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
satela [25.4K]
3 years ago
6

Linear combination 3x+2y=-4 4x-y=13 Please give a step by step explanation

Mathematics
1 answer:
Ostrovityanka [42]3 years ago
8 0

when you have a linear combination for example 3x + 2y equals negative 4 you adieu like terms and then multiply

You might be interested in
Which system of equations has the same solution as the system below?
worty [1.4K]

Answer: Both A, and C

Step-by-step explanation:

The answer to the first system of equations (2x+2y=16) would be

x=3 and y=5 ( 3x-y=4 )

Which means we have to find out which of the other equations has an x value of 3, and a y value of 5.

If A is 2x+2y=16, then x=3 and y=5

           6x-2y=8

If B is x+y=16, then x=5 and y=11

         3x-y=4

If C is 2x+2y=16, then x=3 and y=5

           6x-2y=8

If D is 6x+6y=48 , then x=-2 and y=10

            6x+2y=8

Both A and C are equal to the first system of equations, which means they are both correct answers.

8 0
3 years ago
Find the domain of the function. (enter your answer using interval notation.) f(x) = 3x3 − 1 x2 + 2x − 15
Neporo4naja [7]

Hello!

A cubic function is in the form of f(x)=ax^{3}+bx^{2}+cx+d.

All cubic functions have a domain of all real numbers, the range also has a range of all real numbers.

Interval notation is used for representing a function/interval as a pair of numbers. Parentheses and brackets are used to show if the endpoints of a given function/interval are included or excluded. Brackets allow the endpoints to be included while parentheses exclude the endpoint.

Our first instinct would be that the domain is written as [-∞, ∞], but that is incorrect. Infinity is not a number, but it is a concept. This means that they are excluded from the domain.

Therefore, the domain of the function f(x) is (-∞, ∞).

6 0
3 years ago
Consider the following 8 numbers, where one labelled
AlladinOne [14]
<h3>Answers:     x = -17  and   x = 64</h3>

====================================================

Explanation

Consider three scenarios:

  • A) The value of x is the smallest of the set (aka the min)
  • B) The value of x is the largest of the set (aka the max)
  • C) The value of x is neither the min, nor the max. So 8 < x < 39.

These scenarios cover all the possible cases of what x could be. It's either the min, the max, or somewhere in between the min and max.

--------------------

We'll start with scenario A.

If x is the min, then that must mean 39 is the max as it's the largest of the set {18, 36, 16, 39, 27, 8, 34}

The range is 56, so,

range = max - min

56 = 39 - x

56+x= 39

x = 39-56

x = -17  which is one possible answer

--------------------

If instead we go with scenario B, then x is the max and 8 is the min

range = max - min

56 = x - 8

56+8 = x

64 = x

x = 64 is the other possible answer

--------------------

Lastly, let's consider scenario C. If x is not the min or the max, then it's somewhere between the min 8 and max 39. in short, 8 < x < 39.

Note that range = max - min = 39-8 = 31 which is not the range of 56 that we want. So there's no way scenario C can be possible here.

7 0
2 years ago
Find the length of the following tangent segments to the circles centered at O and O's whose radii are 5 and 3 respectively and
natta225 [31]
AB^2=12^2-(5-3)^2&#10;\\AB^2=144-4&#10;\\AB^2=140&#10;\\AB=\sqrt{140}&#10;\\AB \approx 11.83
4 0
3 years ago
4m=n+7 3m+4n +9 =0 ​
Vlada [557]

Answer:

n=-3

m=1

Step-by-step explanation:

get m by itself then plug it in for the other m and solve, then solve for n.

3 0
3 years ago
Other questions:
  • Please help me fast, my teacher never taught me this
    14·1 answer
  • How many diagonals are there in a regular polygon
    8·1 answer
  • I need help with please
    11·2 answers
  • Martin took a total of 20 quizzes over the course of 5 weeks. After attending 15 weeks of school this quarter, how many quizzes
    9·1 answer
  • Please help, this chapter was on derivatives...
    7·1 answer
  • Tuesday, January 5th
    10·1 answer
  • Can you help thanks this is my last one!​
    15·1 answer
  • PLEASE HELP WITH THE PROBLEM ON THE ATTACHED FILE
    12·1 answer
  • 14.62 rounded to the nearest number
    5·1 answer
  • Find the equation of the line
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!