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
IgorC [24]
3 years ago
11

Please help me solve the equation3x+10y=487x+4y=54

Mathematics
2 answers:
agasfer [191]3 years ago
8 0
3x+10y=48
7x+4y=54


multiply the first equation by 2 and the 2nd equation by 5 to remove y
6x+20y=96
35x+20y=270
29x=174
x=6

substitute to any equation
7x+4y=54
42+4y=54
4y=12
y=3

the value of x is 6 and the value of y is 3
ser-zykov [4K]3 years ago
3 0

Answer: x=36/7

               y=9/2

Step-by-step explanation:

1 Solve for yy in 3+10y=483+10y=48.

y=\frac{9}{2}y=

​2

​

​9

​​

2 Substitute y=\frac{9}{2}y=

​2

​

​9

​​  into 7x+4y=547x+4y=54.

7x+18=547x+18=54

3 Solve for xx in 7x+18=547x+18=54.

x=\frac{36}{7}x=

​7

​

​36

​​

4 Therefore,

\begin{aligned}&x=\frac{36}{7}\\&y=\frac{9}{2}\end{aligned}

​

​

​​

​x=

​7

​

​36

​​

​y=

​2

​

​9

​​

​​

You might be interested in
12. The original price of a stove was $480. Its price has since increased by $30. The stove is
Zigmanuir [339]

Answer:

A. $459

Step-by-step explanation:

8 0
3 years ago
Find the area of the shaded region​
Brilliant_brown [7]

Answer:

If you multiply the length and width it's already more than D and b so it's between 41 and 71 , I believe it's 71 though

4 0
2 years ago
If you are given the graph of a line and are asked to write the equation of a perpendicular line, does it matter what the y-inte
kogti [31]
Yes because the y intercept would be a different value for the new equation unless it is zero
5 0
3 years ago
Which of the following is a reason people sometimes use mean or median to misrepresent the “average” of a set of data?
PIT_PIT [208]
The answer to this question is option D(<span>In data sets with outliers, either the mean or median can be used to make the data set appear more favorable to their agenda</span>
8 0
2 years ago
Read 2 more answers
3) A local school district has 4512 students this year. The student population is declining by 2.5% per year. How many students
il63 [147K]

Answer:

Number of students(n1)= 4,402

Step-by-step explanation:

Giving the following information:

Number of students= 4,512

Declining rate= 2.5%

<u>To calculate the number of students next year, we need to use the following formula:</u>

Number of students (n+x)= number of students (n0) / [(1+declining rate)^(n+x)

x= number of years

Number of students(n1)= 4,512/1.025

Number of students(n1)= 4,402

5 0
3 years ago
Other questions:
  • Logs are stacked in a pile with 74 logs on the bottom row and 6 on the top row. Each row has four more logs than the row above i
    11·1 answer
  • If sally has 566 books but has 5 box’s how many books goes into each box?
    14·2 answers
  • A triangle has sides of 2 inches and 7 inches which is a possible lenght,in inches of the third side of the triangle
    14·1 answer
  • A car can travel 21 miles for each gallon of gas it uses. how many miles can the car travel using 51 gallons
    6·1 answer
  • What is x? x – 15 = 40
    11·2 answers
  • Write 2^100 as an exponent with a base of: 32
    14·1 answer
  • Line AB contains points A (-2, 3) and B (4, 5). Line AB has a slope that is
    10·2 answers
  • Given isosceles triangle ABC with AB = BC. If angle A= 2x + 10 and angle B = 6 - 20, then angle C = ?
    7·1 answer
  • Enter the coordinates of a point that is 5 units from (-2, -1). The coordinates of a point 5 units away is (-2, ).
    14·1 answer
  • Expand this question ...
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!