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
pychu [463]
3 years ago
9

Eleni is n years old. In thirteen years she will be twenty four years old-

Mathematics
2 answers:
Alja [10]3 years ago
7 0
Well do 24 - 13.

You should get 11.

N = 11.
Rina8888 [55]3 years ago
3 0
The easiest way to solve this is..
N+13=24, which is really 24-13. So n= 11
You might be interested in
If you were to solve the following system by substitution, what would be the best variable to solve for and from what equation?2
aivan3 [116]

The second equation because they all have a common factor of 3. You can get x by itself. However, with the first one, you'll end up with fractions instead.

8 0
3 years ago
Keenan set his watch 3 seconds behind, and it falls behind another
disa [49]

Answer:

in *42* days it will be 45 seconds behind

Step-by-step explanation:

it is already 3 behind and if its only 1 second everyday then you add 1 day until you get to 45 which 42+3 is 45 so the correct answer is 42 days.

6 0
3 years ago
Simplify the expressions by combining like terms<br><br> 1.5r - 3r + 8r + 2.5r
Tomtit [17]

Answer:

9r

Step-by-step explanation:

1.5r - 3r + 10.5r

10.5r + 1.5r = 12r

12r - 3r = 9r

Final Answer = 9r

5 0
3 years ago
Mr. Wallace needs to divide his class or 23 students into 9 groups. Each group can have two or three students. If a is the numbe
IRINA_888 [86]

Answer:

d)  Mr.Wallace can use the following equations:

    a + b = 9

   2 a + 3 b = 23

Step-by-step explanation:

Here, the total number of students = 23

Number of groups = 9

Each group can have 2 or 3 students.

a is the number of  groups of 2.

⇒ Total students in a groups  = a x (Number of  student in each group)

= a x 2 = 2 a

b is the number of groups of 3

⇒ Total students in b groups  = b x (Number of  student in each group)

= b x 3 = 3 b

So, according to the question:

Total number of groups formed = 9

⇒ a + b = 9

Total number of students  = 23

or Number of students in  ( a  group + b group ) = 23

⇒ 2 a + 3 b = 23

Hence, Mr.Wallace can use the following equations:

a + b = 9

2 a + 3 b = 23

6 0
3 years ago
A Solve each problem.<br>1. Henry flies his plane at 240 mph for 3 hours. How far does he travel?​
babymother [125]

Distance = speed x time

Distance = 240 x 3 = 720 miles

4 0
3 years ago
Read 2 more answers
Other questions:
  • Match each expression to its equivalent standard form.
    11·1 answer
  • In right triangle PQR, if sinP=5/13, then tanP=<br><br> 5/12<br> 12/13<br> 12/5
    15·2 answers
  • Welp, I'm truly stumped
    9·2 answers
  • Best answer will get BRAINILIST!!!! Todd ran three-fourths of a half mile and dropped out of the 800 meter race. His pace was 12
    5·2 answers
  • Find the sum of the first 7 terms of the following series, to the nearest integer. 125,50,20,...
    9·1 answer
  • PLEASE PLEASE PLEASE HELP!!!!!!!!!
    13·1 answer
  • Write the augmented matrix for each system of equations.
    7·1 answer
  • Y=-155. Put in a table of 3 rows.
    9·1 answer
  • If B is the midpoint of AC, and AC= 8x-20, find BC.
    5·1 answer
  • Please answer this with full explanation.
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!