Answer: 1.5
Step-by-step explanation:Let the standard deviation of the shoe size be represented by ' ' and the mean shoe size be represented by ' = 7.5'. Also, the sizes of the shoe be represented by ' '. So, . Hence, the standard deviation of the shoe size data for the math class is 1.5.
Answer:B
Step-by-step explanation:
2/7(x−2)=4x
2/7x+−4/7=4x
2/7x+−4/7
−4x=4x−4x
−26/7x+−4/7=0
−26/7x+−4/7+4/7=0+4/7−26/7x=4/7
(7−26)*(−26/7x)=(7/−26)*(4/7)
x=−2/13
Answer:
Step-by-step explanation:
5x-1=49
5x=50
X=50/5
X=10
2x+5=1
2x=-4
X= -4/2=-2
1-x=10
-x=10+1
X= -11
9x - 3 = 15
9x =12
X =12 /9
X=4/3=1.33
9-6x= 17
-6x= 8
X=8/-6
X=-1.33
It would be 100,000 or if the number is just 981 then it would be 1,000.
Answer:
perimeter = 8x+12
Step-by-step explanation:
perimeter of a rectangle = 2(Length + width)
= 2[(3x+5)+(x+1)]
=2( 3x+5+x+1)
=2(4x+6)
perimeter= 8x+12