There is 1 boy for every 3 girls in a class. If there are 60 students in the class, how many are boys?
1 answer:
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Answer:
Option B, Area of pentagon = 58.5 Square feet
Step-by-step explanation:
The remaining part of the question is attached as image
Solution
Area of pentagon has a triangle and a trapezoid
Area of triangle = 0.5 *base *height = 0.5*9 *3 = 13.5 square feet
Area of trapezoid = Area of rectangle – 2* area of smaller triangles
= 9 ft * 6ft – ( 2 * 0.5 * 6 ft * (9 ft – 6ft) /2
= 54 – (1*6*1.5)
Area of pentagon = 13.5 + 45 = 58.5 Square feet
Hence, option B is correct
Answer: D.-6 and F.3
Step-by-step explanation:
The given rational number :
To find : The value of x , where the rational expression becomes equal zero.
Let's check all the options :
A. 7
At x= 7 ,
B. -7
At x= 7 ,
C. 6
At x= 6 ,
D. -6
At x= -6 ,
E. -3
At x= -3 ,
F. 3
At x= 3 ,
Thus, at x= -6 and 3 , the rational expression equals to zero .
So , the correct options are : D.-6 and F.3