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defon
3 years ago
15

A______ is a value, usually in the form of a letter or symbol, that can change or that represents an unknown quantity.

Mathematics
1 answer:
julia-pushkina [17]3 years ago
8 0

Answer:

Variable

Step-by-step explanation:

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Table show step by step how do you simplify the algebraic expression 3(x-5)+4x. <br>Justify step 4​
ale4655 [162]
<h3>Answer: Commutative Property (choice C)</h3>

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

Explanation:

Here are all of the justifications for each step

  • Step 1. None needed. This is the original expression
  • Step 2. Distributive property
  • Step 3. Multiply  (the 3 and 5 multiply to 15)
  • Step 4. Commutative property. Specifically, this is the commutative property of addition which allows us to add any two numbers in any order we want. In this case, the  -15 and 4x terms swap places.
  • Step 5. Associative property. The parenthesis group the first two terms away from the third term.
  • Step 6. Combine like terms. Both 3x and 4x have an x only so they are like terms that combine to 7x. You can think of it as 3+4 = 7, then you just tack an x onto everything to get 3x+4x = 7x.
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3 years ago
A rectangle has a height of 5m^4 and a width of m^2-2m-1.
vovangra [49]

Step-by-step explanation:

Area of rectangle= lw

= 5 {m}^{4}  \times ( {m}^{2}  - 2m - 1) \\  = 5 {m}^{6}  - 10 {m}^{5}   - 5 {m}^{4}  \\

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3 years ago
Question 12 options:
marshall27 [118]

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sdad

Step-by-step explanation:

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3 years ago
I will give BRAINLIEST to whoever answers correctly first!!!
Tatiana [17]
$3.18

Explanation: I am a cashier hahaha
7 0
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Read 2 more answers
Find the coordinates of the midpoint of the segment connecting points (-3,-6) and ( 2,5)
marin [14]
I solved it on paper so it's easier. 

But good luck ! :)

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3 years ago
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