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irinina [24]
3 years ago
13

Factor completely 9ab + 12ax − 6b − 8x.

Mathematics
1 answer:
Len [333]3 years ago
5 0
Okay so you split 9ab + 12ax - 6b - 8x 
<span>             into two 2-term polynomials </span>
              + 12ax + 9ab   and     - 6b - 8x
             doesn't look that good to me so lest try other one : 
             9ab + 12ax   and     - 6b - 8x
              looks good for now 

<span>      </span>      Pull out from each binomial separately
             9ab + 12ax   =   3a • (3b + 4x)
              - 6b - 8x   =    - 2 • (3b + 4x)

<span>     </span>      Add up to arrive at the desired factorization so now you have
            <span> (3a - 2) • (3b + 4x)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Hope that Helped!</span>
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Answer:

Step-by-step explanation:

If the mean is 110, and the standard devaition is 22,

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3 years ago
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borishaifa [10]
If I read the question correctly, the information about the 80x80 fencing and the grass region are all irrelevant information. 

In order to find the area of the side walk we are going to use the formula A=pi(r^2) where r = the radius. The diameter of the pool is 60 feet and the the sidewalk is 5 feet bigger all around meaning we had 5 feet to both sides of this 60 feet giving you an overall diameter of 70 feet (or 60 + 5*2). To find the radius take half of the diameter. 70/2 = 35. 

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The sidewalk is not a full circle, just a border so we now have to find the area of the actual pool and subtract it from this 1225pi for the sidewalk's area. Same formula, Area = pi(r^2). The diameter of the pool is 60 meaning the radius is 30 (or 60/2). Plug into the equation, pi(30^2) = 900pi.

Now do 1225pi - 900pi to get 325pi. Break out your calculator and hit the approximation button. 325pi is approximately 1021.018 if rounded to 3 decimal places.

The area of the 5-foot wide sidewalk encircling the pool is approximately 1021.018 square feet. 


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3 years ago
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7 0
3 years ago
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