Answer:
45 square inches
Step-by-step explanation:
Akira receives the prize at the science fair for having the most informative project her trophy is in the shape of a square pyramid and is covered in shiny gold foil how much gold foil did it take to cover the trophy including the bottom
Total surface  =  surface area of the base square + area of 4 triangles
Calculate the surface area of the base square
 surface area of the square =  s^2
where s= side length
s=3 in
The surface area of the base  =s^2 
=3^2 
= 9 square inches
The surface area of the side triangles
The area of the triangle = (1/2)* side length* slant height
Side length=3 in
Slant height=6 in
substituting the values,
The area of the triangle =1/2*3*6
= 18/2
= 9 square inches
There are 4 triangles
The area of 4 triangles  =  4 x 9  
= 36 square inches
Therefore,
Total surface  =  surface area of the base square + area of 4 triangles
 =  9 + 36
 = 45 square inches
 
        
             
        
        
        
Answer:
7 
Step-by-step explanation:
f(X)= 7-2x 
f(3) means u have to put the value of 3 in the given equation so it will be 
= 7-2×3 
= 7-6 
= 1 
and now you have to add 6 to it so it will be 7. 
 
        
             
        
        
        
Answer:
-212800
Step-by-step explanation:
7.2 × 10³ = 7.2 × 1000 = 7200
2.2 × 10 to the power 5 = 2.2 × 100000 = 220000
7200 - 220000 = -212800
 
        
                    
             
        
        
        
The <em>echo</em> number 20222022202220222022 is the <em>perfect</em> square of 4496890281.
<h3>What echo number is a perfect square</h3>
An <em>echo</em> number has a <em>perfect</em> square if its square root is also a <em>natural</em> number. After some iterations we found that <em>echo</em> number 20222022202220222022 is a <em>perfect</em> square:

The <em>echo</em> number 20222022202220222022 is the <em>perfect</em> square of 4496890281. 
To learn more on natural numbers, we kindly invite to check this verified question: brainly.com/question/17429689
 
        
             
        
        
        
Answer:
Tooth A 
Step-by-step explanation:
Since the larger tooth has to be displayed, knowing that no matter how many zeros you add to the end of a decimal, the value of it will stay the same. 0.23 is 1 digit short that 0.195, so if you just add a 0 to 0.23, it make both of them have a digit in the thousandths place. Now it's easier to solve, 0.230>0.195.
Tooth A should be displayed.