Ezra has a square brick patio. He wants to reduce the width by 4 feet and increase the length by 4 feet.
2 answers:
The complete question in the attached figure
Let
x-------> represent the length side of the original square patio
we know that
Area of the original square patio=x²
x=9 ft
Area=9*9---------> 81 ft²
if Ezra <span>reduce the width by 4 feet and increase the length by 4 feet
</span>then
the new dimensions are
(x+4) ft x (x-4) ft
Area of the new patio=(x+4)*(x-4)----> (9+4)*(9-4)----> 13*5---> 65 ft²
therefore
the answer is the option
<span>A. lw = (x + 4)(x – 4); 65 square feet</span>
Let
x-------> represent the length side of the original square patio
we know that
Area of the original square patio=x²
x=9 ft
Area=9*9---------> 81 ft²
if Ezra <span>reduce the width by 4 feet and increase the length by 4 feet
</span>then
the new dimensions are
(x+4) ft x (x-4) ft
Area of the new patio=(x+4)*(x-4)----> (9+4)*(9-4)----> 13*5---> 65 ft²
therefore
the answer is the option
<span>A. lw = (x + 4)(x – 4); 65 square feet</span>
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Answer: 0.2643
Step-by-step explanation:
Given : The proportion of adults are unemployed : p=0.077
The sample size = 300
By suing normal approximation to the binomial , we have
Now, using formula , the z-value corresponding to 26 will be :-
Using standard distribution table for z , we have
P-value=
Hence, the probability that at least 26 in the sample are unemployed =0.2643