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
dalvyx [7]
3 years ago
15

Is 21x9=9x21 identity

Mathematics
2 answers:
Ymorist [56]3 years ago
8 0
No, it is not because IDENTITY means itself, so the answer has to be the same. 
laila [671]3 years ago
7 0
Nope because it has its own identy like you are your own pearson with your own identy so just think of it that way
You might be interested in
How to solve for y.
NARA [144]
25, 65, and y make a right triangle. use a^2 + b^2 =c^2. 
so...
y^2 + 25^2 = 65^2
y^2 + 625 = 4225 
y^2 = 3600 take the square root of both sides 
y=60 
7 0
3 years ago
I need help with these questions ( see image for question ).<br>Please show working.<br>​
antiseptic1488 [7]

Answer:

  • k = -4 ± 2√5

Step-by-step explanation:

#22

<h3>Given </h3>
  • Equation x² -4x + 1 = k(x - 4) with equal roots
<h3>To find</h3>
  • The value of k
<h3>Solution</h3>

<u>The equation in standard form is:</u>

  • x² -4x + 1 = k(x - 4)
  • x² - 4x - kx + 1 + 4 = 0
  • x² - (k + 4)x + 5 = 0

<u>When the quadratic equation has equal roots its discriminant is zero</u>

  • D = 0
  • b² - 4ac = 0
  • (k + 4)² - 4*5 = 0
  • (k + 4)² = 20
  • k + 4 = ± √20
  • k = - 4 ± √20
  • or
  • k = -4 ± 2√5
5 0
2 years ago
Factor the gcf out of the expression: -6x^3 - 9xy + 18x
Westkost [7]

Answer:

-207xy

Step-by-step explanation:

-6x^3 - 9xy + 18x

-216x -9xy +18x

-225xy + 18x

-207xy

If I'm not mistaken.

6 0
3 years ago
What is 51/7 by 31/9 in simplest form
konstantin123 [22]

Answer:

25,095238095 = 25 2⁄21

Step-by-step explanation:

Just multiply each denominator and numerator straight across and convert to a mixed number, decimal, or whatever you want.

I am joyous to assist you anytime.

3 0
2 years ago
WILL MARK BRAINLIEST! PLEASE HELP!
vodomira [7]

The formula y = mx + b sometimes appears with


different symbols.


For example, instead of x, we could use the


letter C. Instead of y, we could use the letter F.


Then the equation becomes


F = mC + b.


All temperature scales are related by linear


equations. For example, the temperature in


degrees Fahrenheit is a linear function of degrees Celsius.

Water freezes at: 0°C, 32°F


Water Boils at: 100°C, 212°F


Hope this helps!

~ Kana ^^

6 0
3 years ago
Other questions:
  • Differentiating a Logarithmic Function in Exercise, find the derivative of the function. See Examples 1, 2, 3, and 4.
    11·1 answer
  • What angle is included by segments AB and AC
    9·2 answers
  • Which two numbers are not integers?
    6·2 answers
  • I need to find the area below! <br> HELP!
    6·1 answer
  • How do you simplify 19/228
    11·2 answers
  • the solutions to a quadratic question are -6 ans +6. You figure it the original equation and write it in standard form ax2+bx+c=
    5·1 answer
  • Solve. Simplify your answer
    6·1 answer
  • Billy has 2.4 m of ribbon for crafts. He wants to share it evenly with 12 friends. Billy has been making craft projects for seve
    11·1 answer
  • Can you help me with this question plzz?​
    11·1 answer
  • prove that the sum of two consecutive exponents of the number 5 is divisible by 30. If N ia the smaller of two consecutive expon
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!