Answer:
90 cubic inches
Step-by-step explanation:
 
        
             
        
        
        
Answer:
x = 15.3°
Step-by-step explanation:
Trig identities:

where 
- x = angle
- O = side opposite the angle
- A = side adjacent the angle
- H = hypotenuse

 
        
             
        
        
        
Answer:  14x^2 - 84x - 7
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Explanation:
The like terms 6x^2 and 8x^2 combine to 14x^2
The like terms -8x and -76x combine to -84x
Nothing pairs with the -7, so its stays as is.
Standard form is where we list the terms in decreasing exponent order. We can think of -84x as -84x^1 and the -7 as -7x^0. So 14x^2 - 84x - 7 would be the same as 14x^2 - 84x^1 - 7x^0. The exponents count down: 2,1,0.
The final answer is a trinomial since it has three terms. It is also a quadratic because the degree (highest exponent) is 2.
 
        
             
        
        
        
Answer:
    Angle at x is 75°
Step-by-step explanation:
Data :
   Angle at A = 65°
   Angle at B = 40°
According to  the porperty of triangle we know that total interior angle a triangle has is 180° irrespect of type or size
               A + B + C = 180
       65 + 40 + C = 180
         C = 180 - 65 - 40 = 75°
Mark brainliest if you understand
 
        
                    
             
        
        
        

let's factorise : 
now, there are two cases :
case 1 :
case 2 :