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
Alexxx [7]
3 years ago
13

What is solution 7x+5y=-24 and 4x+y=42?

Mathematics
2 answers:
LenKa [72]3 years ago
6 0
7x+5y=-24 (1)
   4x+y=42 (2)

multiply equation (2) by 5 to get
20x+5y=210 (3)

then calculate (3)-(2) which gives you
13x=234 hence x=18
then substitute for x in either equation to get y=-30
iren [92.7K]3 years ago
5 0
{ 7x + 5y = - 24
{ 4x + y = 42    ⇒  y = 42 - 4x

7x + 5y = - 24
7x + 5.( 42 - 4x ) = - 24
7x + 210 - 20x = - 24
7x - 20x = - 24 - 210
- 13x = - 234 .(-1)
  13x = 234
   x = <u>234</u>
          13
   x = 18

4x + y = 42
4.(18) + y = 42
72 + y = 42
y = 42 - 72
y = - 30

S = { 18 , - 30 }
You might be interested in
A hudson valley farmer has 26 employees.He pays each employee $410 per week.After paying his workers for one week,the farmer has
Sliva [168]

Hi there!

A valley farmer has 26 employees and he pays each of them $410 per week.

After paying them for one week he has $162 dollars left. We need to find how much money he had at first.

So the first step is to multiply $410 on 26 since he gives 410 dollars to each employee, which he has 26.

$410 · 26 = $10,660

So he had $10,660 before he paid the workers, but he still had $162 left. To find out his overall total of money he had we need to add $10,660 and $162 which will be $10,822.

The farmer had $10,822

Hope this helped!~

4 0
3 years ago
Unghiurile AOB si BOC sunt adiacente suplementare iar OM si ON sunt bisectoarele lor. Calculati masura unghiului MON, pentru fie
iragen [17]

Answer:

AOB+BOC=180 grade

=>AOB=80 grade

MOB=40 grade

BON=50 grade

=>MON=90 grade

Step-by-step explanation:

answered

7 0
4 years ago
Read 2 more answers
ILL GIVE BRAINLIEST TO WHOEVER ANSWERS
Butoxors [25]
A is your answer

Cost = $5 for the burger and 0.3n is the cost of toppings
4 0
3 years ago
Read 2 more answers
An architect makes a scale drawing of a building. She uses the scale shown. 1 centimeter = 3 meters The length of the building i
Evgen [1.6K]
Ok you would have to multiply the 11 by 3 then you should get your answer of 33m.
8 0
3 years ago
Alice has $15 more than Barry. Charlene has only 2 times of the amount of Barry's money. If Alice has x dollars, how much money
natima [27]
X=alice
b=barry
c=charlene

x=15 more than b
x=15+b

c=2 times of b
c=2b

all together
x+c+b
15+b+2b+b
15+4b
they have 15+4b or 15+4 times of barry
if we want in terms of x
x=15+b
x-15=b

15+4(b)
15+4(x-15)
15+4x-60
4x-45

they have 4x-45 together
5 0
3 years ago
Other questions:
  • The vertex of this parabola is at (-2,-3). When the y-value is -2 the x-value is -5. What is the coefficient of the square term
    15·1 answer
  • Use the factor theorem to determine which expression is a factor of the following polynomial
    9·1 answer
  • Find the area of the parking space if the height is 18 feet in the base is 9 1/4 feet
    14·1 answer
  • (1,3) and (3,4) = what is the answer
    12·1 answer
  • How do you solve this equation <br> -91=-7(n+6)
    6·2 answers
  • PLEASE HELP Me<br> Thank u!!
    14·1 answer
  • What is the minimum value for g(x)=x^2−10x+16?
    7·1 answer
  • The jacket I want cost $85, but I have a coupon for 15% off. How much would I pay for the jacket with my coupon?
    12·2 answers
  • WILL GIVE BRAINLIEST IF YOU HELP ME
    7·2 answers
  • Please help me out! determine the domain on this graph
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!