Answer= 22
Explanation
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2l+2w=p
2(8)+2(3)= 22
Let X be the width of the path.
The width of the path would be the width of the pool plus 2x, so 2x +16
The length of the path would be the length of the pool plus 2x, so 2x+22
The total area is 832 square feet.
Area is found by multiplying the length by the width.
So you have:
(2x+16) (2x+22) = 832
Use the Foil Method:
(2x+16) (2x+22) = 4x^2 +76x+352
Now you have:
4x^2 +76x+352 = 832
Subtract 832 from both sides:
4x^2 +76x+352-832 = 0
Simplify:
4x^2 +76x -480
Factor the left side:
4(x-5)(x+24) = 0
Divide both sides by 4:
(x-5)(x+24) = 0
Set both parenthesis to equal 0 and solve for x:
x=5 and x = -24
The width of the path cannot be a negative number, so the width is 5 meters.
Answer:
n has to be negative
Step-by-step explanation:
To solve this equation, 15 has to be subtracted from 2 which is negative
Since n is positive then the overall result will be negative
The reason that this is possible is because Marty's pizza is larger. For example you could compare a fun size candy bar to a full size. 5/6 of a fun size candy bar is still less than 4/6 of a full size. Hope thats helpful!
Answer:
D. It is the method that is most likely to give a true representative sample.
Step-by-step explanation:
The advantage of selecting a random sample is that is without bias, so being a true representative sample.
For example, if you want to estimate the proportion of the population of a certain city that is going to vote for a candidate in the elections, you must select at a place where different people passes, not one uniform place like a school, just a simple example.
So the correct answer is:
D. It is the method that is most likely to give a true representative sample.
