Answer:
Step-by-step explanation:
The expression equivalent to

Hope it helps :)
 
        
             
        
        
        
Answer:
Step-by-step explanation:
this is a simultaneous equation question
f(1)=8  so  a(1) + b = 8
f(4)=17 so a(4) + b = 17
can you figure this out from here ???
if you can't below is how to solve it
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a + b = 8
4a+b=17
multiply the top equation by 4 and then subtract the bottom one from the top
4a+4b = 32
-(4a +b = 17)
3b = 15
b=5
now plug 5 into the first equation
a + 5 = 8
a=3
there you go :)
 
 
        
             
        
        
        
Answer:
$18 per square foot.
Step-by-step explanation:
First there are 3 feet in a yard. So if she purchased 5 square yards there would be 3 times as many square feet soo.
5*3= 15 
So there were 15 square feet in the 5 square yards.
Now just divide 270/15 = 18
$18 per square foot.
Hope this helpsss! 
 
        
             
        
        
        
Area of circle = πd²/4,    where d = diameter
 
                      = π*6*6/4 = 9π ≈ 9 *3.1416 ≈ 28.2744 cm²
Area ≈ 28.27 cm²
Hope this explains it.
        
                    
             
        
        
        
Question 1:We have a 45-45-90 right triangle with the hypotenuse being the length from one corner to the opposite corner.
Multiply 30 ft with the square root of 2 and use a calculator to help give you numerical value to get your answer.

Your answer is the second choice.
Question 2:The equilateral triangle can be divided into 2 30-60-90 triangles with the longer leg being the altitude. To get half of the side length of the right triangle, divide the altitude by the square root of 3.

The full side length is double of that, which is 

.
Multiply that by 3 to get the full perimeter.

Your answer is the third choice. Hope this helps! :)