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
larisa86 [58]
3 years ago
8

A chicken farmer also has cows for a total of 30 animals, and the animals have 66 legs in all. How many chickens does the farmer

have?
Mathematics
1 answer:
hammer [34]3 years ago
5 0

Answer:

27 chickens

Step-by-step explanation:

A chicken farmer also has cows for a total of 30 animals

Both animals have a total of 66 legs

Let a represent the number of chicken

Let b represent the number of cows

a + b= 30........equation 1

Since a chicken has only two legs and a cow has four leg then, the expression can be represented as

2a + 4b= 66........equation 2

From equation 1

a + b= 30

a = 30-b

Substitute 30-b for a in equation 2

2a + 4b= 66

2(30-b) + 4b= 66

60 - 2b + 4b= 66

60 + 2b= 66

2b= 66-60

2b= 6

b= 6/2

b= 3

Substitute 3 for b in equation 1

a + b = 30

a + 3=30

a= 30-3

a= 27

Hence the farmer has 27 chickens

You might be interested in
Hey, please help me, I'm fairly confused with this question.
Sati [7]

Answer:

10 times.

Step-by-step explanation:

The number in the tenths place is 90. The number in the ones place is 9. 9 times 10 is 90.

5 0
3 years ago
Please help with this (#25)!! my book doesn’t tell me
noname [10]
I'm not real sure if this is right but I did my best
7 0
3 years ago
Read 2 more answers
I need help, this is geometry
Artemon [7]

Answer:

∠P = 39º

∠Q=120º

∠R = 21º

Step-by-step explanation:

m∠P+m∠Q+m∠R=180º (sum of ∠s in a triangle)

2x-3+6x-6+x=180º (substitution)

9x-9=180º (algebra)

9x=189º (algebra)

x=21º (algebra) (this is ∠R)

(2x-3)=39º (algebra) (this is ∠P)

6x-6=120º (algebra) (this is ∠Q)

7 0
3 years ago
Read 2 more answers
The function y= 19,800/x is a rational function. Use this function to answer each question. What are the asymptotes of the funct
Ilya [14]

Answer:

Step-by-step explanation:

Given the function y = 19800/x

Vertical asymptote occurs at when f(x) = 0 where;

f(x) is the denominator of the given function.

From the expression given: f(x) = x

Since f(x) => 0, hence x = 0

To get the horizontal asymptote, we will look at the degree of the numerator and denominator. If the degree of numerator is less than the denominator, the horizontal asymptote will be zero. From the function, we can see that the degree of the numerator is zero (being a constant) and that of the denominator is 1.

Since 0<1, hence the horizontal asymptote is 0

x = 0, y = 0

5 0
3 years ago
Read 2 more answers
For the given expression identify the terms like terms coefficient and constant terms then simplify the expression -8c+-c+1
boyakko [2]

Answer:

The simplified expression is : -9c +1

Step-by-step explanation:

The like terms are -8c and -c

The constant term is 1

The simplified expression is :

-8c + -c + 1 = -9c +1

6 0
3 years ago
Other questions:
  • Can sometime tell me why the discriminate b^2-4ac doesn't identify trinomial 3x^2+4x-15 as something that's factorable with two
    11·1 answer
  • Question 5 of 8 -
    15·1 answer
  • Ariana has $1.40 worth of nickels and dimes. She has twice as many nickels as dimes. Determine the number of nickels and the num
    12·1 answer
  • Write 3,680,225 in expanded form​
    12·1 answer
  • 4(x - 2) = -12, x = 4​
    6·1 answer
  • 35 is 250% of what number?
    9·1 answer
  • Can someone help me with these questions.
    13·2 answers
  • Help my first time learning this it’s an easy problem
    8·2 answers
  • Which of the following represent opposites? –1 and 2 10 and 0 –20 and 21 11 and –11
    7·1 answer
  • Farrah borrowed $155 from her brother. She has already paid back $15. She plans to pay back $35 each month until the debt is pai
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!