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
seraphim [82]
3 years ago
5

there are some cows and some chickens, if there are a total of 40 heads and 112 legs, how many cows are there

Mathematics
2 answers:
Dominik [7]3 years ago
5 0

ummm I think I know but I don't at the same time take away 40 from 112 and theres you answer♥.



Serga [27]3 years ago
5 0
4x + 2(40-x) = 112
4x + 80 - 2x = 112
2x = 32
x = 16

so 16 cows and 24 chickens
You might be interested in
Suppose a certain computer virus can enter a system through an email or through a webpage. There is a 40% chance of receiving th
DedPeter [7]

Answer:

P = 0.42

Step-by-step explanation:

This probability problem can be solved by building a Venn like diagram for each probability.

I say that we have two sets:

-Set A, that is the probability of receiving this virus through the email.

-Set B, that is the probability of receiving it through the webpage.

The most important information in these kind of problems is the intersection. That is, that he virus enters the system simultaneously by both email and webpage with a probability of 0.17. It means that A \cap B = 0.17.

By email only

The problem states that there is a 40 chance of receiving it through the email. It means that we have the following equation:

A + (A \cap B) = 0.40

A + 0.17 = 0.40

A = 0.23

where A is the probability that the system receives the virus just through the email.

The problem states that there is a 40% chance of receiving it through the email. 23% just through email and 17% by both the email and the webpage.

By webpage only

There is a 35% chance of receiving it through the webpage. With this information, we have the following equation:

B + (A \cap B) = 0.35

B + 0.17 = 0.35

B = 0.18

where B is the probability that the system receives the virus just through the webpage.

The problem states that there is a 35% chance of receiving it through the webpage. 18% just through the webpage and 17% by both the email and the webpage.

What is the probability that the virus does not enter the system at all?

So, we have the following probabilities.

- The virus does not enter the system: P

- The virus enters the system just by email: 23% = 0.23

- The virus enters the system just by webpage: 18% = 0.18

- The virus enters the system both by email and by the webpage: 17% = 0.17.

The sum of the probabilities is 100% = 1. So:

P + 0.23 + 0.18 + 0.17 = 1

P = 1 - 0.58

P = 0.42

There is a probability of 42% that the virus does not enter the system at all.

5 0
3 years ago
What is 2 2/3 in simplest form
Montano1993 [528]
Mixed fraction: 8/2
6 0
2 years ago
Read 2 more answers
Sarah planted two1 acre gardens one had three sections of flowers and the other had 4 sections of flowers she plans to divide bo
EastWind [94]
Each garden will have 12 sections of flowers
8 0
3 years ago
Read 2 more answers
Find the GCF. 12, 18, and 84
Dmitry [639]

Answer: 6

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
The diameter and height of this cylinder are equal to the side length, s, of the cube in which the cylinder is inscribed. What i
fiasKO [112]

Answer:

V = (π/4)s³

Step-by-step explanation:

The volume of a cylinder can be found using the formula ...

V = πr²h

In this problem, we have r=s/2 and h=s. Filling in these values, the volume is ...

V = π(s/2)²·s = (π/4)s³

3 0
3 years ago
Other questions:
  • Which of the 4 is correct
    8·1 answer
  • Find the​ (a) mean,​ (b) median,​ (c) mode, and​ (d) midrange for the data and then​ (e) answer the given question.
    15·1 answer
  • ANSWER FOR BRAINLEST Debbie is making an abstract painting with two triangles. The dimensions of the painting are shown below: T
    12·2 answers
  • A study intends to estimate a population mean with an unknown population standard deviation and a sample size of 15. Which of th
    10·1 answer
  • The graph below is the solution for which set of inequalities?
    12·1 answer
  • I need help pls help me!!!!
    6·1 answer
  • Lauren is replacing a door that measures 80 inches by 39. What is the distance between opposite corner of the door
    14·1 answer
  • Find the values of x, y, and z in the triangle to the right
    9·1 answer
  • <img src="https://tex.z-dn.net/?f=%20%5Clarge%7B%5Cbold%20%5Cred%7B%20%5Csum%20%5Climits_%7B8%7D%5E%7B4%7D%20%7Bx%7D%5E%7B2%7D%2
    8·2 answers
  • Which ordered pair is a solution to the following system of inequalities?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!