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
aliina [53]
2 years ago
11

Please Help Me!!!! qwq

Mathematics
1 answer:
Semmy [17]2 years ago
6 0

Answer:

We add 25 and subtract 25 to complete the square.

(x+5)^{2}-38=0\\ is the equation we get.

Step-by-step explanation:

x^{2} +10x-13=0\\x^{2} +10x+25-13-25=0\\(x+5)^{2}-38=0\\

So, we're adding 25-25 to complete the square.

You might be interested in
I only need help with the third one​
Paladinen [302]

Answer:

240

Step-by-step explanation:

12/100 X 2000

=240

the answer is 240

5 0
3 years ago
Read 2 more answers
When we’re writing, we can use a thesaurus to find a different word with the same meaning to present an idea. How can we find di
Pavlova-9 [17]

Answer:

Math has the particularity that it is a logical construction.

This means that we can start with an expression X (where X is an equation, not a variable)

Now we can apply a lot of "math" to this equation in such a way that we can rewrite it, but the actual "meaning" of the equation will not change.

An example of this is factoring.

For example, we can write a quadratic equation as:

a*x^2 + b*x + c.

And we also can write this as:

n*(x - k)*(x - j)

where k and j are the solutions of the equation:

a*x^2 + b*x + c  = 0.

What is the advantage of writing the equation in each form?

Well, both expressions actually represent the same thing, but the explicit information in each expression is different, so depending on what we want to do, we will choose one option or the other.

And we have lot's of different ways to express something, where we can find some ones really complex and useful, like the series of Taylor, where we can write a function as a summation of infinite terms.

8 0
3 years ago
Write expression as a sine or cosine of an angle.<br>cos 94° cos 18° + sin 94° sin 18° ​
MArishka [77]
<h3>Answer:  cos(76)</h3>

=========================================================

Explanation:

The original expression is of the pattern cos cos + sin sin. This pattern matches the second identity in the hint. Specifically, we'll say the following:

cos(A - B) = cos(A)cos(B) + sin(A)sin(B)

cos(A)cos(B) + sin(A)sin(B) = cos(A - B)

cos(94)cos(18) + sin(94)sin(18) = cos(94 - 18)

cos(94)cos(18) + sin(94)sin(18) = cos(76)

----------

We can verify this by use of a calculator. Make sure your calculator is in degree mode.

  • cos(94)cos(18) + sin(94)sin(18) = 0.24192
  • cos(76) = 0.24192

Both expressions give the same decimal approximation, so this helps confirm the two expressions are equal. You could also use the idea that if x = y, then x-y = 0. Through this method, you'll subtract the left and right hand sides and you should get (very close to) zero.

6 0
2 years ago
What two angles equal to a complementary angle?
butalik [34]

Answer:

go google and search

Step-by-step explanation:

--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

5 0
3 years ago
Which two words can describe the same shape​
belka [17]

Answer:

square, anddddddddddddddddd deskkkkkk I thinkjkkkkk

8 0
2 years ago
Other questions:
  • 1. Eric has $115 to spend on back to school clothes. So far, he has spent $90. Write an inequality to show how much more money E
    5·1 answer
  • What is the slope of the line ?
    5·1 answer
  • What is the equation of the line that passes through the point (-2,2) and (0,5)? A. Y=-3/2x+5 B.Y=x-5 C.Y=3/2x+5 D. Y=x+5
    13·1 answer
  • Solve the equation 4/9y=8/3
    11·1 answer
  • Five years ago, Alan was thrice as old as Aron. After ten years, Alan will be twice as old as Aron. How old are Alan and Aron?
    12·1 answer
  • Hugh bought some magazines that cost $3.95 each and some books that cost $8.95 each. He spent a total of $47.65 let him represen
    14·1 answer
  • HELP PLZ GUYS I BEG YOU 15 PTS ITS EASYYYYYYY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    12·1 answer
  • 4(x+5)-10-=54<br> I need helpp
    10·2 answers
  • If Katie dives at -40 feet per minute, how long will it take to reach -110 feet?
    12·2 answers
  • FIRST -CORRECT- ANSWER WILL GET BRAINLIEST!!
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!