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Mazyrski [523]
3 years ago
11

2(x+3)+ 5x = 3(2x-1)

Mathematics
2 answers:
steposvetlana [31]3 years ago
7 0

Answer: -9

Step-by-step explanation:

zubka84 [21]3 years ago
4 0

Answer:

Step-by-step explanation:

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Find the volume of the composite figure. Round to the nearest tenth. The base of each pyramid is a square with a side length of
nataly862011 [7]

Answer:

75 cubic inches

Step-by-step explanation:

Given:

The base of each pyramid is a square with a side length of 5 inches

Height of of pyramid is 9 inches.

To find: volume of the pyramid

Solution:

As the base of each pyramid is a square with a side length of 5 inches,

length of the pyramid (l) = base of the pyramid (b) = 5 inches

Height of of pyramid (h) = 9 inches

Volume of the pyramid (V)=\frac{lbh}{3}

On putting values of l, b and h, we get

V=\frac{5\times 5\times 9}{3}=75 cubic inches

5 0
3 years ago
Which addition does the model below represent?<br> 08+(-3)<br> 2+(-3)<br> 5+3<br> 5+(-3)
Elden [556K]
The answer 2+(-3) well I just need to add more so don’t pay attention to this
7 0
4 years ago
Solve for a.
tamaranim1 [39]
The correct answer is:  [C]:  " a =  ± \sqrt{25 - b^2}  " .
<span>___________________________________________________________
Explanation:
_________________________________________________________
We are given:  
_________________________________________________________
    </span>→   "  25  =  a²  +  b²  "  ;   Solve for "a" ; 
_________________________________________________________

    →  To solve for "a" ;  we want to isolate "a" on one side of the equation.
_________________________________________________________
We can rewrite:  "  25  =  a²  +  b²  "  ;

as:  " a²  +  b²  = 25 " .

_________________________________________________________
Then, we can subtract " b² "  from each side of the equation; as follows:
_________________________________________________________

   →
 " a²  +  b²  −  b²  =  25 − b²  "  ;

to get:
_________________________________________________________
   →  " a²  =  25 − b²  "  ;
_________________________________________________________
  →  Now,  take the square root of EACH SIDE of the equation ; 
to isolate "a" on one side of the equation; & to solve for the value(s) of "a" ; 
_________________________________________________________

  →  √(a²)  = \sqrt{25 - b^2}  ;

to get:
_____________________________________________________
  →    a   =  | \sqrt{25 - b^2} |  ;

  →    a   =  ±  \sqrt{25 - b^2}  ; 
  
  →  which is:  Answer choice:  [C]:  " a =  ±  \sqrt{25 - b^2}  " .
______________________________________________________
8 0
3 years ago
Consider the quadratic ax^2 + bx + c =0, where a,b, and c are rational numbers and the quadratic has two distinct zeroes. If one
Allisa [31]
what makes it irrational is the
\sqrt{ {b}^{2} - ac }  \:
which does not change from one zero to the other. so if one root its irrational the other one also is. Answer A
8 0
3 years ago
Round to the nearest tenth 20.3
creativ13 [48]
The answer is 20 because 3 is closer t 1 than 10
8 0
4 years ago
Read 2 more answers
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