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
dexar [7]
4 years ago
15

Solve each system of equations by substitution. List the ordered pair.

Mathematics
1 answer:
Anit [1.1K]4 years ago
8 0
Y=6x-11
-2x-3y=-7
-2x-3(6x-11)=-7
-2x-18x+66=-7
-20x=-73
x=3.65
y=6(3.65)-11=10.9

y=-3x+5
5x-4y=-3
5x-4(-3x+5)=-3
5x+12x=17
x=1
y=-3(1)+5=2

2x-3y=-1
y=x-1
2x-3(x-1)=-1
-x=-4
x=4
y=4-1=3

-3x-3y=3
y=-5x-17
-3x-3(-5x-17)=3
12x=-48
x=-4
y=-5(-4)-17=3
You might be interested in
1057 263 2960 357 which is not a prime number
JulijaS [17]
1057=7*151
263 is a prime number.
2960=10*296
357=3*7*17
8 0
3 years ago
Write an equation of the line below.
Lubov Fominskaja [6]

Answer (<u>assuming it can be in slope-intercept form)</u>:

y = \frac{4}{5} x

Step-by-step explanation:

1) First, find the slope of the line. Use the slope formula m = \frac{y_2-y_1 }{x_2-x_1} and substitute the x and y values of two points on the line into it. We can see that the line passes through (0,0) and (5,4), so let's use those points for the formula and solve:

m = \frac{4-0}{5-0} \\m = \frac{4}{5}

So, the slope is \frac{4}{5}.

2) Next, identify the y-intercept of the line. The y-intercept is the point at which the line intersects the y-axis. We can see that the line intersects the y-axis at (0,0), so that must be the y-intercept.

3) Now, write the equation of the line in slope-intercept form using the y = mx + b format. The number in place of m represents the slope, so substitute \frac{4}{5} in its place. The number in place of b represents the y-intercept, so substitute 0 in its place. This gives the following answer and equation:

y =\frac{4}{5} x+0\\y = \frac{4}{5} x

4 0
4 years ago
Read 2 more answers
23 and a half divided by 4
kkurt [141]

Answer:

\frac{47}{8}

Step-by-step explanation:

1) Rewrite the words into an equation:

23\frac{1}{2} ÷ 4

2) Change the division sign to a multiplication sign and find the reciprocal of 4 (flip the numerator and denominator of 4):

23\frac{1}{2} * \frac{1}{4}

3) Change the mixed number into an improper fraction:

\frac{47}{2} * \frac{1}{4}

4) Multiply:

\frac{47}{8}

5 0
4 years ago
Giving brainliest to whoever answers this.
hjlf

Answer:

5,1

Step-by-step explanation:

7x + 4y = 39

2x + 4y = 14

since, the 4y same for both equation then we can eliminate the 4y by subtracting the two equation

7x + 4y = 39

2x + 4y = 14

---------------- -

5x + 0 = 25

5x = 25

x = 25/5 = 5

then we can input (subtitute) the value of x into the equation, I choose 2x + 4y = 14

2x + 4y = 14

2(5) + 4y = 14

10 + 4y = 14

4y = 14 - 10

4y = 4

y = 4/4 = 1

or if your teacher ask you to use elimination to find the value of x we can write like this

7x + 4y = 39

2x + 4y = 14

make the coeficient of x in both equation same

7x + 4y = 39 (x2)

2x + 4y = 14 (x7)

so

14x + 8y = 78

14x + 28y = 98

--------------------- -

0 - 20y = -20

-20y = -20

y = (-20)/(-20) = 1 (same answer right)

so the correct answe is

(5,1)

8 0
3 years ago
The number -2.34 can be found between which two integers?<br> (Full question above)
Orlov [11]

Answer:

last option

Step-by-step explanation:

imagine a number line

________________________________________________

-3               -2             -1               0              1               2                3

             |

            -2.34 would be found somewhere over there

7 0
4 years ago
Read 2 more answers
Other questions:
  • Mitchell travels from the US to Canada, where he exchanges 150 US dollars for Canadian dollars. He then spends 20 Canadian dolla
    14·2 answers
  • Use words an pictures to show 95 and 59
    6·1 answer
  • Slope is -3 and (3,5) is on the line , what’s an eqUation in standard form
    13·1 answer
  • 6 pizza was shared equally among a group of children. Each child got 1/9 of a pizza. How many children was in the group?
    5·1 answer
  • I need help with the attachment below. Please explain the work.
    13·1 answer
  • It takes Dan 32 minutes to complete 2 pages of math homework. At this rate, how
    10·2 answers
  • A population of 6000 bacteria is growing at a rate of 6% each day. Write 2 an equation that expresses the number of bacteria at
    8·1 answer
  • Solve the equation !!!!!!!
    11·1 answer
  • Michael owns a lawn care service. He charges each customer 30 + 12h dollars, where h represents the number of hours spent workin
    7·1 answer
  • At a real estate​ agency, an agent sold a house for ​$377,000. The commission rate is 4.5​% for the real estate agency and the c
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!