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
Hitman42 [59]
3 years ago
7

Andell is 9 years older than Arnez. arnez is 3 years younger than Marianne. the sum of their ages is 24. what is the age of each

child
Mathematics
1 answer:
Harman [31]3 years ago
5 0

Answer:

Arnez is 4. Andell is 13. Marianne is 7.

Step-by-step explanation:

Let x represent Arnez's age. If we write out an equation, we end up with this:

24 = (9 + x) + (x + 3) + x

24 = 9 + x + x + 3 + x

24 = (x + x + x) + (9 + 3)

24 = 3x + 12

24 - 12 = 3x + 12 - 12

12 / 3 = 3x / 3

4 = x

You might be interested in
Prove the identity (cosx+cosy)^2+(sinx-siny)^2= 2+2cos(x+y)
astra-53 [7]
(cos(x) + cos(y))^2 + (sin(x) - sin(y))^2 Remove the brackets

cos^2(x)
+ cos^2(y) + 2cos(x)*cos(y) + sin^2(x) - 2(sin(x)*sin(y) + sin^2(y) Combine these two in bold to make 1 because sin^2(x) + cos^2(x) = 1

1 + cos^2(y) + 2cos(x)*cos(y) - 2*sin(x)*cos(y) + sin^2(y) 
These two in bold also make 1

2 + 2cos(x)*cos(y) - 2*sin(X)*sin(y) Bring out a common factor of 2
2 +2(cos(x)*cos(y) -  sin(x)*sin(y) )

but cos(x+y ) = cos(x)*cos(y) - sin(x)*sin(y)

2 + 2* cos(x + y) is your final answer. 

4 0
3 years ago
Read 2 more answers
The PE class has 12 boys and 8 girls. What is the maximum number of teams that the teacher can divide the class into so that eac
Ugo [173]

Answer:

B. 4

Step-by-step explanation:

The maximum number of teams the teacher can divide the class into is 4. I got it right on ED2020.

6 0
3 years ago
Read 2 more answers
Help I WILL GIVE Brainiest!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
kondor19780726 [428]

Answer:

b. infinite solutions

Step-by-step explanation:

-\frac{1}{2}x+\frac{1}{2}y=-1\\\\\textsf{subtract} \ -\frac{1}{2}y \ \textsf{from both sides:}\\\\\implies -\frac{1}{2}x=-1-\frac{1}{2}y\\\\\textsf{mulitply both sides by -2:}\\\\\implies x=2+y\\\\\textsf{subtract} \ y \ \textsf{from both sides:} \ x-y=2

Therefore, the graphs are the same.

If the graphs of the equations are the same, then there are an infinite number of solutions that are true for both equations.

6 0
2 years ago
Read 2 more answers
What’s the answer to this problem , figure out the area and perimeter of this triangle
Zigmanuir [339]

Answer:

                Area = 67.5 m²

        Perimeter = 69 m

Step-by-step explanation:

<h3>Area of triangle:</h3>

   b = 27 m  & h = 5 m

     \sf \boxed{\text{\bf Area of triangle =$\dfrac{1}{2}bh$}}

                                   \sf = \dfrac{1}{2}*27*5\\\\     =\dfrac{135}{2}\\\\= 67.5 \ m^2

<h3>Perimeter of triangle:</h3>

       Perimeter = sum of all sides

                         = 27 + 34 + 8

                         = 69 m

4 0
2 years ago
Ella purchased a game that was on sale 12% off. The sales tax in her county is 6%. Let y represent the original price of the gam
spayn [35]
Let y represent the original price of a game.
<span>Ella purchased a game that was on sale 12% off which means that the new price of the game is 88% of the original price, so:
</span>y*88/100&#10;=0.88y
Next, t<span>he sales tax in her county is 6%, which means that the the now price is 106% to the original price, so:
</span>0.88y*106/100&#10;=0.88(1.06)y&#10;=0.9328y. As a result, the final cost can represent under the form of 0.9328y. Hope it help!
3 0
3 years ago
Other questions:
  • Which sample size of a population of 200 is most likely to give a reliable conclusion?
    11·1 answer
  • Write these numbers in order starting with the smallest <br> 2.303 , 2.3 , 2.33, 2.03
    14·2 answers
  • For f (x) = 4x +1 and g(x) = x2-5, find
    10·1 answer
  • What’s the answer plz help
    9·1 answer
  • Y - 11 = 3(x-2) write an equation in slope intercept form
    6·1 answer
  • How do I solve for e?<br> 9e+4=-5e+14+13e
    8·2 answers
  • Can u pls help me with this question
    15·1 answer
  • Four rulers and three pencils cost £2.15
    6·1 answer
  • Find the polynomial of least degree in standard form with the given roots:<br> x = 2, 3i
    10·1 answer
  • Rolling a six sided die and getting a number less than 4
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!