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
Mariulka [41]
3 years ago
15

Old McDonald had a farm. In one pen the old farmer had chickens and bulls together. In that pen there were 40 animals in total,

but there were 130 legs. Can you figure out how many chickens and bulls are in that pen?
Mathematics
1 answer:
SVETLANKA909090 [29]3 years ago
8 0

Answer:

There are 15 numbers of chicken and 25 numbers of bulls.

Step-by-step explanation:

The pen had chickens and bulls.  The pen contains 40 animals in total. The number of legs in the pen is 130 .

Let

a = number of chicken

b = number of bull

a + b = 40................(i)

A chicken has 2 legs and a bull has 4 legs.

The total legs can be represented as

2a + 4b = 130...........(ii)

combine the equation

a + b = 40................(i)

2a + 4b = 130...........(ii)

a = 40 - b

insert the value of a in equation(ii)

2(40 - b) + 4b = 130

80 - 2b + 4b = 130

80 + 2b = 130

2b = 130 - 80

2b = 50

divide both sides by 2

b = 50/2

b = 25

Insert the value of b in equation (i)

a + b = 40

a + 25 = 40

a = 40 - 25

a = 15

There are 15 numbers of chicken and 25 numbers of bulls.

You might be interested in
I need help help me
GrogVix [38]

Answer: the last one

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
the piggybank had 25.65 in dimes and quarters if there were 20 more quarters than dimes, how many dimes were in the piggybank
Nadusha1986 [10]
X = number of dimes
y = number of quarters
---
10x + 25y = 2565
y = x + 20
---
put the system of linear equations into standard form
---
10x + 25y = 2565
x - y = -20
---
copy and paste the above standard form linear equations in to this solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
---
solution:
x = 59
y = 79
4 0
3 years ago
Write the number which is a third of the way from -2 to -7?
artcher [175]

Answer: -5

Step-by-step explanation: -3 , -4 , -5 is the third

5 0
3 years ago
ALGEBRA 2!!!!!!!HELP
Inessa [10]

Answer:

x = - 1, x = - 11

Step-by-step explanation:

Given

2| x + 6 | - 4 = 6 ( add 4 to both sides )

2|x + 6 | = 10 ( divide both sides by 2 )

| x + 6 | = 5

The absolute value function always gives a positive result, but the expression inside can be positive or negative, that is

x + 6 = 5 or - (x + 6) = 5

solve both

x + 6 = 5 ( subtract 6 from both sides )

x = - 1

or

- (x + 6) = 5 , that is

- x - 6 = 5 ( add 6 to both sides )

- x = 11 ( multiply both sides by - 1 )

x = - 11

8 0
3 years ago
According to the scale on a road map, 3 cm represents 45 kilometers. if two cities measure 10 cm apart on the map, how many kilo
denpristay [2]
150 Km.

Good luck! :)

4 0
3 years ago
Other questions:
  • HELP ME PLEASE, I NEED THIS DONE LIKE RIGHT NOW
    9·1 answer
  • You are considering leasing a store site that has 1,500 square feet. The landlord is asking for a rent of $50 per square foot, p
    15·1 answer
  • Plese can you help for this questiong 55+5
    5·2 answers
  • What is the sum of (2a - 3b) and (5b - a)
    15·1 answer
  • AYOOO HELPPPPP MATHHHH......? THANKKK UUUUU
    13·1 answer
  • How many whole numbers are there with not more than 4 digits IF YOU PUT A LINK OR UNHELPFUL ANSWER I WILL REPORT I WILL GIVE BRA
    14·1 answer
  • How to sovle f(x)=3x-6, for f(5)
    10·1 answer
  • Big money butts how to do.​
    10·1 answer
  • Find the slope of the line that passes through each pair of points.<br> (-3, 4) and (2, -3)
    10·1 answer
  • MODELS. a model ship is built to a scale of 1 centimeter. 5 meters. The legthn of the model is 30 centimeters what is the actual
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!