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
Alinara [238K]
3 years ago
15

Identify the number of solutions to 3x + 21 = 3(x + 7).

Mathematics
2 answers:
chubhunter [2.5K]3 years ago
7 0
3x + 21 = 3(x + 7)
so what you do first is distribute on the left side (meaning you multiply everything in the parentheses by the number on the outside: in this case 3)
so: 3x + 21 = 3x + 21
now when it looks like this ☝️ (the same variables and the same coefficient) you can tell it’s all real numbers or infinitely many although you can continue to subtract 3x from each side to get: 21 = 21 (since it’s true it’s all real numbers / infinitely many)
hope this helps :)
ozzi3 years ago
5 0

Answer:

0

Step-by-step explanation:

3x+21=3(x+7)

3x+21=3x+21

3x-3x=21-21

0x=0

x=0

You might be interested in
Marking brainliest
Ede4ka [16]

36%

Hope this is right im only 11  :)

8 0
4 years ago
Maya spend 40% of her savings to pay for a bicycle that cost her $85. How much money was in Maya's savings to begin with?
notka56 [123]

Step-by-step explanation:

letπ be the percentage of her savings

=40+85

=125

=125+π=100

=π=100-125

=π=75

6 0
3 years ago
Read 2 more answers
What does the function f (14) = 11 mean
Alex_Xolod [135]

Answer:

In general, when y = f(x), you are substituting a permissible x value into function f & its calculated 'output' is the value for y. Then (x,y) is an ordered pair, i.e. coordinates of a point on the graph. ... So our ordered pair is (-14,11).

5 0
3 years ago
(-2x-8) (-3x² + 4x+5)
marissa [1.9K]

Answer:6x^3+16x^2-42x-40

Step-by-step explanation:

To expand

(-2x-8)(-3x^2+4x+5)

6x^3-8x^2-10x+24x^2-32x-40

Collect like terms

6x^3-8x^2+24x^2-10x-32x-40

6x^3+16x^2-42x-40

3 0
3 years ago
- 3+ 8(2 - 12r) <br>how do you solve this problem​
pochemuha
Answer: -96r + 13

1. distribute 8x2 - 8x12r
-3+8(2-12r)
-3+16-96r

2. add constants -3+16
-3+16-96r
13-96r

3. standard form
-96r + 13
6 0
3 years ago
Other questions:
  • What is the area of a general quadrilateral
    6·2 answers
  • At each stop, you get a snack. Stop 1 you spent a total of $12.50 and gave the cashier $15. How much change did you receive back
    6·2 answers
  • 128 POINTS IF YOU HELP
    9·2 answers
  • Connie asked the students in a study group "how old are you?" each of them answered 12. is this a statistical question?
    12·1 answer
  • 22. 8 points and brainliest answer
    12·1 answer
  • Please help me!!!
    12·2 answers
  • What is the volume of a shoe box that is 15 x 10 x 8 inches?
    11·1 answer
  • The sum of the cubes of 3 numbers which are in the ratio 1:2:3 is 7776. Find the numbers
    8·1 answer
  • Find the HCF and LCM of 4x^2 - 36 ,2x^2 - 12x + 18 and 2x^2 + x - 21​
    10·1 answer
  • Some of the dimensions of a square pyramid are shown in the diagram. The height of the pyramid is 7.5 meters. square pyramid Wha
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!