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
Tresset [83]
3 years ago
12

12.391/3.8 to the nearest whole number

Mathematics
2 answers:
IgorLugansk [536]3 years ago
7 0
If you round to nearest whole number, it is 3
seropon [69]3 years ago
3 0
I think it would be 3
You might be interested in
A triangular parking lot is paved outside a new shopping center,. The lengths of the sides of the parking lot are 100 meters, 11
lora16 [44]

Do you do cyberschool by chance?

7 0
3 years ago
It takes two hours for two machines to manufacture 10000 parts. If machine #1 can do the job in one hour less than machine #2, h
elena-14-01-66 [18.8K]

Answer:

Time machine one = 3.56

Time machine two = 4.56

Step-by-step explanation:

Let machine 2 do the job in x hours

Let machine 1 do the job in x - 1 hours.

The general formula for this problem is

Time = A*B/(A + B)

Givens

Time = 2 hours

B = x hours alone

A = x - 1 hours alone.

#################

x *( x - 1)

======= = 2

(x + x - 1)

(x^2 - x)/(2x - 1) = 2

x^2 - x = 2(2x - 1)

x^2 - x = 4x - 2

x^2 - 5x + 2 = 0

a = 1

b = - 5

c = 2

This gives 2 roots

x = 4.56

x = 0.43

The second root will not work because when 1 is subtracted from 0.43 the time give will be minus, which won't work.

Time for machine 2 is 4.56

The time for machine 1 is 3.56

Check

(A * B)/(A + B) = 2

A = 4.56

B = 3.56

Time = 4.56*3.56/(4.56 + 3.56)

Time = 16.2336/(8.12)

Time = 1.9992

The rounding error in the check comes from the rounding error in the times.  

4 0
4 years ago
Sherman has 3 cats and 7 dogs. He wants to buy a toy for each of his pets. Sherman has $91 to spend on pet toys. How much can he
Tamiku [17]

91 \div (3 + 7)
3 + 7 = 10
91 \div 10 = 9.1
3 0
3 years ago
kevin and some college friends are hiking on a trail that is 70 feet above sea level they hike into a canyon that is about 14 fe
Fiesta28 [93]
84 feet because you would just add the 70 and 14 together
5 0
3 years ago
joanne bought 3 baseball cards for $160. if the first card was as expensive as the combined price of the second and the third ca
BARSIC [14]
Let the price of the 3rd card be c. Now we can write the equation:
c + (c + 20) + (c + c + 20) = 160 .........(1)
Simplifying the left hand side of equation (1), we get:
4c + 40 = 160 .........(2)
Subtracting 40 from both sides of equation (2) gives:
4c = 120
from which c = $30.
Therefore the price of the second card = 30 + 20 = $50
and the price of the first card = 30 + 50 = $80.
4 0
4 years ago
Other questions:
  • Solve for x! Please help!!
    5·1 answer
  • 7 divided by what equals 28?
    5·2 answers
  • At the grocery store, Tina counts eight cartons with 6 eggs each, forty cartons with 12 eggs each, and twenty cartons with 18 eg
    12·2 answers
  • A copy machine makes 114, copies in 4 minutes and 45 seconds. How many copies does it make per minute?
    13·1 answer
  • Angles ∝ and β are the two acute angles in a right triangle. Use the relationship between sine and cosine to find the value of ∝
    15·1 answer
  • Identify the like terms, explain how you know they are
    7·1 answer
  • The following expression represents the density of an object that has a mass of m and a volume of V.
    8·2 answers
  • True False
    14·1 answer
  • 78.89-42.1 is equalto what
    14·2 answers
  • PLZ HELP ASAP I NEED A ANSWER!!
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!