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stellarik [79]
3 years ago
12

Solve the system of equations algebraically by using substitution method:

Mathematics
1 answer:
vredina [299]3 years ago
3 0

Answer:

This system has infinite solutions and it would be much easier to solve it by elimination but substitution it is.

Step-by-step explanation:

-3x+3y=9

-x+y=3

Isolate either x or y in any of the equations. I'll go with the second.

y = 3+x

Now substitute this for y in the first equation.

-3x+3(3+x)=9

Distribute the 3

-3x+9+3x=9

Combine like terms:

9=9

0=0

It's infinite

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What is the best approximation of the area of a circle with a diameter of 17 meters​
Nookie1986 [14]

Answer:

Step-by-step explanation:

6 0
3 years ago
If g(x) = -3x + 12, what is the solution set<br> if the domain of gis (-2, 0,2}?
disa [49]

Given:

The function is

g(x)=-3x+12

Consider the given domain of g is {-2,0,2}.

To find:

The solution set  if the domain of g for the given domain.

Solution:

Domain is the set of input values and range is the set of output value.

We have,

g(x)=-3x+12

Domain of g is {-2,0,2}.

For x=-2,

g(-2)=-3(-2)+12

g(-2)=6+12

g(-2)=18

For x=0,

g(0)=-3(0)+12

g(0)=0+12

g(0)=12

For x=2,

g(2)=-3(2)+12

g(2)=-6+12

g(2)=6

Now, the solution set  of the given domain of g is

\{f(-2),f(0),f(2)\}=\{18,12,6\}

Therefore, the solution set is {18,12,6}.

4 0
3 years ago
Find the other endpoint of the line segment with the given endpoint and midpoint.
Vlad1618 [11]

Answer:

(19,-14)

Step-by-step explanation:

let endpoint 2 be x2,y2

then apply mid point formula

x=(x1+x2)/2

y=(y1+y2)/2

6 0
3 years ago
Represent each of the following variables in the appropriate letters.Next determine wether the variable has a fixed value or a c
Alex777 [14]

Step-by-step explanation:

a) Let 'm' represents score in a Mathematics test. The variable has a fixed value because the marks Sarah obtained in her test will not change

b) Let 'd' represent the distance between the Zen house and the school. The variable has a fixed value because by using the same route, the distance will always remain constant.

c) Let 't' represent the temperature on the summit of Mount Everest. The variable has a changed value because the temperature may alter depending on the time of day and also climatic conditions which will affect the temperature.

6 0
3 years ago
!!!!!!!50 points!!!!!!!! QUESTION BELLOW HELP ASAP!!!!!!!!!
kirza4 [7]
Hmm, interesting
one way would be to multply it out or set it equal to 11x where x is a whole number (if x is not a whole number, then it is not divisible)
11x=7^6+7^5-7^4
undistribute 7^4
11x=(7^4)(7^2+7^1-1)
11x=(7^4)(49+7-1)
11x=(7^4)(55)

56=5*11

11x=(7^4)(5)(11)
divide by 11
x=5(7^4)



aka, find if 11 is a factor of that number


x=5(7^4)
4 0
3 years ago
Read 2 more answers
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