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
shtirl [24]
3 years ago
7

Select the property of equality used to arrive at the conclusion If x= 3, then x2 = 3x

Mathematics
1 answer:
Luda [366]3 years ago
4 0

You used the fact that you can multiply both sides of an equality by the same, non-zero constant.

So, if you start with the trivial equality

x=x

you can multiply both sides by 3:

3x=3x

But if x=3, 3x becomes 3\cdot 3, which is 3^2. So, we have

3^2=3\cdot 3

which leads to

x^2=3x

if you recall that x=3

You might be interested in
Last year Mr. Christian‘s class had 30 students .this year the number of students in his class is 150% of the number of students
kow [346]

Answer:

He has 45 kids now.

Step-by-step explanation:

3 0
2 years ago
Plz I need help I really need help
Fynjy0 [20]

Answer:

-1 1/2

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
There are 12 months in a year. Use the drop-down menus to help write the equation that can be used to find the number of months,
stepladder [879]

Answer:

Honestly I don’t know I need help

Step-by-step explanation:

8 0
2 years ago
A train brakes from 40 m/s to a stop in 5 sec. What is the acceleration of the train?
Basile [38]

Answer:

To find the acceleration we have its formula as

v-u/t where v is final velocity, u is initial velocity and t is time

So substituting the values,

0-40/5 m/s²

-40/5 = -8 m/s²

Thus the acceleration is -8m/s²

pls give brainliest for the answer

6 0
3 years ago
Please help i give 15 points for the answer
Paraphin [41]

Answer:

2 and 9/10

Step-by-step explanation:

3 1/2- 3/5=2 9/10

5 0
3 years ago
Read 2 more answers
Other questions:
  • The length of a rectangle is 4 centimeters less than twice it’s width. The perimeter of the rectangle is 34vm. What are the dime
    11·2 answers
  • What does isolate mean in math
    13·2 answers
  • Leo spent the same amount of time working on each of 5 different weight machines and then spent Two-thirds of an hour on the tre
    8·2 answers
  • Help me please! I’m begging
    9·1 answer
  • Solve the system of equations using elimination 2x+y=3 and 3x-y=12
    15·1 answer
  • Ahmed reads for x minutes. Kimaya reads for 4/7
    14·1 answer
  • A juice manufacturing company designed a carton as shown below. What is the name of the three-dimensional
    15·1 answer
  • Find the value of x.
    15·1 answer
  • What is the gradient of the line (-4, 10) to (-2, 6)<br>​
    12·1 answer
  • S is a subset within a universal set, u. If S= {x,y,4,9,?} which could describe u , letters or numbers
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!