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
enot [183]
3 years ago
15

Resuelve:

Mathematics
1 answer:
jok3333 [9.3K]3 years ago
4 0

Answer:

A partir del problemas vamos a crear una ecuación donde X es una docena de huevos y Y una libra de mantequilla

entonces: 4 docenas de huevos y 3 libras de mantequilla es igual a 14.100

en mi primera ecuación seria: 4X + 3Y = 14.100

ahora haremos la segunda ecuacion: tres docenas y 1 libra de mantequilla

en mi segunda ecuación seria: 3X + 1Y = 8.700 el plan es sumar las dos ecuaciones pero yo quiero que al sumarlas la variable "Y" desaparezca así que mi segunda ecuación la voy a multiplicar pór (-3) quedándome todo así:

primera ecuación: 4X + 3Y = 14.100

segunda ecuacion multiplicada por -3: -9X - 3Y = -26.1

al sumarlas obtengo como resultado: -5X = -12

resolviendo esa ecuacion obtengo que X=  

X=2.4

luego reemplazas X en la primera ecuación: 4X + 3Y = 14.100

reemplazando seria: 4 x (2.4) + 3Y =14.100

9.6 + 3Y = 14.1000

3Y= 14.100 - 9.6

Y=  

Y=1.5

entonces concluimos que la docena de huevos cuesta 2.4 $ y la libra de mantequilla 1.5 $

Step-by-step explanation:

You might be interested in
A local company manufactures netbook computers. Their profit function is given by this equation: y equal minus x to the power of
r-ruslan [8.4K]
The equation described above can also be written as,
                    y = -x² + 100x + 4000
To get the number of notebooks that will give them the maximum profit, we derive the equation and equate to zero.
                  dy/dx = -2x + 100 = 0
The value of x from the equation is 50. Then, we substitute 50 to the original equation to get the profit. 
                   y = -(50^2) + 100(50) + 4000 = 6500
Thus, the maximum profit that the company makes is $6,500/day. 

8 0
3 years ago
Find the mean and range.<br><br> 26 19 23 39 31 34 23 25
sveticcg [70]
Range: largest number minus the smallest number
39 - 19 = 20
your range is 20

Mean: add all of the numbers and divide by the amount of numbers there are.

26+19+23+39+31+34+23+25= 220
220/8 = 27.5

your mean is 27.5

hope this helps
7 0
3 years ago
Read 2 more answers
You place a billiard cue against a billiard table. The foot of the billiard cue is 15 cm away from a table and the top of the bi
irinina [24]

Answer:

It would be 4

Step-by-step explanation:

When dealing with slope its always going to be rise over run, so 60/15 is 4

Hope this helps :)

8 0
2 years ago
Read 2 more answers
What’s the answer? I really need help with my home work
Sholpan [36]
There is 45.9 inches for the whole year so
7 0
3 years ago
Given that E=MC find E when M=20 and C =2.5<br><br>​
tresset_1 [31]

Answer:

50 or 125

Step-by-step explanation:

if u want E=MC then it would be 20 ×2.5=50

OR

if u what to find E=MC² then it would be 20×2.5×2.5 =125

ACCORDING TO ME THIS SHOULD BE THE ANSWER, BUT NOT QUITE SURE ABOUT THIS.

8 0
3 years ago
Read 2 more answers
Other questions:
  • What is the answer to this math problem can someone help me out?!!!!???
    15·2 answers
  • Calculate the power needed to raise 32lb. A distance of 12 feet in 4 seconds
    7·2 answers
  • Let f(x) = x + 8 and g(x) = x2 − 6x − 7. Find f(g(2)). (1 point)
    11·1 answer
  • What is the intercepts for these ?
    9·1 answer
  • Jack’s dog has a rectangular pen.The length is 2 feet longer than the width. The width is 6 feet. What is the distance around th
    7·2 answers
  • Square Root of 100 minus square root of 9
    13·2 answers
  • My father bought a house in $50,000. Price of the house increase
    15·1 answer
  • True or False: (1, 3) is a solution to the system of linear equations shown
    9·2 answers
  • Really confused on this.
    12·2 answers
  • Simplify the expression by combining like terms.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!