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
tangare [24]
2 years ago
6

In a pen with rabbits and chickens someone counted 25 heads and 80 legs a rabbit has four legs and each chicken has 2 legs, how

many chickens and rabbits are there?
Mathematics
2 answers:
Basile [38]2 years ago
7 0
Let "rabbits" be represented by the variable "x"
and "chickens" be represented by the variable "y"

then in total we have 25 animals
so  x + y = 25
-> y = -x + 25
and since a rabbit has four legs and a chicken has two legs
and there are 80 legs in total
4x + 2y = 80
-> 2x + y = 40
-> y = -2x + 40

[I had solved for y for each equation]
and since we are looking for when  y = y
-x + 25 = -2x + 40   [we can solve for x from here]
x + 25 = 40     [added 2x to both sides]
x = 15  [subtracted 25 from both sides]

then we can plug this back into
y = -x + 25
to get  y = -15 + 25 = 10

therefore there are 15 Rabbits and 10 Chickens
Komok [63]2 years ago
6 0
I just kind of sat here playing with numbers i dont really know a shortcut but the answer is 10 chickens and 15 rabbits 
10*2= 20 each chicken has two legs so thats 10 heads 20 legs
15*4=60 each rabbit has four legs so thats 15 heads 60 legs
15+10=25 heads
20+60=60 legs
You might be interested in
Kim is y years old. Jasper is twice as old as Kim, or 2y years old. Lorenzo is 2 years older than Jasper, or (2y + 2) years old.
Veronika [31]

Answer:

5y+11

Step-by-step explanation:

y+2y+2y+2+9

5y+11

4 0
2 years ago
Which expression is equivalent to ^3 sqrt x^10?
mrs_skeptik [129]

Answer:


Step-by-step explanation:

The answer id D, ^3 sqrt x^9 times x

8 0
3 years ago
Read 2 more answers
A person can pay $2 for a membership to the science museum and then go to the museum for just $1 per visit. For a member of the
Anastasy [175]
33 × 2 = 66
66 + 33 = 99

Total cost would be $99
8 0
3 years ago
Whats the function for each of the given domain values?
rosijanka [135]

Answer:

y={-5,-4,-5/2,-13/3}

Step-by-step explanation:

a.f(-2)=y=1/2(x)-4

substitute -2for x

y=1/2(-2)-4

y=-1-4

y=-5

b.f(0)

y=1/2(0)-4

y=0-4

y=-4

c.f(3/2)

y=1/2(3/2)-4

3/2-4

find the L.C.M=2

3/2-4/1

3-8/2

-5/2

d.f(-2/3)

y=1/2(-2/3)-4

-2/6-4

2 into itself 1 ,2 into 6 ,3

-1/3-4

find the least common multiple equal to 3

-1/3-4/1

-1-12/3

y=-13/3

7 0
3 years ago
What is the sign of -1042 + 1042?
pentagon [3]

Answer:

Its a negative and it will equal -2804

7 0
3 years ago
Read 2 more answers
Other questions:
  • 3.Write the product as a trinomial. (2r – 5)(r + 10)
    13·2 answers
  • [ f(x) = 3x + 2<br> g(x) = x2<br> Find gf(5)<br> Find fg(x)
    10·1 answer
  • Help meee it's pythagorean theorem, just need answers plsssssss
    5·1 answer
  • ILL GIVE BRAINLEST:))
    7·1 answer
  • HELP I’ll give you brainliest <br> This is timed I have 5 minutes
    15·1 answer
  • When Albert was born, he was 19.5 inches "tall". Today, on his 13th birthday, Albert is four feet, nine inches.
    8·1 answer
  • What ur fav ainme :)
    12·2 answers
  • A recipe requires 1/3 cup of milk for each 1/4 cup of water. How many cups of water are needed for each cup of milk?
    6·2 answers
  • Divide 320 into 8 equal groups
    11·1 answer
  • What is the total cost of 1.2 cubic yards of soil if it sells for $24 per cubic yard ?​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!