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
qaws [65]
3 years ago
15

What is the solution to the above system of equations?

Mathematics
2 answers:
kow [346]3 years ago
8 0

(x , y) = (7, - 1)

2x + 3y = 11 → (1)

3x + 3y = 18 → (2)

subtracting (1) from (2) term by term eliminates the y- term

(3x - 2x) + (3y - 3y) = (18 - 11)

x + 0 = 7 ⇒ x = 7

substitute x = 7 into either of the 2 equations and solve for y

(1) → (2 × 7) + 3y = 11

14 + 3y = 11

subtract 14 from both sides

3y = 11 - 14 = - 3

divide both sides by 3

\frac{- 3}{3} = - 1

solution is (7 , -1)


pentagon [3]3 years ago
8 0

Answer:

the answer is C. (7,-1)

Step-by-step explanation:

You might be interested in
Construct a 95% prediction interval for y given x=-3.5, ^y= 2.097x - .552 and se= .976​
Rasek [7]

Answer:

95% Confidence interval for y

= (-9.804, -5.979)

Lower limit = -9.804

Upper limit = -5.979

Step-by-step explanation:

^y= 2.097x - 0.552

x = -3.5

Standard error = 0.976

Mathematically,

Confidence Interval = (Mean) ± (Margin of error)

Mean = 2.097x - 0.552 = (2.097×-3.5) - 0.552 = - 7.8915

(note that x=-3.5)

Margin of Error is the width of the confidence interval about the mean.

It is given mathematically as,

Margin of Error = (Critical value) × (standard Error of the mean)

Critical value for 95% confidence interval = 1.960

Standard Error of the mean = 0.976

95% Confidence Interval = (Mean) ± [(Critical value) × (standard Error of the mean)]

CI = -7.8915 ± (1.960 × 0.976)

CI = -7.8915 ± 1.91296

95% CI = (-9.80446, -5.97854)

95% Confidence interval for y

= (-9.804, -5.979)

Hope this Helps!!!

3 0
3 years ago
Divide a number by 7, and then subtract 4 from the quotient
Ronch [10]
Y = (x/7) - 4; this would be the equation, assuming x is the number.
3 0
3 years ago
Read 2 more answers
Angel has a bag that contains orange chews, cherry chews, and lime chews. He performs an experiment. Angel randomly removes a ch
Westkost [7]

Answer:

<em>58%</em>

<em>Step-by-step explanation:</em>

<em>Just do 0.576923 times 100% & you should get 57.6923% than round because it says nearest whole number so that's how your answer is 58% :)</em>

4 0
3 years ago
A cube has a side length of 4 feet. What is the volume of the cube?
riadik2000 [5.3K]

Answer:

64 square ft^3

Step-by-step explanation:

If the side lengh is 3 then you would have 4^3 which is 64.

5 0
3 years ago
Read 2 more answers
Pls help im confused D:
Murljashka [212]

Answer:

B is your answer

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • Jay Spring pays $350.00 annually for his health insurance. This is 1/3 of the total cost of the premium; his company pays the re
    9·2 answers
  • Ava and Kelly ran a road race, starting from the same place at the same time. Ava ran at an average speed of 6 miles per hour. K
    7·2 answers
  • Whats the angle measure: cos B= 0.5299
    5·1 answer
  • Which situation can be represented by the expression 3 + (-7) plus, left parenthesis, minus, 7, right parenthesis.
    6·1 answer
  • The heights of the starting players on each of two basketball teams are shown in the table below. Heights of Starters on Team A
    6·2 answers
  • A fire truck is responding to an emergency. It accelerates from 0 to 66 km/hr in 11 seconds. What is its rate of acceleration?
    11·2 answers
  • X (x+2) -x+3(-x-2)-(2x+4)
    8·1 answer
  • Thaddeus shakes his head as he pays $12.37 to the clerk for lunch. Complaining to a friend, Thaddeus says, “Do you realize that
    8·1 answer
  • Allie and Ezra are sitting on flagpoles, throwing beanbags at each other. Allie's flagpole is $35$ feet tall. Ezra's flagpole is
    9·1 answer
  • In a research report, the researcher provides the following information: The seven men were ages 32 to 45 (M
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!