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frozen [14]
3 years ago
7

Find the area of a triangle with sides a = 5 b = 8 and c = 11

Mathematics
2 answers:
Ann [662]3 years ago
5 0
That would be a Area of 18.33
galben [10]3 years ago
4 0
The area would be 18.33
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10 lbs ≈
sergejj [24]

Answer:

D. 4.5 kg

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
The product of two consecutive room numbers is 420. find the room numbers.
marissa [1.9K]
Hello : 
the  consecutive room numbers are : n , n+1
n(n+1) =420
n²+n -420 = 0 
the discriminant delta = b² - 4ac       ( a = 1  and b =  1  and   c = - 420
delta = (1)²-4(1)(-420) =1681= 41²
n = (-1 -41)/2    ( refused negatif number)
or 
n = (-1+41)/2 =20
<span> the room numbers.are : 20  , 21</span>
7 0
3 years ago
Read 2 more answers
Determine if x + 2 is a factor of p(x) = x ^4 + 3x^ 3 + 4x ^2 - 8 and explain why.
zlopas [31]
X^4+ 3x^3+4x^2-8 |   x+2   =  x^3+x^2+2x-4
 -x^4-2x^3
-----------------------     
         x^3+4x^2-8
         -x^3-2x^2
-------------------------
                 2x^2-8
                 -2x^2-4x
                --------------
                  -4x-8
                    4x+8
----------------------------
                      / /

is a factor because (x+2)(x^3+x^2+2x-4)=x^4+3x^3+4x^2-8
4 0
3 years ago
Read 2 more answers
Solve the equation. Then check your solution.
ra1l [238]

Answer:

I think so b is the option

7 0
3 years ago
Please help me fast and show all your work please thx ​
Kitty [74]

If the two diagonals are d and D, the are of the rhombus is

A=\dfrac{dD}{2}

So, in your case, the area is

A=\dfrac{15\cdot 35}{2}=262.5

The other options are wrong because:

  • option A doens't divide by 2, thus getting twice the area of the rhombus
  • option B summed the diagonals instead of multiplying them
  • option D took the difference of the diagonals.
8 0
3 years ago
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