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darius12318
18.07.2019 •
Mathematics
The length of a classroom is 4 feet longer that’ll it’s width. write a polynomial to express the area of classroom. then calculate the area if the width is 22 feet.
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Ответ:
Expression for the area of the classroom → (w² + 4w) square feet
Area of the classroom having width 22 feet → 573 feet
Algebraic equations for the statements,Choose the variable first.Then use the statement to convert the statement into equation.Let the length of the classroom = l feet
And width of the classroom = w feet
Statement given in the question is,
"Length of a classroom is 4 feet longer than its width"
Algebraic expression for the given statement by using variables 'l' and 'w' will be,
l = w + 4
Since, area of a rectangle is given by the expression,
Area = Length × width
Area of the classroom will be,
Area = l × w
= (w + 4) × w [Since, l = (w + 4)]
= w² + 4w
If the width is 22 feet, area of the classroom will be,
Area = w² + 4w
= (22)² + 4(22) [By substitution method]
= 572 square feet
Therefore, expression for the area of the classroom will be (w² + 4w) square feet and for the width measuring 22 feet, area of the classroom will be 573 feet².
Learn more about the Algebraic equations for the statements here,
link
Ответ:
Polynomial: A = x(x+4)
A = 572 ft^2
Step-by-step explanation:
The polynomial is just x, the width, multiplied by x+4, the length.
The area is just A = 22(22+4). This equals 572 ft^2
Ответ:
7/8
Step-by-step explanation:
Odds against are the ratio between losses and wins.
odds against = L / W
Probability of winning is the ratio between wins and all games.
probability = W / games
probability = W / (W + L)
The odds against are 1 to 7.
1/7 = L / W
W = 7 L
The probability is therefore:
P = (7 L) / (7 L + L)
P = 7/8