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
emmasim [6.3K]
2 years ago
10

5. 2x+y=8 ly=X-7 plz help plzzz​

Mathematics
2 answers:
ELEN [110]2 years ago
6 0

Answer:

x=5,y=-2 or (5,-2)

Step-by-step explanation:

Here is the system of equations:

2x+y=8

y=x-7

Since we have y isolated by itself in the second equation, let's use substitution.

Substitute x-7 as y into the first equation

2x+x-7=8

combine like terms

3x-7=8

add 7 to both sides

3x=15

divide by 3

x=5

now substitute 5 as x into one of the equations to find the value of y

for example let's use y=x-7

y=5-7

y=-2

so x=5, y=-2

as a point it's (5,-2)

Hope this helps! :)

Grace [21]2 years ago
5 0

Answer:

x=5 y=-2 (5,-2)

Step-by-step explanation:

2x+x-7+8

3x-7=8

3x=15

x=5

for y

y=-2x+8

y=-2(5)+8

y=-10=8

y=-2

You might be interested in
Question 3 (2 marks)
Sav [38]

Answer:

$3385 per week

Step-by-step explanation:

so, he gets $370 plus 4.5% of what he is selling.

$67000 = 100% of selling

1% = 100%/100 = 67000/100 = $670

4.5% = 1% × 4.5 = 670 × 4.5 = $3015

so, he gets $370 + $3015 = $3385 per week

7 0
2 years ago
Solve for x: -3x + 3 &lt; 6<br> x&gt;-1<br> x&lt;-1<br> x&lt;-3<br> x&gt;-3
Triss [41]

Answer:

D is the correct answer

Step-by-step explanation:

first you subtract the 3 from the left side and add it to the right side. then you divide both side by negative 3 and flip the less than sign to a greater than sign

5 0
3 years ago
Just need the last row !
fgiga [73]

Answer:

I am so confused Sorry need points.

Step-by-step explanation:

4 0
3 years ago
Solve -4x^2 + 6x - 10 = 0 using the quadratic formula. Show each step.
Musya8 [376]
-12x-10=0 since the X can't combine with non X numbers
5 0
3 years ago
The hypotenuse of the right triangle ABC shown below is 17 feet long. The cosine of angle C is 35. How many feet long is the seg
Ket [755]
Diagram missing.

Question interpreted as:
ABC is a right triangle right angled at A.
BC=17 feet
angle C = 35 degrees.

AC=BCcos(35)=17*0.8192=13.93 feet to the nearest 1/100th of a foot.
7 0
3 years ago
Other questions:
  • Help me please. 4x=3y-7:y=4,5,6
    7·1 answer
  • Which of the following sequences is an arithmetic sequence? 1, 2, 4, 8, 18, ... 10, 12, 14, 16, 18, ... 200, 100, 50, 25, ... 4,
    14·1 answer
  • s the data set “types of fruit at the grocery store” qualitative or quantitative? If it is quantitative, is it discrete or conti
    12·2 answers
  • How do i solve this question
    5·1 answer
  • Please hellllpppp really appreciated
    9·1 answer
  • What are the dimensions of the quilt pattern of 7 1/2 and 2/3
    9·1 answer
  • I need an answer right now
    9·1 answer
  • NEED SOMEONE WITH BIG BRAINS
    6·1 answer
  • Please help i dont understand
    7·1 answer
  • Can someone help me with this question? Plzz don’t guess if you don’t know. Ty!
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!