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
emmasim [6.3K]
3 years ago
6

Why do you need to change the signs in -x^2+6x+m=0 ?

Mathematics
1 answer:
Goshia [24]3 years ago
3 0

Answer:

It isn't necessary but having a positive coefficient for x^2 makes things like completing the square and factoring easier.

You might be interested in
What is the conjugate of 1 + √5
RUDIKE [14]

Answer:

Exact Form:

1 + √5

ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ

8 0
3 years ago
Please help me <br><br>If 180°&lt;α&lt;270°, cos⁡ α=−8/17, what is sin -α?
rewona [7]

Starting from the fundamental trigonometric equation, we have

\cos^2(\alpha)+\sin^2(\alpha)=1 \iff \sin(\alpha)=\pm\sqrt{1-\cos^2(\alpha)}

Since 180, we know that the angle lies in the third quadrant, where both sine and cosine are negative. So, in this specific case, we have

\sin(\alpha)=-\sqrt{1-\cos^2(\alpha)}

Plugging the numbers, we have

\sin(\alpha)=-\sqrt{1-\dfrac{64}{289}}=-\sqrt{\dfrac{225}{289}}=-\dfrac{15}{17}

Now, just recall that

\sin(-\alpha)=-\sin(\alpha)

to deduce

\sin(-\alpha)=-\sin(\alpha)=-\left(-\dfrac{15}{17}\right)=\dfrac{15}{17}

6 0
3 years ago
Read 2 more answers
Pleaseeee i need help asap
Gekata [30.6K]
That's just too bad. I don't the answer. I'm just doing this to get points. Good luck.
5 0
3 years ago
What is the order of rotational symmetry of a kite?<br> A) 0 <br> B) 1 <br> C) 2 <br> D) 4
KIM [24]
The order of rotational symmetry of a kite is 1
5 0
3 years ago
What is this Find the value of |-6| - 3(42 - 1).
Artist 52 [7]

Answer:

-117

Step-by-step explanation:

So, basically all you have to do is use the absolute values in order to use order of operations and simplify it along with the multiplied grouping.

Hope this helps :)

5 0
3 years ago
Other questions:
  • -5=n/2 I need help because I'm just a dumb kid
    15·2 answers
  • A Fair coin is tossed and a marble is chosen from the bag whose contents are shown below. what is the probability of the coin La
    9·2 answers
  • An athlete jumps these 4 distances in a log jump competition. witch jump dose NOT round to 4.7 meters A:4.746 meters B:4.680 met
    5·1 answer
  • You invest $2,000 in an account that has an annual interest rate of 3.2%, compounded annually. How much money will be in the acc
    6·1 answer
  • What is the GCF of g^3 an g^15
    5·1 answer
  • Please explain how to do this question ;^;
    9·1 answer
  • write the word sentence as an inequality a number b multiplied by -5 is at most -3/4 the inequality is ?
    12·2 answers
  • Are the following polygons similar ? Explain
    14·2 answers
  • A drawing of a sailboat was made useing a restangle and two right triangles, as shown. what is the area of the drawing f the sai
    13·2 answers
  • Approximately 3 x 10° people live in the USA.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!