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
vaieri [72.5K]
3 years ago
8

Need help pls solve 7x-4y=-7 5x+y=22

Mathematics
2 answers:
Vinil7 [7]3 years ago
8 0
I think this would be the correct answer <span>{x,y} = {3,7}</span><span> </span><span />
aev [14]3 years ago
3 0
<span>7x-4y=-7
5x+y=22

multiply 4 on the 2nd equation
</span>20x+ 4y=88

now you have
7x -4y = -7 
20x + 4y = 88
--------------------add
27x = 81
x = 3

7x-4y=-7
7(3)-4y=-7
-4y = -28
y = 7

answer (3, 7) is the solution
You might be interested in
What is the decimal for the fraction 22/4
fenix001 [56]

The decimal for this fraction is 5.5

7 0
2 years ago
Read 2 more answers
What is the value of x in the equation <br> -5/8x=-160?
Helen [10]

Answer:

x= 1/256

Step-by-step explanation:

1. multiply both sides by 8x (answer: -5= 8x*-160)

2. divide both sides by -160 (answer: -5/-160 or 1/32 =8x)

3. divide both sides by 8 (answer: 1/256 = x

4. check your answer: -5/(8*1/256)= -160

5 0
3 years ago
Evaluate each expression
solmaris [256]

Answer:

4 * 4 ÷ 4 = 4

8 ÷ (2*2) = 2

Step-by-step explanation:

4 * 4 \div4\\\rule{150}{0.5}\\\text{Use PEMDAS}\\\\4 * 4 \div4\\\\4 * 1\\\\\boxed{4}

==============================

8 \div (2*2)\\\rule{150}{0.5}\\\text{Use PEMDAS}\\\\8 \div (2*2)\\\\8 \div 4\\\\\boxed{2}

I hope this helps.

5 0
2 years ago
A number increased by 5 is two times the number
marin [14]
Let x be the number. x + 5 = 2x. 5 = x because you isolate for x by moving it to the right side, meaning you’d have to subtracts 1 x from 2x
8 0
3 years ago
( The question is on the attachment )
valentina_108 [34]

We can use the slope-intercept form of the equation of a line, y = mx + b, where m is the slope and b is the y-intercept.

From the graph, we see the line crosses the y-axis at y = 15. That means the y-intercept is 15, and we have so far y = mx + 15.

Now we need the slope. On the graph we see that for every 3 units up in y, there is 1 unit to the right in x. The slope is 3/1 = 3. m = 3. Now we add the slope to the equation.

y = 3x + 15

Answer: y = 3x + 15

7 0
2 years ago
Other questions:
  • What is the equation of a circle with center (-7,4) and radius 8?
    8·2 answers
  • The picture shows a barn door what is the distance BC between two horizontal parallel bars?
    12·1 answer
  • Can somebody please help me!!
    9·2 answers
  • What is the value of x?<br><br><br><br> Enter your answer in the box.<br> x =<br> ​​
    13·1 answer
  • The formula for the lateral surface area of a cylinder is S=2πrhS=2πrh , where r is the radius of the bases and h is the height.
    7·2 answers
  • Point G is the center of the small circle. Point X is the center of the large circle. Points G, Y, and X are all on line segment
    13·1 answer
  • Okkkkkkk jjjjjjjjhhhhh
    12·1 answer
  • PLS HELP ME I BEG YOU<br> Pleaseee help me solve this sistem of equations with stepss
    8·1 answer
  • How much do 1.5 pounds of Havarti cheese cost?
    5·2 answers
  • Which represents the inverse of the function f(x) = 4x?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!