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
nekit [7.7K]
3 years ago
6

Find the difference. (5x2 + 2x + 11) − (7 + 4x − 2x2)

Mathematics
2 answers:
belka [17]3 years ago
7 0

Answer:

7x^2-2x+4

Step-by-step explanation:

(5x^2+2x+11)-(7+4x-2x^2)

Breaking the parentheses using the law of signs for addition / subtraction:

5x^2+2x+11-7-4x+2x^2

Combining like terms:

(5x^2+2x^2)+(2x-4x)+(11-7)

add/subtract like terms:

7x^2-2x+4

k0ka [10]3 years ago
6 0
<span>(5x^2 + 2x + 11) − (7 + 4x − 2x^2)
= </span>5x^2 + 2x + 11 − 7 - 4x +  2x^2
= 7x^2 - 2x + 4
You might be interested in
Help me please!ASAP​
sertanlavr [38]

Where's is triangle M??

4 0
3 years ago
Find the determinant of the matrix.
Jobisdone [24]

Answer:

-276

Step-by-step explanation:

We'll use the method of cofactors.  Use the coefficient +6 for

9   2

8   10

This gives you one third of the solution:  6 {(9)·(10) - (8)(2) },  or 444.

Next, use the coefficient 9, taking care to change the sign to -9  as follows:

     9   1

-9 |           |     =   -9(90 - 8) = -9(82) = -738  

      8  10

Finally with +2 as y our coefficient, evaluate the cofactor

9  1

9  2

ending up with  

+2(18-9) = +2(9) = 18

Finally add these three results together:

+444 - 738 + 18  =  -276

This, the determinant, D, is -276 (the fourth answer choice)

5 0
3 years ago
In polynomial expressions when do you know to add or subtract?
Aliun [14]
Can you give an example?
7 0
3 years ago
Find the value of x, y and z in the rhombus below
Mice21 [21]

Answer:

... ................................

3 0
3 years ago
Write the trigonometric ratio for cos X as a fraction and as a decimal rounded to the nearest hundredth
Ganezh [65]

Answer: The correct choice is letter C.

Step-by-step explanation:

Cosine = adjacent/hypotenuse

In this triangle, you are looking for angle degree of cos X.

When finding an angle degree, you must use the inverse of whatever trig ratio you are using. In this case, you would use cos^{-1}.

The adjacent side from x is 12 and the hypotenuse is 15.

So you form your trig ratio which is your answer.

cos^{-1} \frac{12}{15} = 0.80

5 0
3 years ago
Other questions:
  • What would happen if someone sarhpled a basketball team to find the
    12·2 answers
  • 7y-3x= -5 solve for x
    14·1 answer
  • Which of the following points are more than 5 units from the point P(-2, -2)?
    5·1 answer
  • How do you find the greatest common factor of 175 and 25?
    9·1 answer
  • Help me plez and show work
    13·1 answer
  • (2x-1)(x+5)(3x-2) expanded and simplified
    13·1 answer
  • Please help me... refer to the image for what i need help with
    11·1 answer
  • Darko found the sum of 324 and 57 to be 894. What error did he make?
    8·1 answer
  • Here's a math question for y'all ;). Please help! How to know if a function is linear without graphing?
    6·1 answer
  • Help me please <br><br><br><br>I couldn't solve it​
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!