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
tatiyna
3 years ago
7

Which expression would be easier to simplify if you used the commutative property to change the order of the numbers?

Mathematics
1 answer:
Cerrena [4.2K]3 years ago
3 0

Answer: A. 30+(-12)+70

Step-by-step explanation:

Commutative property of addition is given by : a+b = b+a , where a and b can be any expression of real numbers.

It basically changes the order of the so that simplification of any expression becomes easier.

In A. we use this property as

30+(-12)+70 = 30+[(-12)+70]

= 30 + [70+(-12)]  [we switched order of (-12) and 17]

= 30+70-12

= 100-12

= 88

The rest of the expression already arranged accordingly, there is no need to apply commutative property to change the order of the numbers.

So the correct option is A. 30+(-12)+70.

You might be interested in
What is the value of angle C
Juli2301 [7.4K]

Answer:

around 190

Step-by-step explanation:

6 0
2 years ago
Identify which type of sampling is used. The name of each contestant is written on a separate card, the cards are placed in a ba
Alexus [3.1K]

Answer: E simple random

Step-by-step explanation:

A simple random sample in a statistics is a subset of individuals chosen from a larger set. Each individual is chosen randomly and entirely by chance, such that each individual has the same probability

7 0
3 years ago
A set of 8 dessert dishes cost $20. what was the cost of each dish
emmainna [20.7K]
$20 / 8 dessert dishes = $2.50

The cost of each dish is $2.50.
5 0
3 years ago
Read 2 more answers
How do you know when a term is defined or undefined
lord [1]
In geometry, definitions are formed using known words or terms to describe a new word. There are three words in geometry that are not formally defined. These three undefined terms are point, line and plane. 

<span>POINT (an undefined term) </span>
<span>In geometry, a point has no dimension (actual size). Even though we represent a point with a dot, the point has no length, width, or thickness. A point is usually named with a capital letter. In the coordinate plane, a point is named by an ordered pair, (x,y). </span>

<span>LINE (an undefined term) </span>
<span>In geometry, a line has no thickness but its length extends in one dimension and goes on forever in both directions. A line is depicted to be a straight line with two arrowheads indicating that the line extends without end in two directions. A line is named by a single lowercase written letter or by two points on the line with an arrow drawn above them. </span>

<span>PLANE (an undefined term) </span>
<span>In geometry, a plane has no thickness but extends indefinitely in all directions. Planes are usually represented by a shape that looks like a tabletop or wall. Even though the diagram of a plane has edges, you must remember that the plane has no boundaries. A plane is named by a single letter (plane m) or by three non-collinear points (plane ABC). </span>

<span>Undefined terms can be combined to define other terms. Noncollinear points, for example, are points that do not lie on the same line. A line segment is the portion of a line that includes two particular points and all points that lie between them, while a ray is the portion of a line that includes a particular point, called the end point, and all points extending infinitely to one side of the end point. </span>

<span>Defined terms can be combined with each other and with undefined terms to define still more terms. An angle, for example, is a combination of two different rays or line segments that share a single end point. Similarly, a triangle is composed of three noncollinear points and the line segments that lie between them. </span>

<span>Everything else builds on these and adds more information to this base. Those added things include all the theorems and other "defined" terms like parallelogram or acute angle. </span>
5 0
3 years ago
Two shops, Tisco and Azda, sell the same brand of baked beans with the following deals.
andreev551 [17]

Answer:

Azda's price is better

Step-by-step explanation:

Tisco

3 for £1.29

12 for £1.29*4= £5.16

Azda

4 for £1.68

12 for £1.68*3= £5.04

Azda offers better price for 12 items

3 0
3 years ago
Read 2 more answers
Other questions:
  • Plz Help (Not really tho). Maath stuff.
    7·2 answers
  • The water level in a pool drops 4 1/4 inches. What rational number represents a drop of 4 1/4 inches?
    11·2 answers
  • What's the prime factor of 4, + -1? Testing
    5·2 answers
  • Simplify the radical expression: -24√3 + 5√3
    8·2 answers
  • Find the midpoint of the line segment with the given endpoints.<br> (-3,-7) and (3,0)
    5·2 answers
  • A coin is flipped. If a heads is flipped, then the coin is flipped 4 more times and the number of heads flipped is noted; otherw
    11·1 answer
  • What is the value of p(x)=6x^4+2x^3-x+2 at x=0
    6·2 answers
  • A yard of fabric costs $12.99 how much will 2 feet cost
    10·2 answers
  • Find the slope of the line that passes through (4, 7) and (10, 6).
    10·1 answer
  • -3x + 5&lt;-16<br><br> X(type your answer)(type your answer)
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!