15, because 3 goes into 9, 3 times and, 4 goes into 12, 3 times therefore x has to follow this rule because these 2 triangles are similar and because it already gives you 5 just take 5*3=15 there is your answer enjoy!=)
        
                    
             
        
        
        
Answer:
96 ft²
Step-by-step explanation:
The general formula for the surface area of a pyramid is:  
SA =  pl + B, were p = the perimeter of the base, l = the slant height and B = the area of the base
pl + B, were p = the perimeter of the base, l = the slant height and B = the area of the base
Since the area of the base is 36 ft², then each side is √36, or 6 ft. The perimeter is the sum of all the sides, so 6 x 4 = 24 ft. 
Given the overall height of the pyramid is 4 feet, you can use the Pythagorean Theorem (a² + b² = c²) to find the slant height (hypotenuse) of the pyramid.  Using 3 feet for 'a' and 4 feet for 'b': 
3² + 4² = c² or 9 + 16 = 25 
25 = c² or c = 5
SA =   (24)(5) + 36
(24)(5) + 36
SA = 60 + 36 = 96 ft²
 
        
             
        
        
        
Answer:
10 centimeters.
Step-by-step explanation:
First, we need to remember what's the formula to get the volume of a rectangular solid and a cube.
The volume of the first equals:
Volume = Length x Width x Height
While the volume of the cube is:
 where a is the edge.
 where a is the edge. 
We are given the measures of the rectangular solid so we can calculate its volume:
 cubic cms.
 cubic cms.
Now, we know that  both the volume of the rectangular solid and the cube are the same so we will use this information to calculate the edge of the cube. 
![1000=a^3 \\\sqrt[3]{1000} =\sqrt[3]{a^3} \\10=a](https://tex.z-dn.net/?f=1000%3Da%5E3%20%5C%5C%5Csqrt%5B3%5D%7B1000%7D%20%3D%5Csqrt%5B3%5D%7Ba%5E3%7D%20%5C%5C10%3Da)
Thus the length of an edge of the cube is 10 centimeters 
 
        
             
        
        
        
The answer is 2^(9/10). I did it assuming with the ^5 you mean the 5th root of 4
 
        
                    
             
        
        
        
Answer: The value of the card after you buy your 8th coffee will be $61.3
Step-by-step explanation:
The worth of the gift card for the coffee shop is $90. Each day you use the card to get a coffee for $4.10. This means that the worth of the gift card is reducing by $4.10 each day. This rate is in arithmetic progression. 
The formula for the nth term of an arithmetic sequence, Tn is expressed as 
Tn = a + (n-1)d
Where a is the first term
d is the common difference
n is the number of days 
From the information given,
a = $90
d = - $4.1
The explicit formula representing the amount of money available will be
Tn = 90 - 4.1(n - 1)
The value of the card after you buy your 8th coffee will be
T8 = 90 - 4.1(8 - 1) = T8 = 90 - 4.1×7
T8 = 90 - 28.7
T8 = $61.3