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
kondor19780726 [428]
3 years ago
12

For the following system, use the second equation to make a substitution for y in the first equation.

Mathematics
1 answer:
Tju [1.3M]3 years ago
3 0
3x+y=2
y+4=3x

3x+3x-4=2
6x=6
x=1
You might be interested in
The results of the math exam showed that three eighths of the students made an “A” and one third of them made a “B”. In total, h
grigory [225]

Answer:

b the answer is b

Step-by-step explanation:

idk what they mean but i got an 100 and i had this questin so a

3 0
3 years ago
The sum of two numbers is thirteen, and the sum of<br> their squares is 89. Find the two number
Murljashka [212]

Answer:

Suppose~that~the~two~numbers~are~x~and~y.\\According~to~question,\\Sum~of~the~numbers = 13\\or, x+y=13........(1)\\or, y = 13-x.......(2)\\Again,\\Sum~of~their~squares=89\\or, x^2+y^2=89\\or, (x+y)^2-2xy=89\\From~eq^n(1)~and~(2),\\13^2-2x(13-x)=89\\or, 169-26x+2x^2=89\\or, 2x^2-26x+169-89=0\\or, 2x^2-26x+80=0\\or, x^2-13x+40=0\\or, x^2-8x-5x+40=0\\or, x(x-8)-5(x-8)=0\\or, (x-5)(x-8)=0\\i.e. x=5~or~8\\When~x=5,~y=13-x=13-5=8\\When~x=8,~y=13-x=13-8=5\\So,~the~two~numbers~are~5~and~8.

8 0
3 years ago
What is 12.496 rounded to a whole number. what is 2.90 rounded to a whole number
otez555 [7]
A whole number is a number that is whole as in 1,2,3,4,etc, they don’t have decimals. To find the whole number for these questions you must look at the places (hundreds, thousands, ten thousands.) I was always told a trick which is 4 or less let it rest, 5 or more let it sore. (Basically if it’s less than 4 then decrease it, if it’s higher than increase it.)

12.496 = 13
2.90 = 3

Your answers are 13 and 3.
7 0
3 years ago
Read 2 more answers
The sum of the polynomials 6x3 + 8x2 – 2x + 4 and 10x3 + x2 + 11x + 9 is
faltersainse [42]

Answer:

16x^2 + 9x^2 + 9x + 13.

Step-by-step explanation:

6x^3 + 8x^2 – 2x + 4 +10x^3 + x^2 + 11x + 9

Bringing like terms together:

= 6x^3 + 10x^3 + 8x^2 + x^2 - 2x + 11x + 4 + 9

= 16x^2 + 9x^2 + 9x + 13.  (answer).

4 0
3 years ago
Final height of the rectangle picture of pharmacy area is 391 ft2.
ozzi

Answer:The height of the pharmacy area is 17 feet

Step-by-step explanation:

The formula for determining the area of a rectangle is expressed as

Area = length × width

The pharmacy area is rectangular. The height of the pharmacy area becomes the width of the rectangle.

The area of the pharmacy area is given as 391 ft^2

The length of the pharmacy area is given 23 feet

Therefore

23 × h = 391

h = 391/23 = 17 feet

6 0
3 years ago
Other questions:
  • Which one is a quadratic function
    14·1 answer
  • Jon and Becky measured the circle-shaped part of a sun they drew on the sidewalk.
    10·1 answer
  • What is point-slope form? When can you use point-slope form? How is it useful?
    10·1 answer
  • GEOMETRY How do I do these questions? #6,7,8. Please help thanks!!
    5·1 answer
  • A right-angled triangle has sides of lengths (x + 5) cm, (x - 3) cm and 9 cm.
    14·1 answer
  • The Cumulative number (in thousands) of deaths from a certain disease from 2000 to 2010 may be modeled by A=2.39x2+5.04x+5.1, wh
    13·1 answer
  • Determine the Unit Rate.
    11·2 answers
  • What shape is this ​
    8·1 answer
  • Select the correct answer.<br><br> What is the value of x in the triangle?
    9·1 answer
  • Can someone please help me
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!