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
butalik [34]
2 years ago
8

2x + y = 15 x + y = 10​

Mathematics
1 answer:
Artyom0805 [142]2 years ago
3 0

Answer:

2x+y=15x+y=10

Consider the first equation. Subtract 15x from both sides.

2x+y−15x=y

Combine 2x and −15x to get −13x.

−13x+y=y

Subtract y from both sides.

−13x+y−y=0

Combine y and −y to get 0.

−13x=0

Divide both sides by −13. Zero divided by any non-zero number gives zero.

x=0

Consider the second equation. Insert the known values of variables into the equation.

15×0+y=10

Multiply 15 and 0 to get 0.

0+y=10

Anything plus zero gives itself.

You might be interested in
Which of the following rational numbers is equivalent to a terminating decimal?
anygoal [31]
A is the correct answer. When put into calculator, the decimals ends.
7 0
2 years ago
Una vajilla consta de 24 platos llanos, 12 platos hondos, 12 platos pequeños y 3 fuentes. Cual sera el precio de la vajilla si l
levacccp [35]

ummm do you know how to say it in englishh,imight be able to halpo if you dooo

4 0
3 years ago
Help me please I need this done quick
Anna11 [10]
Answer:
1058.4 in^2

Step-by-step explanation:
Find the surface areas of the rectangular prism and the triangular prisms separately.
Triangular: S = (1/2)lP+B, where l is slant height, P perimeter, and B base area.
14(4)= 56 perimeter of base
13 slant height
B = 14x14 = 196
put together:
S = (1/2)(13 x 56) + 196
S = 560 in^2

Now the rectangular prism
S = 2lw + 2lh + 2wh, where l is length, h height, w width. (delete the first 2lw since they share one side/they're combined shapes.
S = 2(14x8.9) + 2(14x8.9)
S = 498.4 in^2

Add them together: 498.4 + 560 = 1058.4 in^2
7 0
2 years ago
Solve the system of equations.<br> <img src="https://tex.z-dn.net/?f=%5Cleft%20%5C%7B%20%7B%7By%3D220x-160%7D%20%5Catop%20%7By%3
Leni [432]

\begin{cases} y=220x-160\\ y=20x^2-400 \end{cases}\qquad \qquad \stackrel{\textit{substituting on the 2nd equation}}{\stackrel{\textit{\Large y}}{220x-160}~~ = ~~20x^2-400} \\\\\\ -160=20x^2-220x-400\implies 0=20x^2-220x-240 \\\\\\ 0=20(x^2-11x-12)\implies 0=x^2-11x-12 \\\\\\ 0=(x-12)(x+1)\implies x= \begin{cases} 12\\ -1 \end{cases}

\dotfill\\\\ x=12\qquad \qquad \stackrel{\textit{substituting on the 1st equation}}{y=220(12)-160}\implies y=2480 \\\\\\ x=-1\qquad \qquad \stackrel{\textit{substituting on the 1st equation}}{y=220(-1)-160}\implies y=-380 \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill (12~~,~~2480)\qquad (-1~~,~~-380)~\hfill

4 0
2 years ago
Alex purchased a 6-hour calling card. He has used t minutes of access time. Wrote an algebraic expression to represent how many
Vadim26 [7]
T= Mins
1 hour = 60 mins 
60 x 6 = 360
360 - T = x 
X= How many minutes he has remaining
4 0
3 years ago
Read 2 more answers
Other questions:
  • Three times the sum of a number and seven is two less than five times the number
    8·1 answer
  • Student made five tetrahedrons, a three dimensional figure with four triangular faces and labeled the faces 1-4. use an equation
    11·2 answers
  • 1. Over the next two days, Clinton Employment Agency is interviewing clients who wish to find jobs. On the first day, the agency
    12·1 answer
  • Now group the terms in the expression in part c using the associative property
    12·1 answer
  • Consider f(x) = mx + b where m and b are both non-zero constants. The function g(x) is the inverse of f(x). Which of the followi
    13·2 answers
  • How much is 85cm longer than 1m ?
    5·2 answers
  • Reggie can line a football field in 120 minutes. Rosalinda can line a football field in 80 minutes. If they work together, how m
    6·2 answers
  • When the polynomial is written in standard form, what are the values of the leading coefficient and the constant? 5x + 2 - 3x^2
    13·1 answer
  • Can someone help me i am stuck on my quetsion
    7·1 answer
  • The points (3, 10) and (0, 3) fall on a particular line. What is its equation in slope- intercept form? ) Write your answer usin
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!