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
Fantom [35]
2 years ago
12

Use complete sentences to explain in detail how you would use the substitution method to solve the following system of equations

:
x = 4y

x + 2y = 12

Your description should include:

-how to find x

-how to find y

-the answer to the system
Mathematics
1 answer:
-BARSIC- [3]2 years ago
5 0
If we now that 4y equals to x, that means we can replace x with 4y.

Therefore we can write: 4y+2y = 12
We can summarize that to 6y = 12.
If we divide both sides with 6, you get y = 2

In order to solve for x, we can use the second equation and just replace y with value we just got (y=2).

We can write: x+2*2=12
Now you move 2*2 (which is 4) to the other side: x=12-4
Now you get: x = 8
You might be interested in
Para cambiar 212% a fracción debemos dividirlo entre 100% ?
kirza4 [7]

 Si tiene que divide 212/100=53/25

4 0
3 years ago
Coefficiants of (2x+y)^4​
sattari [20]

By the binomial theorem,

(2x+y)^4=\displaystyle\sum_{k=0}^4\binom 4k(2x)^{4-k}y^k=\sum_{k=0}^4\binom 4k2^{4-k}x^{4-k}y^k

where

\dbinom nk=\dfrac{n!}{k!(n-k)!}

Then the coefficients of the x^{4-k}y^k terms in the expansion are, in order from k=0 to k=4,

\dbinom 402^{4-0}=1\cdot2^4=16

\dbinom412^{4-1}=4\cdot2^3=32

\dbinom422^{4-2}=6\cdot2^2=24

\dbinom432^{4-3}=4\cdot2^1=8

\dbinom442^{4-4}=1\cdot2^0=1

3 0
3 years ago
1<br>Prove that<br>1: sin/1-cot + cos/1-tan=cos+sin​
Anit [1.1K]

Answer:

have:

\frac{sin}{1-cot}+\frac{cos}{1-tan}\\\\=\frac{sin}{1-\frac{cos}{sin} }+\frac{cos}{1-\frac{sin}{cos} }\\\\=\frac{sin^{2} }{sin-cos}+\frac{cos^{2} }{cos-sin} \\\\=\frac{sin^{2} }{sin-cos}-\frac{cos^{2} }{cos-sin}\\\\=\frac{sin^{2}-cos^{2}  }{sin - cos}\\\\=\frac{(sin-cos)(sin+cos)}{sin-cos}\\\\=sin+cos

Step-by-step explanation:

4 0
3 years ago
Conver the equation y=2 to polar form. Then solve the resulting equation for r. <br> Thanks :)
maksim [4K]
This is something to memorize

y = r*sin(theta)

so if y = 2, then 

2 = r*sin(theta)

Divide both sides by sin(theta) to get

r = 2/sin(theta)
r = 2csc(theta)
8 0
3 years ago
This is the last question plz help
kolezko [41]

Answer:

Skewed right as the values decrease to the right.

4 0
3 years ago
Other questions:
  • How many positive two-digit integers are factors of both 100 and 150?
    9·1 answer
  • 0.3 is equivalent to 3/100
    5·1 answer
  • X^2-12x+36=0
    15·2 answers
  • Simplify the expression.<br> -1/2 (-5/6 + 1/3)
    6·1 answer
  • 3/4x=-18 what is the answer?
    6·1 answer
  • What is the median of this data set?
    12·1 answer
  • Which model shows 1/4 divided by 3 ? A B C D
    7·1 answer
  • Last winter Armand had StartFraction 5 Over 6 EndFraction of a row of stacked logs. At the end of the winter, he had StartFracti
    13·2 answers
  • There are 11 cookies in a jar, as listed below. The cookies are all the same size and shape.
    13·1 answer
  • Please look at the attachment and answer my question :(
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!