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
alexira [117]
3 years ago
14

(7x-y=7(x+2y=6 estimate the solution to the system of equations ​

Mathematics
1 answer:
jolli1 [7]3 years ago
8 0

Multiply the first equation by 2 to then use elimination by adding the 2 equations.

So, 14x-2y=14

+. x+2y=6

Equals 15x=20 so x=20/15=4/3

Plug in to first equation to get y

7(4/3)-y=7

28/3-y=7

28/3-y=21/3

So y=7/3

Plug both x and y into second equation to check

4/3+2(7/3)=

4/3+14/3=18/3=6 it works

So x=4/3, y=7/3

Hope this helps! Have a blessed day!

You might be interested in
Given the points A (-4,-2) and B (4, 10), find the
mafiozo [28]

Answer:

  P = (2, 7)

Step-by-step explanation:

You want to find coordinates of P on segment AB such that P is 3/4 is of the way from A to B.

<h3>Equation for P</h3>

For some fraction q of the distance from A to B, the point P that lies at that fraction of the distance is given by ...

  P = A +q(B -A) = (1 -q)A +qB

<h3>Application</h3>

For q = 3/4, the location of P is ...

  P = (1 -3/4)A + 3/4B = (A +3B)/4

Using the given point coordinates, we have ...

  P = ((-4, -2) +3(4, 10))/4 = (-4 +12, -2 +30)/4 = (8, 28)/4

  P = (2, 7)

8 0
1 year ago
I NEED HELP ASAP PLEASE!!!!!!
Colt1911 [192]
Use an app on your phone just make sure you pick a gods one it will give you the answer I am not that good at math tho
6 0
3 years ago
Noah manages a buffet at a local restaurant. He charges $10 for the buffet. On average, 16 customers choose the buffet as their
kicyunya [14]

Answer:

$3 max

Step-by-step explanation:

Charge= b, Customer= c, Revenue= r

r= bc, currently, r= 16*10= $160

We know that: b+1 ⇒ c-2  and the target is r ≥ 130

So, this will all be reflected as:

b=10+x ⇒ c= 16-2x

  • (10+x)(16-2x) ≥ 130
  • 160 -20x +16x - 2x² ≥ 130
  • -2x² - 4x + 30 ≥ 0
  • x² + 2x -15 ≤ 0
  • (x+1)² ≤ 4²
  • x+1 ≤ 4 (negative value not considered)
  • x ≤ 3

As we see the max increase amount is $3, when the revenue will be:

(10+3)*(16-3*2)= 13*10= $130

8 0
3 years ago
Weights of golden retriever dogs are normally distributed. Samples of weights of golden retriever​ dogs, each of size nequals​15
FrozenT [24]

Answer:

B.

Step-by-step explanation:

If the population, in this case, weights of golden retriever dogs, follows a normal distribution, then the sample will too, even if the sample size is lower than 30. You only have to worry about the sample size being too small when a problem doesn't explicitly say the distribution from which the samples are drawn is normally distributed.

5 0
3 years ago
Given the arithmetic sequence where a1 = -5 and d = 6, what is a5? Completing these tests is what determines whether or not i gr
Taya2010 [7]
Since the first term is -5 and the difference is 6 so a2=1,a3=7,a4=13,a5=19. Hope that helped. if you have any questions regarding how I got the values, feel free to ask. :')
4 0
3 years ago
Other questions:
  • Jill charges an hourly rate for babysitting one or two children. Kara charges a lower hourly
    9·1 answer
  • 26 is what percent of 49
    11·1 answer
  • What is the reciprocal of 0.125
    13·1 answer
  • Which is the exponential form of log3 x= 11?
    13·1 answer
  • What is the value of x?
    5·2 answers
  • Question 2<br> Salve for then in the measure of are GF
    10·1 answer
  • A)15.8 inches<br> B) 17.8 inches<br> C)16.2 inches<br> D)14.8 inches
    14·1 answer
  • Reduce a)95/75 b) 250/750 to its simplest form
    10·1 answer
  • Lindsay opened a lemonade stand on her street. It costs her $15.00 to buy the supplies each day, and she sells lemonade for $2.0
    12·1 answer
  • Tep 1:
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!