Answer:
The correct answer is B.
Step-by-step explanation:
In order to find this, calculate out the discriminant for each of the following equations. If the discriminant is a perfect square, then it can be factored.
Discriminant = b^2 - 4ac
The only of the equations that does not yield a perfect square is B. The work for it is done below for you.
Discriminant = b^2 - 4ac
Discriminant = 7^2 - 4(2)(-5)
Discriminant = 49 + 40
Discriminant = 89
Since 89 is not a perfect square, we cannot factor this.
can see the answer its blurry
The whole part will be the 4. The fraction part will be the decimal. That converts to the fraction 25/40. Therefore, 4.625 as a mixed number is 4 and 25/40.
Aday=24 hours
58days=24 times 58=1392 hours
60min=1hr
30min=1/2hr=0.5hr
total is
1392+15+0.5=
1407.5hours
Answer:
Length is 24 feet and width is 9 feet.
Step-by-step explanation:
It is given that length of a rectangular wall is 6 feet longer than twice its width.
Let x feet be the width of wall.
Length = 2x+6 feet
Area of rectangle is
It is given that area of a rectangular wall of a barn is 216 square feet.
Splitting the middle term, we get
Width can not be negative. So width is 9 feet.
Length
Therefore, length is 24 feet and width is 9 feet.