = 0) and write that answer below the dividend.

0

4 ⟌ 1 2

0

Step 4:

Subtract the result in the previous step from the first digit of the dividend (1 - 0 = 1) and write the answer below.

0

4 ⟌ 1 2

- 0

1

Step 5:

Move down the 2nd digit of the dividend (2) like this:

0

4 ⟌ 1 2

- 0

1 2

Step 6:

The divisor (4) goes into the bottom number (12), 3 time(s). Therefore, put 3 on top:

0 3

4 ⟌ 1 2

- 0

1 2

Step 7:

Multiply the divisor by the result in the previous step (4 x 3 = 12) and write that answer at the bottom:

0 3

4 ⟌ 1 2

- 0

1 2

1 2

Step 8:

Subtract the result in the previous step from the number written above it. (12 - 12 = 0) and write the answer at the bottom.

0 3

4 ⟌ 1 2

- 0

1 2

- 1 2

3 0
2 years ago
Other questions:
  • Find the length of arc RQ. Use 3.14
    14·1 answer
  • what number must be added to 3 and 8 so that the ratio of the first number to the second number is equal to 3 :4​
    7·1 answer
  • Solve Quantity 9 plus x end quantity over 3x is equal to five-sixths. Show all work.
    15·2 answers
  • What is the exact value of cos(–60º)?
    12·2 answers
  • Matty jogs 9 km/hr. Compute Matty's speed in m/s.
    15·1 answer
  • For exercise 1-5 whole is one hundredths grid. Write fraction and decimal names for the shaded part
    12·2 answers
  • What are all the subsets of the set? {–3, 6}
    7·1 answer
  • The measure of angle A in ABC is twice the measure of angle B and the measure of angle C is 20° less than the measure
    12·1 answer
  • 4x^5/2x^2+5=59 <br>please help ​
    12·1 answer
  • Find all solutions by factoring.<br> c? + 13c + 40 = 0
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!