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
Troyanec [42]
3 years ago
5

Given that (2x-1)(x+5)=2x^2-mx-5, what is the value of m​

Mathematics
1 answer:
aksik [14]3 years ago
3 0
Expand the left side
2x(x + 5) - 1(x + 5) = 2x² - mx - 5
2x² + 10x - x - 5 = 2x² - mx - 5
2x² + 9x - 5 = 2x² - mx - 5
cancel 2x² and -5
9x = - mx


m = -9
sorry i was wrong, my mistake hehe
You might be interested in
HELP PLEASEEEE!! First correct answer gets brainliest ! ​
Bingel [31]
It is not a function did I do good
8 0
3 years ago
Verify the identity: <br> (1-sinx)/cosx = cosx/(1+sinx)
Lisa [10]
For the answer to the question above,
<span>Let's work with the left-hand side 
We're going to times cosx/1-sinx by 1+sinx/1+sinx, you can do this because 1+sinx/1+sinx is equal to 1, so you aren't really changing anything. 

After you've times the top and bottom by 1+sinx, you get: 

cosx(1+sinx) / (1-sinx)(1+sinx) 

The denominator is a difference of squares, so you get 1-sin^2 x 

what you have now is 

cosx(1+sinx) / 1-sin^2x 

You know that 1-sin^2x is equal to cos^2x 

so know you have 

cosx(1+sinx) / cos^2x 

get rid of the cosx on top by simplifying and the cos^2x so that you're left with 

(1+sinx) / cos x 

Therefore cosx / 1- sinx = 1 + sinx / cos x</span>
4 0
3 years ago
Graph for the quadratic formula f(x) = (x - 3) ^2 +5
aksik [14]

Please see the attached graph to see f(x) = (x - 3) ^2 +5 graphed.

6 0
3 years ago
On a coordinate plane, which point lies on the y-axis? A) (6, 6) B) (0, 6) C) (6, 0) D) (6, 6)
bezimeni [28]

Answer:

<h2>B) (0, 6)</h2>

Step-by-step explanation:

If the point lies on the y-axis then the first coordinate of the point is equal 0.

(0, y) - y is any real number.

5 0
2 years ago
Read 2 more answers
I need help with this please:/
ser-zykov [4K]
4.5
pi is about 3.14 and root 23 is about 4.8 - the only number between these values is 4.5
7 0
2 years ago
Read 2 more answers
Other questions:
  • If using the method of completing the square to solve the quadratic equation
    7·1 answer
  • Pls help imma give brainly
    7·1 answer
  • 4. If z/y = x , which of the following statements is true?
    7·1 answer
  • The cost of renting a bicycle, y, for
    15·1 answer
  • What decimal is equivalent to 0.85
    15·1 answer
  • Please look at photo attached :)
    12·2 answers
  • An important factor in selling a residential property is the number of times real estate agents show a home. A sample of 23 home
    5·1 answer
  • A train in Japan can travel 813.5 miles in 5 hours <br><br> Find the unit rate in miles per hour
    7·1 answer
  • Chicken costs $3.40 per pound and beef costs $4.30 per pound What is the cost of 3 pounds of chicken? What is the cost of 3 poun
    9·2 answers
  • Students into classrooms participated in an art show to celebrate different cultures. The two way table below shows the types of
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!