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o-na [289]
3 years ago
10

Select the expression that is equivalent to (x+4)^2

Mathematics
2 answers:
AVprozaik [17]3 years ago
8 0

Answer:

So for this problem, we can use the formular:

(A + B)² = A² + 2AB + B²

Our orginal expression is: (x + 4)². In this expression, A can be written as x, B represents for 4, that leads to our answer:

(x + 4)² = x² + 2 . 4x + 4² = x² + 8x + 16

The correct answer will be D

Arte-miy333 [17]3 years ago
5 0

Answer:  the correct option is (D) x^2+8x+16.

Step-by-step explanation:  We are given to select the expression that is equivalent to the following expression :

E=(x+4)^2~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)

We will be using the following formula :

(a+b)^2=a^2+2ab+b^2.

Using the above formula, the expression (i) gives

E\\\\=(x+4)^2\\\\=x^2+2\times x\times4+4^2\\\\=x^2+8x+16.

Thus, the required equivalent expression is x^2+8x+16.

Option (D) is CORRECT.

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aleksandr82 [10.1K]

Answer:

500 flags each

Step-by-step explanation:

If 40 schools receive 250 each, then in total, that's 10,000

25,000 - 10,000 = 15,000.   There are 30 schools remaining, so we divide.  15,000 / 30 = 500, so...

40 schools get 250 flags each, and the other 30 schools get 500 flags each.

5 0
4 years ago
What is the area of the toy bicycle wheel if the radius is 1 inch ?
dolphi86 [110]
Answer:
_________________________________________________________
1)  The area, in terms of "π" , is:  " <span>1π  in.² "  .
</span>__________________________________________________________
2)  The area, using the approximation of  "3.14"  for "π" , is:  " 3.14 in.²  " .
__________________________________________________________ 
Explanation:
__________________________________________________________
The formula/equation of the area of a circle, "A":
_______________________________________
A = π * r² ;
 
 in which π ≈ 3.14 ; 
               A = Area; 
               r = length of radius = 1 in. (given). 
______________________________________

  To find the area, take our known values, and plug them into the formula to find our answer:
_____________________________________
1)  To solve for the Area, in terms of "π" ;
_________________________________________
   
   A = π * r²  = π *(1 in.) ² = π * 1 in² ;
 
   A = 1π  in.²  .
____________________________________________________
2) To solve for Area, using the approximation of "3.14"  for "π"  :
___________________________________________________
   A = π * r² ;
 
   A ≈ (3.14) * (1 in.)²  =  (3.14) * (1²) * (in.²)  ;
      =  (3.14)*(1)*(in.²)  ;
_____________________________________________________
   A ≈  3.14 in.²
_____________________________________________________

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Answer:

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hope it is helpful to you

4 0
3 years ago
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