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
zhuklara [117]
2 years ago
12

Old McDonald has some chickens and some cows. He counted 56 heads and 116 legs. How many chickens and how many cows does old McD

onald have? (The animals are not missing any legs or head's)
Mathematics
1 answer:
Elza [17]2 years ago
6 0

Answer: old McDonald has 54 chickens and 2 cows.

Step-by-step explanation:

Let x represent the number of chickens that old McDonald have.

Let y represent the number of cows that old McDonald have.

He counted 56 heads. A chicken and a cow has one head each. It means that

x + y = 56

He counted 116 legs. A chicken has 2 legs and a cow has 4 legs. It means that

2x + 4y = 116 - - - - - - - - -1

Substituting x = 56 - y into equation 1, it becomes

2(56 - y) + 4y = 116

112 - 2y + 4y = 116

- 2y + 4y = 116 - 112

2y = 4

y = 4/2 = 2

x = 56 - y = 56 - 2

x = 54

You might be interested in
Suppose a football team played 4 games and there were no ties. Which of the following would be a compound event? Explain!!
Tresset [83]
I would say D as it's the only different one
4 0
2 years ago
Read 2 more answers
Please help solve the question in the image
____ [38]

Answer:

✅On average Albany gets 20.967 inches rain pee year and Zachary gets 25.153 inches rain per year.

✅On average, it rains more in Zachary in a year.

Step-by-step explanation:

Mean annual rainfall on average = total amount of rainfall for the period of years ÷ 10

✔️Mean Annual rainfall for Albany (in.):

= (22.82 + 19.83 + 28.40 + 23.35 + 30.78 + 21.34 + 11.20 + 17.04 + 18.63 + 16.28) ÷ 10

= 20.967

✔️Mean Annual rainfall for Zachary (in.):

= (26.41 + 23.54 + 30.02 + 26.35 + 34.24 + 25.74 + 18.98 + 21.26 + 23.61 + 21.38) ÷ 10

= 25.153

✅Therefore, on average Albany gets 20.967 inches rain pee year and Zachary gets 25.153 inches rain per year.

✅On average, it rains more in Zachary in a year.

7 0
3 years ago
2 and 5. What is the LCM?
Masja [62]
Well, first of all, LCM means Lowest Common Multiple. So you have to write out the factors of each of the numbers. So that will be;
2= 2, 4, 6, 8, 10, 12, 14, 16, 18, 20
5=5, 10, 15, 20
  So now, you have to pick out the numbers that are common to both numbers. So;
10, 20
  10 and 20 are the only common numbers. So you have to look for the lowest common number. And that is 10. So the LCM is 10.. Hope i helped. Have a nice day. 
5 0
2 years ago
If you double radius of a circle, how does this affect the area of the circle
arlik [135]
It would quadruple the area of the circle.
5 0
3 years ago
On a number line, what is the distance between -12 and 20?
bija089 [108]
That would be a total of 32
3 0
3 years ago
Read 2 more answers
Other questions:
  • A taxi from the local airport charges a fee of $5 plus $0.55 per one-fourth mile. How much will it cost to travel 9 miles in the
    8·2 answers
  • Please need help ASAP!!! Answer and I’ll name you brainliest.
    12·1 answer
  • Solve the system of equations.<br> y=5x-9<br> y=3x +7
    8·1 answer
  • HELP MEEE!!!!!!!!!!!!!
    12·2 answers
  • A store sells 8 cans of soup for ​$22. How much would it cost you to buy 9 cans of soup​?It would cost ​$nothing.
    13·1 answer
  • If 1/2 - 1/3=x then x=
    5·1 answer
  • How much longer is dinner than the slide show?
    5·1 answer
  • 4 there are only red sweets and yellow sweets in a bag.
    15·1 answer
  • Find the following sums ( for letter C)
    9·1 answer
  • Question 8 using radians, find the amplitudeand period of each function and graph it
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!