You scored 48 out of 51 on your recent quiz. What percent did you get correct?
2 answers:
Answer: 94.11%
Step-by-step explanation:
1. You must keep on mind the information given in the problem. You know that the scored 48 out of 51 on your recent quiz.
2. Therefore, to calculate the percent you got correct, you must divide 48 points by 51 points and multiply by 100, as you can see below:
3. Let's call the percent you got correct. Then, you obtain the following result:
%
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Answer:
The length of the rectangle is 6 feet
Step-by-step explanation:
Given as :
The length of rectangle is 1 feet less than twice the width
So, let The width of rectangle = w feet
The length of rectangle = ( 2 w - 1 ) feet
The area of the rectangle = 21 feet²
Now,
∵ The area of the rectangle = length × width
Or, 21 feet² = ( 2 w - 1 ) feet × w feet
or, 21 = 2 w² - w
or, 2 w² - w - 21 = 0
or, 2 w² + 6 w - 7 w - 21 = 0
or , 2 w ( w + 3 ) - 7 ( w + 3 ) = 0
or, ( w + 3 ) ( 2 w - 7 ) = 0
So, w = - 3 feet , feet
here we consider only positive value of w i.e feet
∴ The length of rectangle = ( 2 w - 1 ) feet
or, The length of rectangle = 2 × - 1
Or, The length of rectangle = 7 - 1 = 6 feet
Hence The length of the rectangle is 6 feet , Answer