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
Olin [163]
3 years ago
8

Simplify by combining like terms: -4x - 2y - 7x - 8y

Mathematics
1 answer:
Sav [38]3 years ago
3 0

Step-by-step explanation:

Solving like terms

-4x - 7x - 2y -8y

-11x - 10y

You might be interested in
Solve 5x = 2 written a afrction inits simplest form
Elden [556K]

Answer:

x = 2/5

General Formulas and Concepts:

Order of Operations: BPEMDAS

Step-by-step explanation:

<u>Step 1: Write equation</u>

5x = 2

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Divide both sides by 5:          x = 2/5

<u>Step 3: Check</u>

<em>Plug in x to verify it's a solution</em>.

  1. Substitute:                    5(2/5) = 2
  2. Multiply:                        10/5 = 2
  3. Divide:                           2 = 2
4 0
3 years ago
Statistics help please!!!
Andre45 [30]

Answer:

see i have posted my pic

Step-by-step explanation:

please mark me as brainliest

8 0
3 years ago
Prove the following DeMorgan's laws: if LaTeX: XX, LaTeX: AA and LaTeX: BB are sets and LaTeX: \{A_i: i\in I\} {Ai:i∈I} is a fam
MariettaO [177]
  • X-(A\cup B)=(X-A)\cap(X-B)

I'll assume the usual definition of set difference, X-A=\{x\in X,x\not\in A\}.

Let x\in X-(A\cup B). Then x\in X and x\not\in(A\cup B). If x\not\in(A\cup B), then x\not\in A and x\not\in B. This means x\in X,x\not\in A and x\in X,x\not\in B, so it follows that x\in(X-A)\cap(X-B). Hence X-(A\cup B)\subset(X-A)\cap(X-B).

Now let x\in(X-A)\cap(X-B). Then x\in X-A and x\in X-B. By definition of set difference, x\in X,x\not\in A and x\in X,x\not\in B. Since x\not A,x\not\in B, we have x\not\in(A\cup B), and so x\in X-(A\cup B). Hence (X-A)\cap(X-B)\subset X-(A\cup B).

The two sets are subsets of one another, so they must be equal.

  • X-\left(\bigcup\limits_{i\in I}A_i\right)=\bigcap\limits_{i\in I}(X-A_i)

The proof of this is the same as above, you just have to indicate that membership, of lack thereof, holds for all indices i\in I.

Proof of one direction for example:

Let x\in X-\left(\bigcup\limits_{i\in I}A_i\right). Then x\in X and x\not\in\bigcup\limits_{i\in I}A_i, which in turn means x\not\in A_i for all i\in I. This means x\in X,x\not\in A_{i_1}, and x\in X,x\not\in A_{i_2}, and so on, where \{i_1,i_2,\ldots\}\subset I, for all i\in I. This means x\in X-A_{i_1}, and x\in X-A_{i_2}, and so on, so x\in\bigcap\limits_{i\in I}(X-A_i). Hence X-\left(\bigcup\limits_{i\in I}A_i\right)\subset\bigcap\limits_{i\in I}(X-A_i).

4 0
3 years ago
Jim ran 200 meters in 30.4 seconds. Mac ran 100 meters in 30.4 seconds. Who ran faster?
Andrews [41]

the second option is the answer

8 0
3 years ago
Read 2 more answers
Write an equation perpendicular to y=1/5 x+9 that passes through the point (-2,-2)
Mamont248 [21]

Answer:

-2= 1/5x-2 +9

-2= -0.4 +9

Step-by-step explanation:

4 0
2 years ago
Other questions:
  • Evaluate √16-x when x=8.
    11·1 answer
  • Select the graph of the solution. Click until the correct graph appears.<br><br> |x| &gt; 5
    7·2 answers
  • Can someone help me with question (b)??
    15·1 answer
  • What is an equivalent expression for 4y plus y
    11·1 answer
  • Ms. hernandez has 100 to spend on parking and admission to the zoo. The park will cost $7 and admission tickets will cost $15.50
    9·1 answer
  • The Golden Gate Bridge in San Francisco is 4200 feet long. The Brooklyn Bridge in New York City is 3/5 as long. How long is the
    5·1 answer
  • The relation R is shown below as a list of ordered
    10·1 answer
  • Can someone please help me with this
    14·2 answers
  • The table below represents the relationship of the amount of snowfall
    11·1 answer
  • Eileen purchased a dishwasher for $750. It depreciates about 0.9% each year. What is the value of the dishwasher after seven yea
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!