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
zepelin [54]
2 years ago
15

Solve the system for order pair 2x+5y=15 5x+10y=35

Mathematics
2 answers:
ella [17]2 years ago
7 0

Answer:

(5, 1).

Step-by-step explanation:

2x+5y=15

5x+10y=35          

Multiply the first equation by -2:

-4x - 10y = -30

Add this 2 second equation:

x = 5.

Plug x = 5 into the first equation:

10 + 5y = 15

5y = 5

y = 1.

Harlamova29_29 [7]2 years ago
5 0

Hi!

If we multiply the top equation by (-2), then we can cancel out the y's.

-2(2x + 5y = 15)

-4x - 10y = -30

Now we add the second equation and our new equation together, and get:

x = 5

Now, we plug this in to one of the other equations

2(5) + 5y = 15

distribute

10 + 5y = 15

subtract 10 from both sides

5y = 5

divide both sides by 5

y = 1

Therefore, your answer is (5, 1)

Have a great day! :D

You might be interested in
Bags of sweets cost £3.75
Pachacha [2.7K]
The answer would be rounded by 7
6 0
3 years ago
The roots of the equation 2x² – 5 = 0 are
Vikentia [17]

Answer:

4

Step-by-step explanation:

x = root under 5/2

so it is real and irrational number

5 0
3 years ago
Pls help solve!!!!!!!!
Svetradugi [14.3K]
Its also 40°30' because the median is also a bisector in isosceles triangle
5 0
3 years ago
Express a decimal number ( ie 0.768) - process description please - as a rational number (96/125)?
Stels [109]

The decimal representation of any number is a linear combination of powers of 10. In other words, given a number like 123.456, we can expand it as

1\cdot10^2+2\cdot10^1+3\cdot10^0+4\cdot10^{-1}+5\cdot10^{-2}+6\cdot10^{-3}

10^{-n}=\dfrac1{10^n} for any n, so the above is the same as

100+20+3+\dfrac4{10}+\dfrac5{100}+\dfrac6{1000}=\dfrac{100000+20000+3000+400+50+6}{1000}=\dfrac{123456}{1000}

Similarly, we can write

0.768=\dfrac{768}{1000}

Now it's a question of reducing the fraction as much as possible. We have \mathrm{gcd}(768,1000)=8 so

\dfrac{768}{1000}=\dfrac{96\cdot8}{125\cdot8}=\dfrac{96}{125}

5 0
3 years ago
Help, please! :(
Mashutka [201]

Answer:

A. The greatest one year increase in tuition ocurred from 1997 to 1998.

Step-by-step explanation:

If you look at the graph, at the points above 1997 and 1998, you'll see that the dots are separated by two lines, not just one.

3 0
2 years ago
Other questions:
  • Help me please thank you!
    7·1 answer
  • If x = 0, then f(0) =
    8·1 answer
  • Help me with question 4. and 5. for 100 points and brainlyest to the first answer
    6·2 answers
  • After the 15% sales tax the jeans were $11.50. How much was the jeans before the sales price?
    14·1 answer
  • Matthew has saved a total of $14,800, of which $3700 is invested in the stock market. What percent of his total savings is inves
    8·1 answer
  • Which of these is NOT a method for proving that a quadrilateral is a parallelogram?A.show that one pair of opposite sides is par
    14·1 answer
  • What value of w is a solution to this equation?<br> w/2 = 6<br> w = 10 or w = 12
    11·2 answers
  • Is the expression below a perfect square?<br> Is so then factor:<br> x^2 - 36
    5·1 answer
  • Anne is trying to model the following sequence (4,-52,676,-8788,114244)
    7·2 answers
  • Round <br> 653<br> ,<br> 500<br> 653,500653, comma, 500 to the nearest thousand.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!