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
Lana71 [14]
3 years ago
12

X+y=14

Mathematics
1 answer:
RoseWind [281]3 years ago
5 0

Answer:

x = -18

y = 4

Step-by-step explanation:

x + y = 4

2x + 3y = 30

You can do any math operation to each side of the equal sign as long as you do the same operation to both sides.

change x + y = 4       to        x = 4 - y  

Now substitute (4 - y) into the second equation, in place of x.

2(4-y) + 3y = 30

multiply the 2(4-y) part:

8 -2y + 3y = 30

simplify:

8 + y = 30

subtract 8 from each side:

y = 22

now substitute the value of y back into the first equation to solve for x:

x + 22 = 4

subtract 22 from both sides:

x = -18

Check:

x + y = 4

22 -18 = 4  

4 = 4       (this checks)

2(-18) + 3(22) = 30

-36 + 66 = 30

30 =30     (this checks also)

PS: you could have solved for y first if you had wanted to. The results would be the same.

You might be interested in
ANY SMART PPL OUT THERE? (question about perimeter)
N76 [4]

Answer:

your answers are:

P= 2(l+w) units

P= 2(5)+2(9) units

P=(l+l)+(w+w) units

Step-by-step explanation:

each of these answers portray L two times for each side and W two times for each side which will give you your perimeter.

7 0
3 years ago
assuming that no questions are left unanswered, in how many ways can a six-question quiz with 4-choice multiple choice questions
AfilCa [17]

Given:

Total number of questions = 6

Choice for each question (in MCQ) = 4

Assuming that no questions are left unanswered.

To find:

The total number ways to answer the quiz, assuming that no questions are left unanswered.

Solution:

Here, Number of ways to answer each question = 4

To find the  total number ways to answer 6 MCQ, we have to have to multiply number of ways to answer each question 6 times.

Total number of ways to answer six-question quiz with 4-choice multiple choice questions is

4\times 4\times 4\times 4\times 4\times 4=4096

Therefore, the required number of ways is 4096.

3 0
3 years ago
Which function is linear?
AlexFokin [52]

Answer:

B & C

Step-by-step explanation:

I'm not sure if you can have two answers but both of them are linear. A And D aren't because they have absolute value

6 0
3 years ago
Read 2 more answers
Can anyone help me with this math stuff? I will give you 15 points please help me
denpristay [2]

Answer:

b

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
the grocery store is selling bananas for $0.35 per lb .how much will Zack pay for 3.6 lbs. of bananas?
Paraphin [41]
0.35*3.6=$1.26 Zack will pay $1.26 lbs of bannas
Hope this helped :DD
Download pdf
6 0
3 years ago
Other questions:
  • When a whole number is multiplied by 104, how does the placement of the decimal point change?
    14·1 answer
  • 26,) If y varies inversely as x, and y = 5 as x = 6, find y for the x-value of 10.
    8·2 answers
  • A cylinder has a radius of 2 meters and a height of 10 meters. What is the volume of the cylinder? Cylinder V = Bh 1. Write the
    14·1 answer
  • Solve for x.<br> 2x/x+12=1/2
    9·2 answers
  • What happens when a straight angle is bisected
    14·2 answers
  • Find the area of the parallelogram shown below.<br> 6<br> 5
    15·1 answer
  • HELP ASAP Solve for x. Show or explain your work.
    7·1 answer
  • Helppppppppppppppppppppppppppp
    5·1 answer
  • If the cost of 10 tables is $750. Find the number of tables that can be purchased with $8250.
    5·1 answer
  • Which equation represents this statement?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!